Headers and Y pipe opinions
Joined: Mar 2000
Posts: 43,187
Likes: 43
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
A. Pros - They're relatively inexpensive, fit, have a lot of different emissions-legal applications available. CHP magazine dyno'd a 350 at 380 HP with a set of them (not sure exactly which set, though - they didn't say) with a 3" muffler on the y-pipe instead of a cat.
Cons - Y-pipe is 2-1/2" with an adapter to go to a 3" cat. One primary pipe goes over the top of the others - not sure it makes any performance difference, but looks funny. Chrome plated versions will blue and flake, they don't offer ceramic coated version (but our sponsor ACS above does).
B. Pros - Emissions legal.
Cons - they're 1-1/2" primaries, reports of fitment problems, cheaply made (and they aren't that inexpensive anymore). They're Pacesetters.
My recommendation (along with many others) is to spend the few extra dollars and get Hooker 2055's. For a TBI, you'll need a new cat as well - get a direct-fit '86-'90 TPI single-cat application cat. Then you'll need to adapt your cat-back to the cat, or get a cat-back for the same application.
Cons - Y-pipe is 2-1/2" with an adapter to go to a 3" cat. One primary pipe goes over the top of the others - not sure it makes any performance difference, but looks funny. Chrome plated versions will blue and flake, they don't offer ceramic coated version (but our sponsor ACS above does).
B. Pros - Emissions legal.
Cons - they're 1-1/2" primaries, reports of fitment problems, cheaply made (and they aren't that inexpensive anymore). They're Pacesetters.
My recommendation (along with many others) is to spend the few extra dollars and get Hooker 2055's. For a TBI, you'll need a new cat as well - get a direct-fit '86-'90 TPI single-cat application cat. Then you'll need to adapt your cat-back to the cat, or get a cat-back for the same application.
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