Full Exhaust Sytem
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Junior Member
Joined: Oct 2003
Posts: 54
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From: Oklahoma City, OK
Car: 1992 Heritage Z28
Engine: 5.7l TPI
Transmission: A4
Full Exhaust Sytem
My car is a duel cat car. If i get the hedman 68470 headers and the y-pipe, a high flow cat, and a cat back system for a single cat car, will this all bolt up, or will i still have to have an exhaust shop put extra pipe in there.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It will all bolt up as long as the parts are intended for '86-'90 TPI single cat application, and the cat is direct-fit.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You do know that Hedman makes 68491 for dual-cat application.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
They'll bolt to your existing cats.
They're $330 from Summit, but that's a lot less than a full exhaust system. Personally, if I had a dual cat system, I'd be inclined to keep it if at all possible. But, I can understand the motivation for the conversion to single.
They're $330 from Summit, but that's a lot less than a full exhaust system. Personally, if I had a dual cat system, I'd be inclined to keep it if at all possible. But, I can understand the motivation for the conversion to single.
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