It's time! Forshizzle!

Well guy's it is time Forshizzle!

I was talking with my friend Tristen last night about the future of his 2nd gen. RX-7. He proceeded to tell me his engine is ready to be installed, and it is at his house. I was quite supprised, and asked him, "are you going to put a 350 in?!" He says, "yeah! My 350!" I thought then asked, "what 350?" He then told me the tale of his 350 build up over the past 2 1/2 years. "Well," I said, "what is the output on the beast?" He looks at me with the wickedest of wicked grins:devil:, says, "dynoed 537 @ the crank..." ME>:eek2: He then proceeded to say, "Yeah, but I did build it up for thee 300 shot of the N2O though." ME>:bloated: I coughed a couple times then wet myself. Then I got to thinking???:confused: I asked "Do you still have that old 1st gen. X7?" "Yes!" he said, "It's in Daytona." He proceeded to fill me in and he said he would sell it to me for $300!!! :eek: "CLick!" was the first thing out of my mouth!

Well here is the point I am @! I will purchase the $300 1st gen. RX-7. Then proceed to put in either 383 stroker, or a 5.0 fuel injected mustang engine!...CLick! What are you guys opinion on the idea. Comments? Questions? Answers!?!:cool:

SCARY:eek: stuff
is it gonna be an all out drag car or a street sleeper

It won't be drivable without slicks, so I'm thinking he is just going to race it on the track. With this kid you never know though?!

Go for it:D

dynoed 537 @ the crank
Obehey baby:sun:

go 383!... then swap on a TPI fuel injection system off a 80's Camaro.. best of both worlds!! :D


sounds like a good plan!

Go for a cobra 5.0 and mod the heck out of it.

Originally posted by DemonZX
Well guy's it is time Forshizzle!

I was talking with my friend Tristen last night about the future of his 2nd gen. RX-7. He proceeded to tell me his engine is ready to be installed, and it is at his house. I was quite supprised, and asked him, "are you going to put a 350 in?!" He says, "yeah! My 350!" I thought then asked, "what 350?" He then told me the tale of his 350 build up over the past 2 1/2 years. "Well," I said, "what is the output on the beast?" He looks at me with the wickedest of wicked grins:devil:, says, "dynoed 537 @ the crank..." ME>:eek2: He then proceeded to say, "Yeah, but I did build it up for thee 300 shot of the N2O though." ME>:bloated: I coughed a couple times then wet myself. Then I got to thinking???:confused: I asked "Do you still have that old 1st gen. X7?" "Yes!" he said, "It's in Daytona." He proceeded to fill me in and he said he would sell it to me for $300!!! :eek: "CLick!" was the first thing out of my mouth!

Well here is the point I am @! I will purchase the $300 1st gen. RX-7. Then proceed to put in either 383 stroker, or a 5.0 fuel injected mustang engine!...CLick! What are you guys opinion on the idea. Comments? Questions? Answers!?!:cool:

You're talking about Cbass' wet dream:D.

I vote for a TT 5.0:D

The Porsche/RX7 Nazi has arrived... <marches about, salutes>

There are two engines for the first gen RX7, the 12A and the 13B. The 13B models are much harder to find, so it's likely we're talking about a 12A powered car.

The RX7 and the Fox body Mustang were both developed by the same team in the late 70s, and there are many similarities. It just so happens the 5.0 HO engine is a bolt in conversion on the 12A cars. Everything will fit from the factory, the oil pan will clear the crossmember, the headers will clear the fenders, and the tranny will fit very nicely.

If you're not picky about which engine you're going with, go with the 5.0 Ford, as it's the easiest to put in.

