LS-EXUAL
VS V6 IRS stock exhaust onto a 304.....
Will it fit? Need to throw one on there for a decibel level test for an EPA notice. Sure, it will drive like shit, but will the V6 exhaust fit provided it's off a VS IRS V6? And chances are, will it pass?
Originally Posted by wikky
NO it wont fit
NEVER LATE IN A 355ci
Found this thread, but no definite answers. You would think that the cat back would be the same.
keep 2.5" v6 zorst when i go to v8?
Of course it will fit a VS is a VS they are all the same
On series II and '96 update VS's at least the V8 and V6 systems are different; dual intermediate mufflers on V8 vs single on V6 and the cats are in different places. = no fit.
LS-EXUAL
All good, i found a stocko VS V8 exhaust complete with all mufflers for $100. Any ideas what a rough decibel level would be on a stock VS V8 exhaust?
If it's stock it should pass. Depending on the muffler condition.
LS-EXUAL
Yeah the bloke reckons it's all in good nick, just a bit dirty. I'm keeping this as an investment for the future, just in case
Exhaust Guru
The VS V6 has a different flange on the rear of the cat than the V8 and it's in a different spot. So no, it won't fit.
LS-EXUAL
Cool thanks mate, managed to pick up a complete VS V8 factory exhaust for $100, just gotta pick it up saturday, i hope to god it passes. It's got both mufflers on it, no rust or holes etc.
LS-EXUAL
Ok just picked up a VR V6 IRS Statesman exhaust to shut it up. What parts do i need to cut and weld to make it fit?
Well use a VR one then
I had a stato one on mine it needed like a inch or two cut out of it, that's all
LS-EXUAL
Wicked! That's good news then, it is a V6 exhaust, and it's gonna drive like a turd but it will be very quiet i'd imagine.
Exhaust Guru
The V6 and V8 factory exhausts were actually the same on the VR's, so it won't make any difference....
Cut a bit out in the straight bit between the flange and the first muffler. Does it have two front mufflers?
LS-EXUAL
It's got the centre muffler and rear resi......
Lined it up against my 3" exhaust that's on the car, i know it's a VERY rough guide, but it seems to be almost EXACTLY the same length as the current one that's on there.
mine has a stato exhaust on as well. had to cut a similar amount just before the pipes go into the first mufflers after the cats
i was fooled by that as well. bolted it up and was way off. had to extend the rear pipe out the back a bit as well
1995 Manual HSV Clubsport
Wade Cam :: 9.2:1 CR :: Pacemaker headers :: Twin 2.5" Exhaust :: VT Brakes
1991 Supercharged VN Berlina
9 PSI SC14 Intercooled :: Genie headers :: Twin cats :: HM Twin 2.25 exhaust :: 3.45:1 LSD
LS-EXUAL
Hmmm, there is a fair bit of pipe coming out of the resi (the tip), would it work just cutting heaps of that off once bolted up? Or does some NEED to be cut out further back as well?
the back end shouldnt matter too much hopefully, it just means it wont come out to the bumper all the way. just hope the rear muffler bracket can reach for the exhaust hangers. since its only for EPA, you dont need to be too concerned if its a bit short at the back
1995 Manual HSV Clubsport
Wade Cam :: 9.2:1 CR :: Pacemaker headers :: Twin 2.5" Exhaust :: VT Brakes
1991 Supercharged VN Berlina
9 PSI SC14 Intercooled :: Genie headers :: Twin cats :: HM Twin 2.25 exhaust :: 3.45:1 LSD
LS-EXUAL
If not, i'll run it down to HP and get Barney to stuff around with it a bit.
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