catalic converter
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Supreme Member
Joined: Apr 2003
Posts: 1,265
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From: Hill AFB, Utah
Car: 1988 Trans Am GTA Notchback
Engine: 305ci, 5.0L, TPI, HO
Transmission: Borg Warner T5 5-Speed
Axle/Gears: 9-Bolt Positraction Rear w/3.45 Grs
Cat
Does anyone know what size the inlet and outlet are on a stock Cat for an 87 Formula?
Last edited by GTA4ME; Jul 23, 2004 at 11:41 PM.
Joined: Jan 2004
Posts: 2,963
Likes: 377
From: Las Vegas
Car: 1987 Formula (original owner)
Engine: 305 TPI
Transmission: T5
Axle/Gears: 9-bolt/3.45
If it's the LB9 or L98, it's 3" in and 3" out. Not sure about the LG4 or if a Formula could even have an LG4.
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