If it's a 13B car, then a SBC would be just as much work as a Ford engine, and cheaper to build. These guys will answer all your questions.

http://www.torquecentral.com/index.php?s=

350 definitely gets my vote. But uhhh...If you're going all out...And planning to do a rebuild ANYWAYS...Why go 383? How about 396? Or better yet 401(like was in my old Z28)? Or if you're really crazy, why not 409? If you're talking Chevy V8s, bigger IS better! heheh! But yea, I'd say go with the Chevy, definitely. If you do are you planning to run nitrous on it?

well....a 5.0 in a 1st gen if its a direct bolt in sounds good to me, cheep, easy *in comparison to banging out the areas for a larger engine* and cbass will be wet for you forever :bloated:

That is why I am leaning towards the 5.0. You can't beat a bolt in! Though I do like the chevy engines. I have a gang of friends that have shops, and/or work at race garages, so having the engine put in would not be a problem. If I do go Chevy it will be the 383. Either way it is going to be fast as all hell!...CLick! I know a friend of a friend that will build me a great 400+hp engine for about $1500 or so. I was just wondering what the prices on some blocks would be.?! Self I would love to do a 396 or 409, but then comes in the factor of getting them in the car! So I ??? Well I will go over to my bud's house and get some pics of his gen 2 for you guy's! It will be a nice little treat...And Cbass, when the piccs get up....keep your hands on the keyboard!:D

The engines I mentioned are bored/stroked 350s:)
383, 396, 401, 409...All from a 350:)
As for engines...Are you just looking for the shortblock? Or do you want a complete(heads/cam and all)? If you just want the shortblock, definitely check out the http://www.camaroz28.com message board classified section. Can find them on there all the time for really really cheap($300 sometimes!). It's a HUGE community over there, so if you post up what you're looking for you will get replies very very quickly. Always someone looking to sell. Also lots of complete's selling over there for really good prices too. I'll also look around a few different places where I can get some really good deals and see how much they could get you something for. If you ever do decide to go the Chevy(or Ford actually) route, I'm positive I can find you something for a really good price. So just let me know exactly what it is you're looking for:)

what ya doin with the 300zx?

My advice is to check out the Buy&Sell parts section for some good deals. My friend was looking through there last night, and found a built 5.0 for $500...

If it's a 12A car, go with the Ford, as it's the easiest, and even a bone stock 5.0 HO will do 225hp with dual exhaust, if not more. You can build a 350hp 5.0 for not too much, especially if you source the parts well. 350hp in a 2350lb car is a very good power/weight ratio :D

Find out what year and trim package it is, that can make a huge difference.

Thanks guys. I am keeping the Z for my daily driver. I figure I could put the same amount of my money into the X7 and have a hellova lot faster car, than I would with the Z. I will probably go with the 5.0, even though I really do like Chevy a lot more. But, who knows!:confused: :D

Ah, don't fall into the trap of brand loyalty :D

The 5.0 is perfect for this application, at least for a street car. There would be big advantages to the chebby if this was a strip only car, but easier is better, trust me ;)

Welcome to the fold...

:devil: :devil: :devil: :devil: :devil:

You know what my answer is man. I am all for this kind of crazy shit! :smoker2:

well
5.0 with some nice upgrades = very cheap easy and fast
350 chevy/ 383 mopar = near limitless power weeeee, hows the pocketbook?

what about a 440/6? think that would fit?

The best choice for a 1st generation V8 swap is the Ford 5.0 engine. It's capable of making every bit as much power as a Chevy engine, assumint the displacement is the same. It has a short deck height, and weighs about 410 lbs with all accessories attached(except the clutch).

The original 12A rotary weighs 355 lbs, so the weight gain is minimal, and can be easily offset by relocating the battery to the trunk. I'd say gaining around 80 lbs for 3.8 liters of displacement is a bargain :D

You can buy off the shelf forged shortblock components for the 5.0, and combined with the necessary fuel upgrades, will make for a great turbocharged engine. There is enough room in the engine bay too.

That was going to be my next question. Is there any single turbo upgrades? If not, a decent s/charger? The twin t upgrades put out awssome power, but are pricy. I wanted to keep this a cheep/powerful project car. Thanks fellas!...CLick!

