Looking for educated advice.

[SkylineUSA]

I am selling all of my FI stuff. Let me know what you need, I'll sell it for under what I paid for it, if you want to go that route.

I have Pro M 80mm 42lbs and injectors, complete harness with computer, all the sensors, etc.

[351wStang]

Oh sorry, by FI I meant forced induction, not fuel injected lol. Sorry for the misunderstanding.

[SkylineUSA]

No worries

[boosted331]

Theres a local guy here with the www.superchargerhelp.com bracket setup, not sure if it was 8-rib or 10-rib, and he said he was getting zero slip running 20 pounds from a YS-trim into a 347. That's a better way to go than cogs for the street, because cog belts have a tendency to destroy themselves on a street car with a stick. If you do go cogs you must run a T-trim, or a HD S-trim. The S-trim's bearings cannot handle the side loading put on them by a cinched down cog belt and will eat themselves up in short order. A HD s-trim is one that has been upgraded with better bearings, and it should be marked on the little ID label on the head unit. T-trim's come with the better bearings standard. Look on the Corral, there are always people selling S-trim's for cheap on there. It's a great way to taste boost for the first time.

[351wStang]

Ok, thanks again guys for all your help. I will look into an S-Trim some more and see what all is out there. I have been doing some google searches to help figure out what some of my options are. So basically all I need is the carb, hat, headunit, and piping. Then I could use some pointers on carb cfm, and fuel delivery. I will look around and see what all I can find. If you dont mind helping me pick and choose components it would be greatly appreciated. Thanks again. I am looking forward to this.

[SkylineUSA]

Originally Posted by boosted331

Theres a local guy here with the www.superchargerhelp.com bracket setup, not sure if it was 8-rib or 10-rib, and he said he was getting zero slip running 20 pounds from a YS-trim into a 347. That's a better way to go than cogs for the street, because cog belts have a tendency to destroy themselves on a street car with a stick. If you do go cogs you must run a T-trim, or a HD S-trim. The S-trim's bearings cannot handle the side loading put on them by a cinched down cog belt and will eat themselves up in short order. A HD s-trim is one that has been upgraded with better bearings, and it should be marked on the little ID label on the head unit. T-trim's come with the better bearings standard. Look on the Corral, there are always people selling S-trim's for cheap on there. It's a great way to taste boost for the first time.

If the cog has teeth, why would there be more side load? Is that what you are verfered to by cinching down?

With that braket you mentioned, don't you think you would greatly increase your side load? You are effectively torquing on the pulley harder with the belt by using that bracket, that load will be felt on the bearings. Unless there is something I am missing?

I have not ran a cog set up, so I would look into that a little more with the advice of what boosted mentioned then.

[351wStang]

What kind of mounting plate/bracket or whatever would I need to buy for a 87-93 coupe with my 351w if I bought a S-Trim headpeice? Then what size pullies (thinking 8 rib)? Where can I get the piping I would need to run from the blower to the carb hat? I need the blower, gears, piping, intake, carb, carb hat, fuel pump and pressure regulator. Anything else? Does the blower need some kind of oil or coolant? If I have a fuel pump on the block do I still need 1 in the tank? I'm ready to start putting this all together as soon as I get my short block back from the machine shop.

[boosted331]

Originally Posted by SkylineUSA

If the cog has teeth, why would there be more side load? Is that what you are verfered to by cinching down?

With that braket you mentioned, don't you think you would greatly increase your side load? You are effectively torquing on the pulley harder with the belt by using that bracket, that load will be felt on the bearings. Unless there is something I am missing?

I have not ran a cog set up, so I would look into that a little more with the advice of what boosted mentioned then.

You run a cog belt a LOT tighter on the blower, which is what cause the side loads on the blower, as well as additional stress on the snout of the crank. With a serpentine belt a bit of slip is fine and even helpful for letting the blower gradually slow down to keep pace with the motor after an upshift, but you don't want that with cogs. Any slip in the cogs and you shear all the teeth of the belt and it's useless. The SCH bracket/pulley setup uses more, bigger idler pulleys to give you more belt wrap, and the car I saw had a supercharger brace which mounts to the supercharger pulley and to the crankshaft pulley to help reduce side loading and bracket flex, although I don't know if that is standard equipment on the SCH bracket setup. If I were doing cogs or even a higher boost (15> psi) serpentine setup there is no way I would be running it without the crank-to-blower brace.

