Header Performance
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Joined: Aug 2004
Posts: 1,327
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Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
Header Performance
Headers seem to be a popular mod to TPI's. Will you see a gain in horsepower and/or E.T. on a stock L98? If so, how much?
J
J
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Joined: Jul 2001
Posts: 5,225
Likes: 70
From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
It will give you gains for sure. I have not been to the track since I put them in, but it pulls way harder up top. You will see even more gains if you do headers, hi-flow cat, and a good catback.
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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
My 350 (not a TPI) wouldn't pull past 4500 with L69 manifolds... since headers and exhaust, it pulls hard to 5500!
Thread Starter
Supreme Member
Joined: Aug 2004
Posts: 1,327
Likes: 0
Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
power
Sounds good. I already have a catback and noticed some more power. Now I just got to find the funds for some 1 3/4's 
Member
Joined: Oct 2004
Posts: 423
Likes: 1
From: Hobby/SE Houston tx
Car: 87-Z r.i.p & 93-Z sold 99s-10
Engine: 305 TPI , 350 LT1, 2.2 4cylinder
Transmission: 700 R4, 4l60, ?
headers on my stock 305 lowered my 1/4 e.t. from 15.4 to 14.9 ....i could only imagine what it will do with a 350 ...take it to the track and let us know ...and it will pull more rpm too
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Supreme Member
Joined: Aug 2004
Posts: 1,327
Likes: 0
Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
Originally posted by rudyt5000
headers on my stock 305 lowered my 1/4 e.t. from 15.4 to 14.9 ....i could only imagine what it will do with a 350 ...take it to the track and let us know ...and it will pull more rpm too
headers on my stock 305 lowered my 1/4 e.t. from 15.4 to 14.9 ....i could only imagine what it will do with a 350 ...take it to the track and let us know ...and it will pull more rpm too
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Thread Starter
Supreme Member
Joined: Aug 2004
Posts: 1,327
Likes: 0
Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
.
Better gas mileage until I hear the sound of the exhaust with headers and floor it everywhre 
TGO Supporter
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
Re: .
Originally posted by 87TPI350KID
Better gas mileage until I hear the sound of the exhaust with headers and floor it everywhre
Better gas mileage until I hear the sound of the exhaust with headers and floor it everywhre
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