It's a 5.0 Ford, anything that can be done to it has been done to it, and can be done to it cheaply :D

Hit a junkyard, get some T3s for buttons, have a turbo shop rebuild them with ball bearing centre sections. Same cost as a good new T4, and much better boost.

Combine that with a forged bottom end, and we're talking about 600hp on pump gas. That's the point where you have to go to an automatic transmission just to handle the power :D

CLick!

Oh yeah I almost forgot! If I will be running out like 500-600 hp, what is my best bet for the tranny. The car is so light it would be almost uncontrollable. What are your opinions? Suspension also...

Well, the stock T5 tranny isn't good for much more than stock torque, so I'd forget about that if you want 325+ lbft.

The T56 is always a good bet, you can get models that will take 650 lbft, from Tremec. That's the kind of power you'd be making with a turbocharged 347 stroker.

Of course, those are quite pricey. Your best bet is to go with an auto to start with, and maybe get a stronger manual when you can afford it.

OK. Now back on the subject of the turbos. If I go to a junk yard/ pick your part place. What vehicles should I look for that would have a T3. Getting it rebuilt is cake, I got friends in race shops who live for turbos. Next, what $ would you think it would run for intercooler + piping and stuff? A guy I work with used to work at a shop, and he said he could get me decent intercoolers for very cheap...i.e.>cost.

Originally posted by DemonZX
OK. Now back on the subject of the turbos. If I go to a junk yard/ pick your part place. What vehicles should I look for that would have a T3. Getting it rebuilt is cake, I got friends in race shops who live for turbos. Next, what $ would you think it would run for intercooler + piping and stuff? A guy I work with used to work at a shop, and he said he could get me decent intercoolers for very cheap...i.e.>cost.

$100 at a junkyard will get you a good intercooler from a DSM or a turbo Ford.

The T3 was used in many cars, in many different versions. The important thing to look for is a water cooled turbo, they are much longer lived, and it makes turbo timers easy to set up.

There are too many cars to list, but turbo Volvo 240s had excellent Garrett T3s for a couple of years.

I would leave the turbos for later, 300hp is a lot in a 2300lb car to start with ;)

Very true! Might as well pick them up, before someone one else. Plus, I can be having the rebuilt. Then when time comes for the engine to be built up. I can just have my boy set it all up at once. This will mainly be a strip car. What would be a sain level of boost to run....for lets say....450-500hp? Plus could you give me maybe 2 or 3 more cars to search for?...Please...thanks bro....CLick!

Originally posted by Cbass
The best choice for a 1st generation V8 swap is the Ford 5.0 engine. It's capable of making every bit as much power as a Chevy engine, assumint the displacement is the same.



Ummm Hate to break it to ya Cbass.. but a 350 Chevy isnt the same displacement as a Ford 5.0 (aka 302)... so thus by your words it cant make the same power. :D


True Ford motors work nicely for the application but if its going to mainly be a strip car, might as well go for the Chevy/Mopar motors and have that limitless power R1-Rider mentioned.

Oh dont forget Chevy parts are usually cheaper... especially when you're talking about forged internals. But of course if you do enough searching or know of a shop that'll locate you the parts for cheap then do what you wish.


All, i've got to say is... if you're gonna make this a strip car... i've got three numbers for you. 4.. 2.. 7..

Might as well do the MoTown 427cid Smallblock 500hp all motor no sweat. :cool:

Originally posted by RedNeck383

Ummm Hate to break it to ya Cbass.. but a 350 Chevy isnt the same displacement as a Ford 5.0 (aka 302)... so thus by your words it cant make the same power. :D


Bah, I mean 305 vs 302, 347 stroker vs 350, 392 vs 383, or 427 vs 427.

Originally posted by RedNeck383

True Ford motors work nicely for the application but if its going to mainly be a strip car, might as well go for the Chevy/Mopar motors and have that limitless power R1-Rider mentioned.

Oh dont forget Chevy parts are usually cheaper... especially when you're talking about forged internals. But of course if you do enough searching or know of a shop that'll locate you the parts for cheap then do what you wish.


