I Have a 1994 Gt with 52 thousand miles. i have a delima. what is better. a 347 stroker kit or a vortech supercharger.

i have heard a stroker kit would be more reliable but i have also heard the same thing about the supercharger?

any input?

 

I would build the engine first, before supercharging it. Working your way from the ground up always seems the most logical. I'd go with the stroker kit.

 

+1 on the stroker

 

Stroke it to a 347..it has loads of potential for modding later on.

 

Supercharger then build it later for when you need more power.

 

That's what I did and now I wish I would've done it all the way around.

 

right now im leaning more towards the supercharger. but only because im looking to get about 400 hp with it. so i wouldnt get both of them. the supercharger i would be getting would be the kenne bell. i was looking at vortech systems but im more of a roots type fan myself.

 

Kenne Bell is a Twin Screw

 

Is it a DD? or more of a street/strip car? If its just like a weekend car, build a stroked 351, you can get into the 400 inch range and a good set of heads 400hp N/A wouldn't be out of the question. It wouldn't be as cheap as a blower but it depends on what you're looking for.

 

It is a summer car. But it also sees the track every couple of weeks.

 

Isn't a Twin Screw a type of Roots?

 

Roots superchargers are considered "blowers," whereas twin-screw superchargers are considered "compressors." Main difference is that roots units push the air directly from the intake to the engine side, unlike screw units which compress it first.

 

have fun with throwing a supercharger first, blowing your ****, then having to rebuild.

 

what do you recommend to be built up first in preparation for the supercharger

 

stroker with killer parts... then supercharge it.

 

hmmm preferably the rear end 31 spline differential, 31 splines axles, torque boxes welded, axle tubes welded. then get something that will out last the T-5 manual like a TKO-500/600 with a grippy clutch. then if you have money build up a 331 for boost and have fun with it..if you hurt the 331 than you still have some block left to turn it out to a 347.

i went backwards and just put a blower on my car and my auto took a **** on me...whateve its all apart of the game.

 

You know there are thousands of cars out there with stock motors and superchargers right. A basic Vortec,Paxton,Procharger etc... setup at there recommended boost setting from the supercharger company you go with of 8-10psi max. Along with the fuel upgrades and a tune that you need when you do this (I know you know this I am putting that for everyone) and you should be able to get many many miles out of a stock motor.

A good example is my friends 98 F150 with a Procharger at 10psi has all the needed items above and has been under boost since 2002. It still has the stock motor, minus the tranny which blew lol. It has over 130k on it now.

 

i have 30k miles with my blower and stock motor running 12#'s of boost....the tranny was the only problem because it couldnt handle the torque.

 

My car was doing fine with the supercharger when it had the stock motor. The only reason I got the stroker was because I wanted even more power. It all depends on what you want out of the car. If you wanna reach 400-430 RWHP and be done with it then go ahead and get a S/C. If you know that that's not gonna be enough for you then build the motor and then boost it. You'll save money that way.

 

What about a 2.1L kenne bell at 8 PSI? Do you thionk that would be fine on the stock motor. i have already replaced the clutch with something that can handle the torque.

 

neither, I say go turbo with no more than 9-10 psi...400 horse should be easily attainable with good tune, and mileage is relatively the same when just cruising around without putting load on motor...There's plenty of guys who are running turbo/twin turbo setups on stock motors pushing 450-500 hp, it just takes research for the right unit, quality fuel system, and a good, safe tune

 

realistically, if 400rwhp is all you want, then the stroker and a set of ported heads will put you there with a motor that will last 200K if you maintain it. Boosted engines are definitely under more stress and even when built for it, > atmospheric pressure nets more and more expensive maintenance. I'd consider a blower motor a 100K mile engine. Especially in windsor blocks.

Put a set of really good heads (yates, TF TW, AFR 185) on it and a decent cam and maybe a proper intake manifold (you can pick one up used for stupid cheap) and you'll be able to get pretty damn close to 400 at the tire. Then if you bore and stroke it to say a 347 you're looking at a pretty nasty NA ride on pump gas with a compression ratio that's not going to reject a little boost later on when you get more power hungry.

Your existing motor is young enough miles wise to tolerate the blower but it's old enough time wise that you'll want to tear it all the way down and freshen it up a bit with new rings, bearings and better fasteners (which is sort of a side effect of giving it new gaskets ... sorta). Proabably a stud girdle too.

If you get 8lbs in a stock 94 5.0 from a KB... I'm betting on about 330rwhp. Lots more tq but don't expect much power from your shitty shitty shitty stock heads. They suck ****. The stock cam is kinda *** too.

Really... I'd start with a head/cam/intake swap to something nice (edelbrock even makes complete and cheap power packs for specified power levels). Add stroker, and blower in that order and see what makes you happy. I bet you don't need boost to be happy.

 

I have a procharger running 9lbs of boost on the stock block for over a year and a half with no problems other then the stock auto tranny going out on me...I sold the p1sc and pulled the stock engine out having the bottom end built, going with a set of blower cams, ported heads and throwing a kb 2.6 on that. The stock engine is fine I just want more power!

 

appearantly the stock engine is not fine at all... you're having yours built and running pretty low boost. 5.0's are a lot more fragile than modulars in many respects.

 

True, but it's not difficult to get 400-450 rwhp/rwtq with a safe tune on a stock motor of a 5.0 car, and be fairly "life sustainable" if it is going to be a street car that occasionally gets thumped on...if it's hammered from stop light to stop light, ANY motor is going to wear out

 

Check out the Edelbrock E-Force, when I get my gt that's what I'm looking at. quoted 466hp/439tq @ 5# on completely stock, forge and you might be able to run 8-10#, stroke it too and I don't know the numbers but it'll probably be insane

(edit: you can probably run higher than 10# on a built engine but I like to keep it safe )

 

in my openion the 5.0 block would make much more power with a stroker kit but if ur looking to make it a dd then id go with the blower. its much more street drivable. everyone supercharges. im not into the follow the leader bullshit. my friends say just spray it all the way. but for me that gives people a reason to talk **** when u stomp them into the ground. id stroke it then if u want u can change the pistions for a lower compresion and then blow it. itl make much more power and last a lot longer than with a stock block.