I'm not super familiar with running a Vortech on a 351W, but there is lots of info on the Corral. From what i've seen you can run the stock bracket and it's iffy if it'll clear the hood, or you can have your stock bracket modified by a few different companies. For the blower discharge i'd just buy a 3" J-bend and cut it to fit. For pullies the most common sizes are 6.87", and 8" for the crank pullies, and 3.33", 3.12", 2.95", 2.75" for the blower pullies. I would stick to the 6.87" crank pulley, as even the 8" crank and 3.33" blower would probably net you 12+ pounds of boost. The 6.87 crank and 3.12 blower pulley would be a good choice for around 10 pounds of boost on a warmed over 351. Vortech's are fed oil from your motor, you just need to punch a hole for the drain in your oil pan, it's not hard. I personally am not a fan of mechanical pumps, I would ditch it for a good electric pump.

[351wStang]

Ok, thanks again guys. I will look into all this new info some more tomarrow after work. I could care less about hood clearance, I'm thinking about an extended cowl lift off hood anyway. Thought about custom piping a conical air filter up into the back of the cowl behind the carb to get a straight shot at cooler air. Any flaws to this idea or should I just run it out front somewhere like a CAI? What do you mean by blower discharge? The pipe between the blower and the carb? I'm going to look into fuel pumps and pressure regulators tomarrow so I'm sure I will be back with questions on them as well. I really do appreciate this guys. I'm learning alot and I think I can pull it off. Thanks for the continued support.

[351wStang]

Originally Posted by boosted331

If you will sway away from the N/A side, that combo you described with something like an F-cam (224/224 .512/.512 114 LSA) and an S-trim would make 500 RWHP reliably without complaint.

Ok, if I run an F cam with 1.7's I will have to change my valve spring. So if I'm goin thrue all that would I be better off with an F cam with 1.7's or something like Trick Flow's stage 2 cam?
Also I called vortech and they dont offer any complete systems for a sbf carb'd application. So this will be custom after all.

[SkylineUSA]

Originally Posted by 351wStang

Ok, if I run an F cam with 1.7's I will have to change my valve spring. So if I'm goin thrue all that would I be better off with an F cam with 1.7's or something like Trick Flow's stage 2 cam?
Also I called vortech and they dont offer any complete systems for a sbf carb'd application. So this will be custom after all.

Did you see Brent, over 1000rwhp with an F303 on a 302 block. Your car is going to be bad, once you go turbo of course

[SkylineUSA]

Originally Posted by boosted331

You run a cog belt a LOT tighter on the blower, which is what cause the side loads on the blower, as well as additional stress on the snout of the crank. With a serpentine belt a bit of slip is fine and even helpful for letting the blower gradually slow down to keep pace with the motor after an upshift, but you don't want that with cogs. Any slip in the cogs and you shear all the teeth of the belt and it's useless. The SCH bracket/pulley setup uses more, bigger idler pulleys to give you more belt wrap, and the car I saw had a supercharger brace which mounts to the supercharger pulley and to the crankshaft pulley to help reduce side loading and bracket flex, although I don't know if that is standard equipment on the SCH bracket setup. If I were doing cogs or even a higher boost (15> psi) serpentine setup there is no way I would be running it without the crank-to-blower brace.

I'm not super familiar with running a Vortech on a 351W, but there is lots of info on the Corral. From what i've seen you can run the stock bracket and it's iffy if it'll clear the hood, or you can have your stock bracket modified by a few different companies. For the blower discharge i'd just buy a 3" J-bend and cut it to fit. For pullies the most common sizes are 6.87", and 8" for the crank pullies, and 3.33", 3.12", 2.95", 2.75" for the blower pullies. I would stick to the 6.87" crank pulley, as even the 8" crank and 3.33" blower would probably net you 12+ pounds of boost. The 6.87 crank and 3.12 blower pulley would be a good choice for around 10 pounds of boost on a warmed over 351. Vortech's are fed oil from your motor, you just need to punch a hole for the drain in your oil pan, it's not hard. I personally am not a fan of mechanical pumps, I would ditch it for a good electric pump.

Thanks for the post boosted.

I am pretty sure my front is an 8", and I run a 3.33 for 8lbs on my car, but I could be mistaken as I always swap the smaller pulley.

Boosted, what were you refering to about the mech/elec pump? Oil pump? If so, do you have any pics of your set-up?

[351wStang]

Originally Posted by SkylineUSA

what were you refering to about the mech/elec pump? Oil pump? If so, do you have any pics of your set-up?

fuel pump

[351wStang]

Originally Posted by SkylineUSA

Did you see Brent, over 1000rwhp with an F303 on a 302 block. Your car is going to be bad, once you go turbo of course

Ya I'm plannin on finishin this build with an S-Trim and drive it for a while. Then in a year or so I may get a sportsman or dart block or somethin and run a T76 or somethin.

[SkylineUSA]

Originally Posted by 351wStang

Ya I'm plannin on finishin this build with an S-Trim and drive it for a while. Then in a year or so I may get a sportsman or dart block or somethin and run a T76 or somethin.

That is the same road I took

Good luck on it, and take pics.