All, i've got to say is... if you're gonna make this a strip car... i've got three numbers for you. 4.. 2.. 7..

Might as well do the MoTown 427cid Smallblock 500hp all motor no sweat. :cool:

Yeah, chevy parts are usually cheaper, but not by much when you're dealing with 5.0 parts.

And for the record, Fords can make just as much power from the same displacement and gas that Chebbies or Dodges can :p

Originally posted by Cbass
Yeah, chevy parts are usually cheaper, but not by much when you're dealing with 5.0 parts.

And for the record, Fords can make just as much power from the same displacement and gas that Chebbies or Dodges can :p

Well No duh the 302 can make more power than the 305. The 305 is like worlds worst V8 ever... it cant flow for a damn. The Ford 302 at least is bread to make power. The 305 was a means to an end of the gas hog V8s... it still sucked gas though. :D


Yes we know Ford motors can make power... but it [i]is[/is] cheaper to buy the bigger Chevy motors that make more power.

For Example...

You can buy a Ford 393cid Stroker from a 351W
465hp@6000 466tq@4500
Comp. Ratio 10.3:1
Cost $3995
Dollar Per Horsepower $8.5:1hp

Chevy 383cid Stroker from a 350
538hp@6500rpm
495tq@5000rpm
Comp. Ratio 11:1
Cost $4050
Dollar Per Horsepower $7.5:1hp

Now... there isn't much difference true in the price... but thats the closest comparison between two strokers that i'm willing to devote my time to looking for at the moment hahaha. Both are great buys if you're in the market but the Chevy makes the better Oomph for your dollar... and if you are in the market here are each motors specs...

Ford 393cid Stroker (http://www.speedomotive.com/351w_to_393_street_master.htm)
Chevy 383cid Stroker (http://www.speedomotive.com/500H.P.%20SBC%20SPORTSMAN%20ENGINE.HTM)


For fairness I'll throw in a Mopar Stroker...

Mopar 408cid Stroker from a 360
400hp@5000rpm
452tq@3000rpm
Comp. Ratio 9.9:1
Cost $5237
Dollar Per Horsepower $13:1hp

And thus proves my point that Mopars are just too expensive. But notice the Comp. Ratio is down a tad. Up the CR and up the Output...
Mopar 408cid Stroker (http://www.speedomotive.com/mopar_360_to_408_street_master.htm)

Those would be individual builds though, with that kind of compression, the Ford could be making 500+ hp too...

It's just as easy to build a 500hp Ford as it is to build a 500hp Chevy, but the Chevy will be marginally cheaper. Mind you, once you get into H beam rods, high end aluminum heads and roller valvetrain, it's not much of a price difference at all, maybe $500 on the entire build.

And you can still get at the dizzy on teh Ford :p

But if you'd rather compare the Ford 302 price to a Chevy 350... then shall we?


First comparison will be Stock for Stock. Yes, a tad unfair but a base region of power is needed.

Ford 302 GT-40 Iron Head Long Block (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=920&pid=8278)
270hp
9.0:1
$2595

Chevy 350 Vortec Iron Head Long Block (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=120&pid=115)
330hp
9.1:1
$2222

Now the Fun motors! :D

Ford 302 GT-40 Aluminum Head Long Block (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=920&pid=8290)
340hp
9.0:1
$3099

Ford 302 GT-40 Aluminum Head Long Block (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=920&pid=8289)
345hp
9.0:1
$2995

Chevy 350 Vortec Iron Head Complete Motor (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=120&pid=462)
330hp
9.1:1
$3349

Chevy 350 ZZ4 Aluminum Head Complete Motor (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=120&pid=117)
355hp
10.0:1
$3599


Yet another comparison...

