What is the stock compression ratio?
Thread Starter
Junior Member
Joined: Oct 2007
Posts: 2
Likes: 0
From: Oceanside, CA, USA
Car: 1988 Chevy Camaro IROC-Z
Engine: 5.0L TPI
Transmission: 5 Speed Manual
What is the stock compression ratio?
Hi,
I have a 1988 Camaro IROC-Z 305TPI 5spd.
I need to know the compression ratio for a custom chip from Hawk's Third Gen.
I know that on this website it says the stock compression ratio is 9.3:1. But I have seen different numbers other places. Does anybody know what it is?
Thanks.
I have a 1988 Camaro IROC-Z 305TPI 5spd.
I need to know the compression ratio for a custom chip from Hawk's Third Gen.
I know that on this website it says the stock compression ratio is 9.3:1. But I have seen different numbers other places. Does anybody know what it is?
Thanks.
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
The info on this site seems pretty reliable.
Hawks should know if it's stock, anyway.
Hawks should know if it's stock, anyway.
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: What is the stock compression ratio?
I thought the TPI 305s were 9.5:1 (same shortblock as the L69) and the 350 TPI was 9.3:1.
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