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350 comp ratio?

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Old

Oct 21, 2006 | 01:57 PM

#1

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Joined: Jun 2006

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350 comp ratio?

whats the compression ration on a 86 350 non roller?

Old

Oct 21, 2006 | 02:09 PM

#2

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Joined: Apr 2004

Posts: 1,077

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From: Denver, CO

Car: cleanest '86 sport coupe around!!

Engine: 355ci twin 66mm turbos on e85

Transmission: built rmvb th400 w/ t-brake

Axle/Gears: 3.23

anywhere from 8:5:1-9:5:1 depending on the type of motor....LB9,LG4 etc.

Old

Oct 21, 2006 | 02:10 PM

#3

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it came out of a 86 chevy pick up 4x4

Old

Oct 21, 2006 | 02:36 PM

#4

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Joined: Sep 2001

Posts: 6,111

Likes: 53

From: Ontario, Canada

Car: 1988 Firebird S/E

Engine: 406Ci Vortec SBC

Transmission: TH-350/3500stall

Axle/Gears: 7.5" Auburn 4.10 Posi-Traction

remove a valve cover and look for the head casting number.

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