Ford 351 Aluminum Head Complete Motor (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=920&pid=8276)
385hp/377tq
9.0:1
$5295

Chevy 385 Aluminum Head Long Block (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=120&pid=464)
385hp/385tq
9.6:1
$4200

*anurism occuring:bloated:* Well, I was looking at the whole pakage...Like installment ease, and so forth. If the 5.0 bolts right in place & is fuel injected...5.0 all the way! If I wanted to go chevy, and save the money, I would spen the extra $ on getting it to fit in the car..and everything flowing right. Plus, it would be nice to say, "yeah, I have a TT5.0 in my 2500 lbs. car...oh yeah thats with driver + gas!...CLick!"

Oh, yeah not to disrupt you guy's argument...but...none of my recent questions were answered??? j/k:D
.
.
.
I still want the answers though!

What would be a sain level of boost to run....for lets say....450-500hp? Plus could you give me maybe 2 or 3 more cars to search for?...Please...thanks bro....CLick!
:confused:

Good specific examples Redneck, but some of us build our own engines :p Chevies are cheaper, yes, but Fords will make just as much power, and often even more power. Depends on the engine. For $2500 I can build a 400M based engine that make 430hp, 520 lbft, and have lots more potential for stroking (read: another 64 ci).


DemonZX, the level of boost you run depends on a few things, how much your turbocharger flows, how much the cylinder heads flow, and what your static compression is. We'll just assume you're running on premium, so that's the biggest issue cleared up ;). We'll also assume you have a good set of heads that would do a NA motor proud, so there is lots of flow.

You COULD build the engine with 7:1, and 15 psi boost, and with would make a lot of power, but there would be noticeable turbo lag, the power wouldn't be linear at all.

Or, you could build the engine with 9:1 compression, and 8 PSI of boost on pump gas, which would allow you to run higher boost at the strip on race gas. The power would be there from 2000rpm, lots of it. Peak torque at 2500rpm, all the way through 4500rpm, and peak hp at around 5500. It would pull like crazy no matter what the engine speed ;)

The low compression engine would make more hp, but it wouldn't have as much low end torque, and it would have turbo lag.

As for the T3... Well, lots of cars had them, but most only used the T3 for a few years, often opting for cheaper IHI turbos. Here is a great Yahoo group, they can give you more info on what to look for than I can :)

http://autos.groups.yahoo.com/group/jyturbo/

Yeah, I would opt for the lower boost. I like a lot of power, and I like it right away! Thanks guy's for all the help, you don't know how much I appriciatit all!:)

Crap CBass I could have you build my engine, and I will pay for shipping. What would it run me?

5.0 block
heads
larger injectors
cam
turbos

and what ever, little crap, else=?$?:devil:

Originally posted by Cbass
Good specific examples Redneck, but some of us build our own engines :p Chevies are cheaper, yes, but Fords will make just as much power, and often even more power. Depends on the engine. For $2500 I can build a 400M based engine that make 430hp, 520 lbft, and have lots more potential for stroking (read: another 64 ci).




Whats that supposed to mean Mr. Cbass?:p

I was giving a general annalysis on both Manufacture's motors...


Not J-Yard Specials... of course J-Yard Motors are dirt cheap. Thats the reason why they're in the J-Yard! hahah.

I personally think the best J-Yard motor build up is to pull a Chevy 454 or Ford 460 out of a fullsize truck, Rebuild it from the ground up... go .010, take the Crank .010 over to match. Port the heads, bigger cam, and slap on a 6-71 Supercharger and make an easy 600hp on Pump gas.

All told it should cost about $4000 including the 6-71. Now thats a J-Yard Special!

I've got that motor build up in a magazine someplace... i'll try to locate it. Obviously its magazine article so it shows you how to do everything and how much the crap costs. Very neato piece of literature!

Yay! I'm glad that you're going with the TT5.0 idea... Wait.. Are you going single turbo or twins???


I also urge you greatly not to limit this car to a strip only car... I bet it would make a hell of a highway racer. er... Wait.. how are the aerodynamics on that thing? And dont forget BRAKES! And where are the suspension recomendations?

