SuperSpore
OBS Enthusiast
Anyone aware of an exhaust system for 1991-1993 454 ss? It's a true dual exhaust.
Cat back system would be fine.
Cat back system would be fine.
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A detail I was unaware of, on differences of 90 vs. 91-93. Where's the O2 sensor on that setup, btw?1990 had y-pipe with single converter
1991-93 had true dual exhaust
@Nad_Yvalhosert you are correct that if there ever was a bolt on exhaust kit its probably not being made anymore. Custom exhaust is your best option now.
Never know what you might run across. A few years ago I scored an NOS Corsa catback for the Silvy SS. Still in the dusty old GM-labeled box; it was an authorized accessory offered through the dealers. Guy bought it and never installed. It sounds way better on my truck than the Magnaflow I removed..In 91' the ss went to true dual exhaust and to a 4L80e.
Yeah, I'm painfully aware of the difficulty in finding aftermarket parts. Just looking for someone that's aware of something obscure.
There's information out there, and some parts, it's a matter of the info disappearing from the interwebs.
I've got that exhaust on my Denali. Didn't know it was an authorized accessory. Sounds really good imo.Never know what you might run across. A few years ago I scored an NOS Corsa catback for the Silvy SS. Still in the dusty old GM-labeled box; it was an authorized accessory offered through the dealers. Guy bought it and never installed. It sounds way better on my truck than the Magnaflow I removed..
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Richard
No it won't. Pipe diameter is different, 2.25-2.5" for the 5.0/5.7L trucks and 2.75" for the 7.4L and 6.5 Diesel. It may not seem like much, but it will effect performance.Any catback system for a 5.7 truck will work. I currently have an old Edelbrock system on mine.