Factory exhaust size?
Thread Starter
Supreme Member
Joined: Dec 1999
Posts: 1,934
Likes: 1
From: Calgary
Car: 89 Formula
Engine: 350
Transmission: TH 700R4
Axle/Gears: 3.27
Factory exhaust size?
What's the diameter of the stock intermediate pipe for an 89 350 TPI?
Any other specs would be helpful if you know
thanks
Any other specs would be helpful if you know
thanks
Joined: Oct 2001
Posts: 12,230
Likes: 1,157
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Factory exhaust size?
I think mine was 2 3/4" tail pipes 2 1/2
Member
Joined: Sep 2007
Posts: 229
Likes: 1
From: Alexandria, VA
Car: 1988 Iroc-z28
Engine: 5.7 350
Transmission: 700R4
Axle/Gears: 2.77
Re: Factory exhaust size?
I have a 88 350 and i'm pretty sure it's a 2.5 Thats what I bought my cutout for anyway. If you make a template out of cardboard of a half circle with the diameter of 2.5 it's pretty easy to measure it.
Last edited by Avernus; Apr 29, 2008 at 01:53 PM.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Factory exhaust size?
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