I also vote(if there is a vote) for you to go with lower compression and higher boost. I doubt you'll need all that torque in such a light ass car. Don't forget about all the accesories that are required to run a turbo'ed engine. i.e. wastegate, bov, oil lines, etc.

I'd advise starting with a naturally aspirated 5.0 and T5 to start with, it's still a lot of power in a little car, and then later turbocharge it, once the suspension and brakes are sorted out.

I would recommend the following

Junkyard 5.0 HO and T5 out of any 5.0 HO car (mustang, t-bird, LTD, licoln etc...).

Rebuild with 10:1 forged pistons, full roller heads and cam with stainless valves...

Shorty headers and dual exhaust

Swap kit from Grannies(jury out on this, some V8 RX7 people have had bad experiences with his kit)...

That would be good for 350hp with a mild cam, very streetable, and the 5 speed wouldn't be able to take much more. GSL brakes would be good at that point, but not much further. Get a full autoX suspension kit from Ground Control, and you're ready to go. You'll probably want to get a widebody kit at this point, and new wheels and tires. This would be a perfect time to upgrade to hubs from a Turbo II, and take it's brakes. I'm not entirely clear on how much work that is, and you might need to have suspension arms fabricated. In any case, you'd be able to do IRS at that point too.

I'm going to have a crack at doing my own IRS setup on the '81 RX7, as soon as I have a welder, and I'm not broke. I can't see any reason why it shouldn't work perfectly.

Now the turbocharging is not to be taken lightly. The T5 will not hold up to the power, neither will the stock rods, crank, or axle. You're going to need to replace a lot of things, and it will be expensive as hell. That's one of those "down the road when I have lots of money" things ;)

Originally posted by RedNeck383


Whats that supposed to mean Mr. Cbass?:p

I was giving a general annalysis on both Manufacture's motors...


I'm just fuckin around :hehehe:

Originally posted by RedNeck383

Not Junk-Yard Specials... of course J-Yard Motors are dirt cheap. Thats the reason why they're in the J-Yard! hahah.

I personally think the best J-Yard motor build up is to pull a Chevy 454 or Ford 460 out of a fullsize truck, Rebuild it from the ground up... go .010, take the Crank .010 over to match. Port the heads, bigger cam, and slap on a 6-71 Supercharger and make an easy 600hp on Pump gas.

All told it should cost about $4000 including the 6-71. Now thats a J-Yard Special!

I've got that motor build up in a magazine someplace... i'll try to locate it. Obviously its magazine article so it shows you how to do everything and how much the crap costs. Very neato piece of literature!

Sounds like a good build, but like you said earlier, big blocks are EXPENSIVE, and they don't fit too well into little cars... Actually, I've seen a few big block RX7s running around, they're quite fast.

I'll look for my 400M buildup.. This engine has lots of potential, if you get a steel crank, you can stroke the thing out to 460ci, you can get cleveland heads that flow more than most big blocks need. For $2800 AUS, which is around $1400 USD I think, you can get assembled aluminum heads...

Whats your initial budget, Demon?

I found a car for $700. Pretty much engine shot, body is in good shape, all crap like radio and stuff is pulled out. Perfect for this build! I will when I get my tax return back have about $2500. Then you know I get paid every two weeks, and I will, I hope, win a gang of money on my cruise. So when time comes round to get to business $4500-$5000.

Well, I would advise the 5.0/T5 swap from a 5.0 Mustang, it would probably run you $1000-$2000 depending on the yard, and whether you have to pull it yourself.

Just do a few mild things, have the heads rebuilt and ported, get a street cam, a Cobra or GT40 intake, and good headers. You'll have to do custom exhaust anyways... The stock Mazda differential will hold up under this, and so will the T5 tranny.

That's still 300hp in a 2400 lb car, and you're going to have more power than traction to put it down ;) Assuming you can hook up well, 12s shouldn't be a problem :)

The big issue with the RX7 V8 swap, IMO is the insufficient space for tires. Apparently one guy has managed to get a 275/16 in his stock rear wheel well, but I'm not sure what he had to do to get that in there. I'd advise a good widebody kit, since it'll drop some weight too.

