SBC heads - where's the oil fill port?

[jfalesi]

Originally Posted by GRX

1) head bolt
2) Oil port
3) pushrod port
4) open hole to lifter valley
5) pushrod port
6) head bolt
7) valve cover bolt hole. That image is of Vortec head that uses center bolts. Older style mounts are on the gasket rail as seen on the bottom of the 2nd image I posted above.

Hope that helps.

Thanks GRX!