possible to make 420+ HP 383
Thread Starter
Supreme Member
Joined: Oct 2001
Posts: 3,155
Likes: 2
From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
possible to make 420+ HP 383
i want to build a 420+ hp motor but i need to do it w/a small block. is it possible to take a 350 or 383 short block bottom end and make 420 hp with it with a cam, heads, and my TPI intake???? 
Senior Member
Joined: Jan 2002
Posts: 943
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From: Chesapeake Va
it's possible to make more power than that with the right combo, however, you can't just slap parts together and expect them to work the best, they need to matched to each other for the best performance. I don't think you'll see that much H.P. using a TPI setup, the way they are tuned limits them to about 4500 RPM max. if you use a mini-ram or super-ram then it's more than possible.
just remember this simple equation H.P. = $$$$$$$.$$
just remember this simple equation H.P. = $$$$$$$.$$
Junior Member
Joined: Apr 2003
Posts: 79
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Car: Camaro RS
Engine: 305ci TBI
Transmission: TH-700R4
Originally posted by 1986redbird
it's possible to make more power than that with the right combo, however, you can't just slap parts together and expect them to work the best, they need to matched to each other for the best performance. I don't think you'll see that much H.P. using a TPI setup, the way they are tuned limits them to about 4500 RPM max. if you use a mini-ram or super-ram then it's more than possible.
just remember this simple equation H.P. = $$$$$$$.$$
it's possible to make more power than that with the right combo, however, you can't just slap parts together and expect them to work the best, they need to matched to each other for the best performance. I don't think you'll see that much H.P. using a TPI setup, the way they are tuned limits them to about 4500 RPM max. if you use a mini-ram or super-ram then it's more than possible.
just remember this simple equation H.P. = $$$$$$$.$$
SSBO
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
If you want over 300hp, dump the TPI... its the performance equivalent of asthma 
Put on a 4bbl and it will make as much power as you could ever want.
Put on a 4bbl and it will make as much power as you could ever want.
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