Thinking Of Going Vortec

Well i was looking at my edelbrock magazine and i saw that they had a hi-flow tpi vortec system, well they say you get 25hp with just switching to there hi-flow tpi, how much hp/tq would i get with getting vortec heads, and switching to a vortec style tpi system?

Wait for 89, he's the guru of vortec. From what i hear, they will be really good. It's the setup, i may choose to go with on the 305, the tpi, runners, then the intake, along with the heads casting #062??

Damn that would be a fast iroc if you go with the hi-flow vortec tpi set up.

if its a 350 H.O. doesnt it already have vortec heads?

You know what i just checked all the paperwork on the car and it already has the tpi vortec system, i just bought the car, and i didn't realize it was already vortec. well don't i feel stupid, thanks that just saved me some money.

Go with the vortec setup...ive heard good things about it, from a guy that had a few diffrent setups

Go with the vortec setup...ive heard good things about it, from a guy that had a few diffrent setups

he already has the vortec set up, he just didnt relize it.

that can't be right. To my knowledge, Vortec heads weren't made until 1996. And there is no factory TPI/vortec system. You might have TPI, but no vortec heads. Unless you are saying that the person that sold the car to you already put it on there.

And, no, the 350 H.O. does not come with vortec heads.

that can't be right. To my knowledge, Vortec heads weren't made until 1996. And there is no factory TPI/vortec system. You might have TPI, but no vortec heads. Unless you are saying that the person that sold the car to you already put it on there.

And, no, the 350 H.O. does not come with vortec heads.

The guy i bought it from dropped a new gm 350 H.O. vortec engine witht the edelbrock tpi vortec system. and the 350 H.O. does come with the vortec heads.

i thought you were talking about the 350 H.O. engine that came as an option in third gens and monte carlos. Apparently you're talking about GM performance parts crate engine 350 H.O. the original did not come with vortec heads.

he makes a good point. And i believe he is right. I dont think the vortec design was around in 89.

oops.....i think i skipped over some posts....disreguard that last post....

Yeah it's a brand new crate engine. i haven't had really enough time to read through all the paper work yet, i've only driven the car about 7 times. i just use my accord to get me around i'm trying to keep the mileage down on my precious camaro.

yeah!!! 100 posts!!! uh....101 now i gues....anyways, yay!

someone get this man a cookie.

yeah!!! 100 posts!!! uh....101 now i gues....anyways, yay!


lol, im almost at 200, 52 more posts and i will stget another ar :smokin:

EDIT: nm, i got my 3rd star just 2 posts later

someone get this man a cookie.

Already started baking them.

the Soggin dickey tpi/vortec setup is bad ass. if you have a 350 tpi setup the baseplate alone is worth around 20hp, and the heads are worth around 35hp. the crate engine they sell with this setup makes 360hp. using stock spec runners, plenium and throttle body.

89, not taking over the thread, but what if i went with L98 vette aluminum heads on my 305? I read somewhere that the coumbusting(sp) chamber is 58cc like the 305 heads, along with 1.94 and 1.50 something (could you explain what this means please?!?! or what they represent). That would be a perfect match wouldn't it? Would they be better than the vortecs?

the Soggin dickey tpi/vortec setup is bad ass. if you have a 350 tpi setup the baseplate alone is worth around 20hp, and the heads are worth around 35hp. the crate engine they sell with this setup makes 360hp. using stock spec runners, plenium and throttle body.

Yeah it's prety bad ass, i guess that's why i smoked smokey818

the measurements you are referring to are the combustion chamber size (in cubic centimeters or cc's) and the diameter of the valves in inches. the aluminum corvette heads have combustion chambers 58 cubic centimeters in size. and the intake valve is 1.94 inches across, with a 1.5 inch diameter exhaust valve. the aluminum will dissepate heat faster, however the port design is at this point roughly 40 or 50 years old.

the vortec head is listed at a 64cc chamber but ive been told its closer to 61cc's. and also has 1.94/1.5 inch valves. however the port design is far superior to the older style heads, and will offer much greater performance. even with slightly lower compression and iron vs aluminum heads.

So the 64cc or 61cc would hurt the 305 badly? Also, i rather go witht those heads cuz they are cheaper than the world producst heads, and what intake would i have to get to match up to heads perfectly. I remember you saying something that i have to grind out the intake manifold to match, i don't know. Also what cam to match the above heads and intake combo? Something with nasty thrash perhaps?

