SBC cylinder head identification
m (→"Fuelie" heads) |
m (→Diagram of some common head ID castings) |
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| − | ====Diagram of some common head ID castings==== | + | ====Diagram of some common small block Chevy head ID castings==== |
[[File:Sbc head casting id.jpg]] | [[File:Sbc head casting id.jpg]] | ||
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*'''O-''' “Saddle” and vertical bar c/n 416. Late-model 305, conventional perimeter valve cover, intake port not restricted, lightweight, 57 cc nominal chamber volume. Hardened exhaust seats. | *'''O-''' “Saddle” and vertical bar c/n 416. Late-model 305, conventional perimeter valve cover, intake port not restricted, lightweight, 57 cc nominal chamber volume. Hardened exhaust seats. | ||
| − | *'''P-''' Double (Captain’s) bars c/n 193. Used on TBI equipped engines. Mid-1980- up style centerbolt valve cover. Has restrictive vane cast in intake port to induce swirl/turbulence. Not usually recommended for high RPM performance applications unless serious port work is done. Hardened exhaust seats. | + | *'''P-''' Double (Captain’s) bars c/n 193. Used on TBI equipped engines. Mid-1980- up style centerbolt valve cover. Has restrictive vane cast in intake port to induce swirl/turbulence. Not usually recommended for high RPM performance applications unless serious port work is done. Hardened exhaust seats. |
====SBC heads to avoid==== | ====SBC heads to avoid==== | ||
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