A Studebaker Reference Guide

How to identify cylinder head compression ratios - GM Engines


Engine type Part # Casting # Location Ratio
194 (1965) 1564874 3864888 #5 Cylinder 8.5-1
194 (1965) 1564875 3864886 #5 Cylinder 7.5-1
194 (1966) 1565707 3872704 #5 Cylinder 8.5-1
194 (1966) 1565708 3872708 #5 Cylinder 7.5-1
230 1565708 3872708 #5 Cylinder 7.5-1
283 (V8) 1564859 3814480 2nd Last Cylinder 7.5-1
283 (V8) 1564435 3795896 2nd Last Cylinder 9.25-1

Table of Contents | Chapter 7