These are just bolt on flares, the cheapest and easiest way to go.

http://images.rotarynews.com/images/Daytona/DSC00020.jpg


These are some very high quality race bodies, and are signifigantly lighter than the stock sheet metal. I'm probably going to go with the GT3 kit, when I get to that point.

http://www.mariahmotorsports.com/exterior/ext_racingbodypkgs.htm

Hey Demon.. I thought you said your friend will sell you a first gen rx7 for 300 bones. Did I miss something or what?

Originally posted by RedNeck383


Well No duh the 302 can make more power than the 305. The 305 is like worlds worst V8 ever... it cant flow for a damn. The Ford 302 at least is bread to make power. The 305 was a means to an end of the gas hog V8s... it still sucked gas though. :D


Yes we know Ford motors can make power... but it [i]is[/is] cheaper to buy the bigger Chevy motors that make more power.

For Example...

You can buy a Ford 393cid Stroker from a 351W
465hp@6000 466tq@4500
Comp. Ratio 10.3:1
Cost $3995
Dollar Per Horsepower $8.5:1hp

Chevy 383cid Stroker from a 350
538hp@6500rpm
495tq@5000rpm
Comp. Ratio 11:1
Cost $4050
Dollar Per Horsepower $7.5:1hp

Now... there isn't much difference true in the price... but thats the closest comparison between two strokers that i'm willing to devote my time to looking for at the moment hahaha. Both are great buys if you're in the market but the Chevy makes the better Oomph for your dollar... and if you are in the market here are each motors specs...

Ford 393cid Stroker (http://www.speedomotive.com/351w_to_393_street_master.htm)
Chevy 383cid Stroker (http://www.speedomotive.com/500H.P.%20SBC%20SPORTSMAN%20ENGINE.HTM)


For fairness I'll throw in a Mopar Stroker...

Mopar 408cid Stroker from a 360
400hp@5000rpm
452tq@3000rpm
Comp. Ratio 9.9:1
Cost $5237
Dollar Per Horsepower $13:1hp

And thus proves my point that Mopars are just too expensive. But notice the Comp. Ratio is down a tad. Up the CR and up the Output...
Mopar 408cid Stroker (http://www.speedomotive.com/mopar_360_to_408_street_master.htm)

In all fairness for the Dodge people, the Mopar engine you included had a lower compression ratio than the others, and the 360 is an already bored 340. I would love to see you guys one up the Hemi. Yes they are expensive, but you get what you pay for. You have no limits with a Hemi.

Yeah, He said he had one in Daytona, but I don't know??? I located one a bit farther south, and it is in great condition for $700.

Originally posted by Polygon


In all fairness for the Dodge people, the Mopar engine you included had a lower compression ratio than the others, and the 360 is an already bored 340. I would love to see you guys one up the Hemi. Yes they are expensive, but you get what you pay for. You have no limits with a Hemi.


Yes Polygon hehe.. If you read my commentary on that particular motor you'll notice that I mention the fact that it does have a lower Compression ratio. And as I also stated, up the Ratio and up the Output. :D

I dunno, Hemi's are nice and can make good power but for 10-12k for a 610hp motor seems a bit much. You can build stronger motors for less...
Mopar 528ci Hemi 610hp/650tq $12,995 (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=122&pid=614)

Chevy 534ci 710hp/675tq $12,995 (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=1579&pid=2597)

Ford 514ci 600hp/590tq $7,295 (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=920&pid=8282)


Note that these are only crate motors, you can build motors to do hell of a lot more for cheaper. For instance a buddy of mine built a 454, which is now a 468 and it pumps out well over 700hp. He built it for about $6000 total. Its all in the knowledge in where the power is. But if you're lazy like I am you just by a motor from a catalog :P

