Hey guys, my older brother just got some spoon cams into his P73 head, and he was wondering, what timing would be best for these cams? Prior to getting the spoon cams, he had a timing of 17 Deg BTDC, and was running great with it, but since the spoon cams have a longer duration than the stock ITR cams, we both assumed that the timing would need to be changed. So if anybody can shed some light onto the matter for me, it would be greatly appreciated.

 

Only way to do it correctly is on the dyno.

 

Keep the timing where it is, strap on an air/fuel management and adjust for properair/fuel ratio, drive straight to the dyno.