| quote | Originally posted by Patrick: Part of the reason why it sounded (and still sounds) good, is because I did remove the ridiculous restrictions in the factory exhaust logs. I have no idea what Pontiac was thinking leaving those restrictions in place. Shoddy fabricating is all I can figure. |
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I bought a set of hogged out exhaust logs from Ed Parks many many years ago... and that's what's on my Fiero right now (in storage). I bought a set of stainless shorty headers from WCF about a year ago. It came with a matched stainless Y-Pipe for a Getrag V6 along with EGR... so we'll see when I eventually get the car in my garage and sorted, what that sounds like. I'm nervous I went too big. I went with 2.5" exhaust from the Y-Pipe all the way to the muffler.
Most of the exhaust size charts I see show that I'm on the high-end... meaning that I don't really need 2.5", but that it's not
too much. Somewhere between 2.25" and 2.5" would have been better. It'll be going with a 3.4 V6/60 which I'm going to really work over. My goal is to take it to a really, really competent machine shop that can balance everything to an obscene level, even though it won't produce power above ~5,700. I'm going with an H272 cam and 1.52:1 roller rockers, the ARI Racing ported cyl heads with the stainless swirl "tulip" valves. I'm also going with the 3.4 DOHC pistons (so ~9.7:1 compression), plus windage tray and everything I can possibly find. Finally, I'll have to do the DAWG mod on my already bored Darrel Morse intake plenum. We'll see... but I have to make ~200hp for the 2.5" exhaust to make sense... haha.
I've already got a stainless 2.5" catalytic converter that bolts in to the exhaust... but I need to pick a muffler. Goal will be to make the engine look as absolutely stock as possible, minus the obvious fact that it'll have shorty headers.
I'm going for something that would probably do mid-14s... but I'm in my mid 40s now... so I won't be doing any burnouts any time soon. I just want something that can really go in gear fast. I also bought a 5-Speed Getrag from a Quad-4 W41... so it has the crazy gearing.