how much hp can a tpi system support
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how much hp can a tpi system support
i'm new to tpi so help me out, with a few simple mods how much hp can a tpi system handle? i know they have tq but what can you do to increase hp? i'm asking because i thought a 383 would be fun with tpi. thanks jason
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Car: 1987 IROC-Z
Engine: 305 TPI
Transmission: T5
the average tpi system can support up to well over 300hp if im not mistaken, but, in a 383 or 350 or any size engine I definatly suggest you invest in aftermarket intake manifold & runners. this will help air flow considerably.
Last edited by 5SIZ; 08-21-2002 at 06:39 PM.
#4
For 450-500 HP, i would suggest talking to John Millican about getting a modified LT1 intake. Will breathe great for higher horsepower than a ported TPI could, and for about the same or less money.
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Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Originally posted by Astro
For 450-500 HP, i would suggest talking to John Millican about getting a modified LT1 intake. Will breathe great for higher horsepower than a ported TPI could, and for about the same or less money.
For 450-500 HP, i would suggest talking to John Millican about getting a modified LT1 intake. Will breathe great for higher horsepower than a ported TPI could, and for about the same or less money.
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Car: 1991 Trans Am
Engine: 305 TPI
Transmission: 700R4
Depends on the type of air metering system. A MAF car can support up to around 325hp. After this point the MAF can become a restriction to air flow. Speed density systems have no restriction to air flow and can theoretically support an unlimited amount of horsepower.
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Car: 04 GTO
Engine: LS1
Transmission: M12 T56
Yeah, stock TPI parts with some porting are good enough to make somewhere over 300hp and have been on some low 13 second cars and even beyond with some magic. I'm interested to see what can be done with a siamesed stock base and stock runners, since theoretcially you don't need large tube runners with a siamesed base since you have 2 for each hole to breath through now.
But on a big inch motor stock TPI wouldn't be too much fun.
But on a big inch motor stock TPI wouldn't be too much fun.
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Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Originally posted by Ed Maher
Yeah, stock TPI parts with some porting are good enough to make somewhere over 300hp and have been on some low 13 second cars and even beyond with some magic. I'm interested to see what can be done with a siamesed stock base and stock runners, since theoretcially you don't need large tube runners with a siamesed base since you have 2 for each hole to breath through now.
But on a big inch motor stock TPI wouldn't be too much fun.
Yeah, stock TPI parts with some porting are good enough to make somewhere over 300hp and have been on some low 13 second cars and even beyond with some magic. I'm interested to see what can be done with a siamesed stock base and stock runners, since theoretcially you don't need large tube runners with a siamesed base since you have 2 for each hole to breath through now.
But on a big inch motor stock TPI wouldn't be too much fun.
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
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N/A or ??
N/A prolly like 500 would be the limit on a ported aftermarket setup..
-- Joe
N/A prolly like 500 would be the limit on a ported aftermarket setup..
-- Joe
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Car: 88 GTA
Engine: modified L98
Transmission: 700r4
Axle/Gears: 3.27 9-bolt
Assuming a 18% drivetrain loss, I'm making about 330 hp at the crank with a completely stock TPI setup, and a MAF sensor. I think that the TPI can make a lot more power than most people think it can, but it's really finicky.
#14
Originally posted by ir0cz
Isn't there a guy on here running like a 12.5 w/ a TPI setup? I can't remember his name though. He's a teacher...and has owned the car since new...that's all i remember from his site.
Isn't there a guy on here running like a 12.5 w/ a TPI setup? I can't remember his name though. He's a teacher...and has owned the car since new...that's all i remember from his site.
The Vortec setup with PROM calibration would be a nice motor and have 400+HP, but it is still at 4800RPMs due to the "Tuned" runner length. HTHs
#15
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Originally posted by 86 sc
wow maby i'll just stick with carb, and sneek pass the emission guy!
wow maby i'll just stick with carb, and sneek pass the emission guy!
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Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Originally posted by 86 sc
thats true but i'm in college a freshman at that, so i don't have much fundage
thats true but i'm in college a freshman at that, so i don't have much fundage
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Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Originally posted by 86 sc
any efi's for a 454?
any efi's for a 454?
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Car: 04 GTO
Engine: LS1
Transmission: M12 T56
Originally posted by 86 sc
i wounder what kind of performance you could get with a tbi setup on a bbc?
i wounder what kind of performance you could get with a tbi setup on a bbc?
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Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Originally posted by Ed Maher
They work so good that all the fast ones rip it straight off and swap to carb. The TBI 454 SS was a performance joke
They work so good that all the fast ones rip it straight off and swap to carb. The TBI 454 SS was a performance joke
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Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Now those aftermarket systems are a different story. If you read any chevy mags. or such, there's always a guy w/ a fuel injected big block making MUCH power. Problem is that those systems is that they cost 2-3 grand! So carb the obvious choice on a BB...at least for the average guy.
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