SBO 350 compression??

GoldOlds · 06-08-2007, 08:47 PM

What's the absolute lowest compression ratio the Olds 350 had from the factory in '69? The only ratios I can find from that year are 9.0:1 and 10.25:1. Was there anything in between for the 350 that year? Or lower?

- Gold Olds

Jokers69 · 06-10-2007, 01:26 PM

If I'm reading the chart right, the Chassis Service Manual lists 3 compression ratios for the 350.

9.00 with a 2 bbl. designated as QI with a manual tranny, QA, QB or QJ with auto

10.25 with a 4 bbl. designated as QV with a manual, QN or QP with auto

10.50 with a 4 bbl. designated as QX with a manual, no auto offered

at the bottom of the page it also says V-8 export options include a 8.3 compression ratio available in 2 or 4 bbl.

06-08-2007, 08:47 PM	#1 (permalink)
GoldOlds Senior Member Join Date: May 2007 Location: Chatham-Kent, Ontario Posts: 117	SBO 350 compression?? What's the absolute lowest compression ratio the Olds 350 had from the factory in '69? The only ratios I can find from that year are 9.0:1 and 10.25:1. Was there anything in between for the 350 that year? Or lower? - Gold Olds

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06-10-2007, 01:26 PM	#2 (permalink)
Jokers69 Senior Moment Join Date: Aug 2006 Posts: 203	If I'm reading the chart right, the Chassis Service Manual lists 3 compression ratios for the 350. 9.00 with a 2 bbl. designated as QI with a manual tranny, QA, QB or QJ with auto 10.25 with a 4 bbl. designated as QV with a manual, QN or QP with auto 10.50 with a 4 bbl. designated as QX with a manual, no auto offered at the bottom of the page it also says V-8 export options include a 8.3 compression ratio available in 2 or 4 bbl.