I for get what they are called, turbo chanber pops up, but are Afterburner's headers that was designed with a combination of different header designs avalable for for a 5.7 TPI IROC? What do you guys think of theses headers, what kind of numbers do they produce?

 

I have only seen them for light truck and older Nova/Chevelle/Camaro applications, not 3rd gen. Probably because it wouldn't work in a shortie style, and that's about all you can do with our cramped engine compartments.

In concept, it sounds like it should work. I haven't seen any dyno data or other comparison testing to prove it, though.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).