what cat do i need?
Thread Starter
Junior Member
Joined: Oct 2003
Posts: 68
Likes: 0
From: Pennsylvania
Car: 1983 Camaro Sport Coupe
Engine: 355
Transmission: TH350
Axle/Gears: 3.08
what cat do i need?
ok got system with a 2.75 intermediate pipe, its got a flange where it bolts to the cat, what cat do i need to use? like how big and all that stuff
Joined: Mar 2000
Posts: 43,187
Likes: 42
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
Do you have factory cast iron exhaust manifolds or headers?
Are you willing to upgrade to headers?
Are you willing to upgrade to headers?
Joined: Feb 2001
Posts: 13,748
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
2.75' is a goofy size and you won't find many cats out there in that size. Your best bet is match your cat size to a y-pipe size on the headers of your choice and then fab it up from there.
Thread Starter
Junior Member
Joined: Oct 2003
Posts: 68
Likes: 0
From: Pennsylvania
Car: 1983 Camaro Sport Coupe
Engine: 355
Transmission: TH350
Axle/Gears: 3.08
5.7 yeah i'm going to do shorty headers with y-pipe (probably hedman)
also could i just cut the flange off and make it like a normal slip on?
also could i just cut the flange off and make it like a normal slip on?
Joined: Mar 2000
Posts: 43,187
Likes: 42
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
Get the headers/y-pipe for the '86-'90 TPI single cat application. Then get the direct-fit cat CTO-9118 from Summit. Modify your cat-back to fit the cat (unless you go ahead and get a proper cat-back as well).
Thread
Thread Starter
Forum
Replies
Last Post
LT1Formula
Engine/Drivetrain/Suspension Parts for Sale
7
Oct 8, 2015 08:34 PM