Is true dual exhaust a good idea for a 3800SC? (Page 4/4)
dobey SEP 13, 03:39 PM

quote
Originally posted by zmcdonal:
Well I'm definitely not going to have custom headers made, that would be way too expensive. The only reason I am even considering headers is because there are affordable options.

That's another thing that makes this difficult, I don't know how to weld, so I have to have somewhat of a plan in mind before I take it to my exhaust guy.



Too expensive? You realize you're trying to use a Ferrari muffler in a Fiero with a 3800 right? No matter what you do, you're going to have to get custom exhaust made. Headers are not that expensive. They can be, but they don't have to be, either.

Have you even gotten a quote for what it would cost to make the exhaust? If you can't weld and can't pay a shop to do it, I'd suggest finding a local who can help for cheap then; or learning to weld. No time like the present.
Getafix OCT 07, 10:07 PM
The true-dual exhaust system on my Fiero with L32 (3800SC series III with 4T65e HD), Haltech Nexus ECM/TCM, a drive-by-wire system. L32 is an even fire engine, so does not need crossovers. Flanges are West Coast Fiero, headers are based on my design, fabricated to my spec, and mufflers are custom SpinTech. Trunk is not cut. Yes, have dual O2 sensors with Haltech gauge.
Dennis LaGrua OCT 08, 11:09 AM
If two head pipes diverge at the muffler is this really true dual exhaust? I believe that a true race dual exhaust system is totally separate containing two head pipes, two mufflers and two tail pipes. Whether a true dual exhaust system would provide any more horsepower on a 3800SC swap is an unanswered question. IMO, since the 3800 is not a high revving engine I would say that gains, if any, would be minimal.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
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