I don't think TDC changes by installing a new cam. TDC should be marked with "UDC" and a triangle. The valves may open differently but TDC stays the same.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!