TPIS throttle body
07-14-2003, 10:11 AM
#1
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TPIS throttle body just saw this listed in tbyrne's web page...anybody used it or seen it on a car? results? opinions? they claim 30hp gain on a modded motor!...expensive mod for 600 bucks I think it was but for 30hp I will buy it...just want to be sure it isn't bogus
Rick
Rick
07-14-2003, 11:25 AM
#2
TECH Senior Member
Re: TPIS throttle body Read it closely. It says that modified motors have seen close to 30 hp. That probably doesn't mean with a stock intake manifold.
I can certainly see a 30 HP gain (at the flywheel) on a solid lift 427ci engine spinning 8000 RPM over a bone stock TB IF...and this is a BIG IF, it has an intake manifold with an inlet as big as the TB. 1200cfm is a helluva lot more than stock but it doesn't mean jack with a 75mm oriface right behind it.
On an engine with a stock inlet manifold I can see the same gain as you would get by porting your stock TB and no more.
I can certainly see a 30 HP gain (at the flywheel) on a solid lift 427ci engine spinning 8000 RPM over a bone stock TB IF...and this is a BIG IF, it has an intake manifold with an inlet as big as the TB. 1200cfm is a helluva lot more than stock but it doesn't mean jack with a 75mm oriface right behind it.
On an engine with a stock inlet manifold I can see the same gain as you would get by porting your stock TB and no more.
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07-14-2003, 05:45 PM
#4
Re: TPIS throttle body Talked to the guys today at TPIS about this setup. They have seen CLOSE to 25FWHP on a heads cam setup WITH the modded intake. The intake is another 500 bucks with an LS6 exchange intake to boot. So 1000 bucks for 25FWHP. If youre maxxing out your setup, go for it. Otherwise enjoy the stock ported TB I definately wouldnt do it on a stock cube motor. It would have to be over 400 cubes and spin the hell out of it 