Originally posted by RedNeck383



Yes Polygon hehe.. If you read my commentary on that particular motor you'll notice that I mention the fact that it does have a lower Compression ratio. And as I also stated, up the Ratio and up the Output. :D

I dunno, Hemi's are nice and can make good power but for 10-12k for a 610hp motor seems a bit much. You can build stronger motors for less...
Mopar 528ci Hemi 610hp/650tq $12,995 (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=122&pid=614)

Chevy 534ci 710hp/675tq $12,995 (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=1579&pid=2597)

Ford 514ci 600hp/590tq $7,295 (http://www.sdpc2000.com/cart.asp?action=prod_detail&catid=920&pid=8282)


Note that these are only crate motors, you can build motors to do hell of a lot more for cheaper. For instance a buddy of mine built a 454, which is now a 468 and it pumps out well over 700hp. He built it for about $6000 total. Its all in the knowledge in where the power is. But if you're lazy like I am you just by a motor from a catalog :P

Hey, I don't actually read posts, I just skim. :p

As for the 528 Hemi, I know of a guy that dropped one in and dynoed it at 706HP at the wheels right out of the crate, but yeah, the Chev engines do give the best bang for the buck.

WEll You Need to Start Damn READING---ASS!...Uh, sorry...J/K:licker:

What are the differences between the first and second gen rx7? Also, what kind of power can a the n/a rotary make with a low budget and pump gas? A friend of mine told me that he can get the engine rebuilt for me as long as I pay for the parts..

I don't know much about the Wankel's?! I'm gonna most likely drop in a 5.0 Mustang engine.

Originally posted by fatninja19
What are the differences between the first and second gen rx7? Also, what kind of power can a the n/a rotary make with a low budget and pump gas? A friend of mine told me that he can get the engine rebuilt for me as long as I pay for the parts..

The first gen RX7, with the exception of the GSL-SE model, had the 12A rotary, it's pretty much a lump. Carbureted, 360 lbs, makes 100hp stock. With work, you can get them over 200hp, and it doesn't cost too much at all.

The second gen RX7 used the 13B, the same engine in the GSL-SE first gen. This engine is lighter, fuel injected, and is just a better engine for tuning. 200+ hp naturally aspirated. Once you get into turbos, the sky is the limit. That and engine life :hehehe:

The RE is a great power plant, but a piston engine is more reliable once you get into the 400hp range, and the RX7 is a great car to swap a V8 into.

V8=low end torque! CLick! Light car=lc no traction=nt A little algebra shall we!

V8+lc=nt this is usally a bad formula, but who could resist the frothy coloid of all that thick rubbery smelling joy we love to call a burn out! :D

so... build up a V8 motor that makes minimal Torque and lots of high RPM Horsepower.

Chevy 283, and 302 come into thought. Or build a Ford 289, or 302.


Or... one of those 4.6l SOHC V8's they have in the Mustangs. The Cobra DOHC i'd assume would be too expensive to aquire. But maybe on of the SOHC 4.6's wouldnt be toooo hard to drag out of a junkyard?

I dunno its definately a thought though.

For the RX-7 application I'd say the Ford motor would be best. Even though I'm a Chevy guy, I can see a potential problem in the future of your swap. The distributor is located, as we know, on the back of the motor on a Chevy which may cause clearance problems with the firewall and maybe the hood. Not sure I've never seen a Rx-7 engine bay up close. Thus the Ford with its forward distributor would be a no-brainer install just from thinking about it.

And as we've all agreed on... the motors both can make more than enough power to push that car as fast as anybody would want go in something that small... next to maybe Mario Andretti...



Blah... enough typing.:silly2:

And as we've all agreed on... the motors both can make more than enough power to push that car as fast as anybody would want go in something that small... next to maybe Mario Andretti...

...OR?.....ME...CLick!

AF ate my reply :mad:

Those SOHC Ford engines have a lot of potential, and are lighter than the stock 12A rotary. Downside, they're still a little pricey, and I don't actually know if anyone has done one yet in a RX7.