| Cyl. Engine Bore | Years Comp. Ratio | NOTES: | Part No. Sizes | Rings | O.E. Assy. No. | O.E. Casting No. | Head Shape |
V8 318 |
1957-66 |
Flat head with two valve reliefs. |
1228 |
2-5/64 |
1818597 |
1821180 |
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V8 318 |
1963-78 |
Truck premium engine. Flat head piston replacing both cup and flat head O.E. pistons. |
1278 |
2-5/64 |
2525000 |
2406895 |
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V8 318 |
1967-94 |
Flat top with four valve reliefs. 1973 and later press fit, no lockrings. 1991 and later use early style rings. |
1266 |
2-5/64 |
2808405 |
2536185 |
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V8 323 |
1942-50 |
Flat head. |
1280 |
2-3/32 |
1241622 |
871345 |
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V8 340 |
1968-71 |
Flat top with four valve reliefs. Piston may be used in either left or right cylinder bank. |
1267 |
2-5/64 |
3004516-7 |
2899479-80 |
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V8 360 |
1971-81 |
Flat head. |
1273 |
2-5/64 |
3549366 |
3418919 |
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V8 360 |
1971-92 |
3.13" dia. head recess .05" deep. Thru 1992 trucks. |
1279 |
2-5/64 |
3549366 |
3418919-20 |
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V8 360 |
1993-96 |
Trucks. Rectangular head recess .070" deep. |
3222** |
2-1.5mm |
4713879 |
63006045-AM |
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