89, shit i know i'm a pest, i'll be asking until the motor is where i want it. Could you give me the part numbers on those parts, or the complete name of them?

I may begin to be a problem, im sorry, but are these the heads right here?
http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=4242&prmenbr=361
$260 complete is not bad at all, i hope these are the ones. The int. and ext. match what you said early and they 64cc, what does the 170cc stand for?

lol, geeze, im gone for a day and i got three questions in one thread. first the easy one, the 170cc measurement is the volume of the intake runner, typically speaking more here is better because it has more volume to supply the engine with air, however the larger volumes tend to sacrifice low end power for high rpm power. 170 is very good for a street strip motor. and yes those are what you are looking for.

the lower compression can be offset by using steel shim gaskets that compress to .015 inches rather than .045 inches as the stock ones do. so compression is less of an issue on the 305 swap. you should be able to maintain and maybe increase compression with the vortec steel shim setup. As far as intake manifolds, ive already posted a link to the GMPP vortec TBI manifold, but meh, ill do it again...

http://www.gmgoodwrench.com/perfpartsjsp/partlist.jsp?cat=9405&section=ep#12489371

19th one from the top.

and no grinding will be nessesary. the only time you would have to grind the intake would be if you were trying to use an old style intake with the vortec heads. but with intakes designed for the vortec bolt pattern they are a direct fit. oh damn forgot you have TPI not TBI, hold on new link for the TPI intake....

http://www.sdpc2000.com/catalog/1460/SDPC-TPI-Vortec-Baseplate.htm

youll need both the baseplate, and the egr pipe listed below to make it emissions legal. it will require a slight modification to your passenger side header pipe.

also check out this link showing some installation details and dyno results...

http://www.sdpc2000.com/htm/vortec_tpi.html

hope that answers some questions.

as far as the perfect cam, it all depends on the rest of your cars setup. personally i like the grinds from comp cams xtreme energy line for hydraulic roller computer controled applications. such as the HR258. but i would call the cam help line and get their opinion as they know far more than i do about cam selection.

Word, thanks 89. Gonna start ordering each piece, piece by piece. My 305 is gonna be walking lambo's :evillol: :smokin: . Would it be a good idea to get them polished, port n' polished, do i know what i'm talking about, or straight out the box are they good from get go?

SCREW THE 305, just put a ls7 in it

just wanna butt in for a sec and offer my opinion on porting. 89 obiously knows his stuff so im not gonna step on his toes but i have seen instances in Hot Rod and Car Craft, etc. where porting vortech heads actually resulted in lower hp numbers on a dyno. the design of these heads is very efficient. flow and dyno numbers well surpassed the numbers seen using old style fuelie heads on the same engine. unless the person doing the porting is very good ur better off bolting them on and going. thats wut theyre designed to do.

I figured that they wouldn't need to be ported. Thanks for the tip, noricehere01.

yep... porting is not necessary on the Vortec heads, and will not result in a signficant benefit (especially for what it cost to have it done). polishing couldn't hurt though... although I wouldn't bother with it. your money is better spent on performance valve springs and rockers.

well spoke noricehere, there is actually an article, id have to dig through my magazines to find it, but they had a very reputable head machinest work over a set of vortec heads, they did 9 different flow tests at different stages in porting and polishing, and pretty much the only modification that increased flow substancially was to enlarge the valves to 2.02/1.60 sizes, (which you cant do with a 305) most other mods were only marginally benificial and some did indeed hinder airflow. As ive said before, i think you should run them out of the box, with some milodon megaflow valves and a good cam.

and ive said it before, i know some, but not all, if i ever post anything thats wrong, or only half true, i certainly dont mind people correcting me. now if im right, and you attempt to correct me with false information, your soul and a $0.50 surcharge will belong to me :evillol:

Here is a place to get a Vortec 350 crate motor

http://www.crateenginedepot.com/store/350-Crate-Engine-330HP-Deluxe-HO-with-Iron-Vortec-Heads-12496968-P5C0.aspx

well, it has vortec heads on it, but its not a vortec engine. not in terms of the R code 350 youd find at the junkyard.