ok i saw a few posts back that i think it was edlebrock TES or HEDMAN where the outer 2 cylinders where 1-5/8 and the inners were 1-1/2, is this true, and if so please explain.
i have a friend who is selling his 1-1/2" headers and i would buy them if this was true and if i could get a ypipe for it, thanks.



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Jarrad
1990 IROC-Z L98 350 TPI
TH-700R4
G92- 9 Bolt Borg-Warner 3.27gears
Bright Red Hardtop/ Grey Interior


DAILY DRIVER: 1991 GREY S10 2.5L/5SPD -FOR SALE.

 

Older Edelbrock TES had the different sized tubing. The newer ones are all 1 5/8.

I would recommend at least 1 5/8 for a mild 5.7 (no heads or big cam changes). You will need a 1 3/4 for any serious mods.

Plan ahead, and STAY AWAY from those little headers.



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Mike L.
It ain't pretty.......

1987 IROC Z TPI 350 A4 3.27 Borg-Warner.

Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog

http://www.MichaelLasiuta.home.att.net

**BOYCOTT LAPEER DRAGWAY**

 

for $75 bucks i cant beat it, and they are already coated.... would you buy them or not?

and i am gonna do a head and cam swap in about a year, but thats then.

 

Those little headers might not be as bad as you think. In CHP i think it was, they did a header dyno shootout. Guess what size headers made the best overall power. The 1 1/2 primaries, i think it was on a SB 350, with somewhere around 400 horspower. This not the norm though, I can find the mag if someone is interested in the exact details.

The 1 5/8 are best for 350s up to 400 horsepower, going by the dyno tests ive read over the years.


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Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!

 

For $75 you can't go wrong...but do you want to swap headers again in a year

I'd pass.....those headers may make better power than the stock manifolds, but to me their not worth the hassle of installing.

Heres an idea. Buy them for $75 and re-sell them here in the for sale section for $150. Then your $150 closer to real headers

BTW- Make sure the Y-Pipe comes with them or forget about buying them. They require a specific Y-pipe, and fabbing one will cost you about $150 if you take it to an exhaust shop.




------------------
Mike L.
It ain't pretty.......

1987 IROC Z TPI 350 A4 3.27 Borg-Warner.

Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog

http://www.MichaelLasiuta.home.att.net

**BOYCOTT LAPEER DRAGWAY**