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The Official 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 8
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