Quote Originally Posted by jerry clayton View Post
two items come to mind that haven't been mentioned---Bolts that hold cam plate on may have heads that are too thick to clear the gear--- some aftermarket cam gears are wider and hit block area above the oil galley area, plug you put into galley may not be deep enough causing back of chain/gear to hit it,and also some strokers have interfernce at where the oil pump mount area is on block(counter weight hits.

also ---fuel pump eccentric????

ok maybe more than 2 but I'll only charge for two!!!!!
well if that was so that would make for bad things as the timming set would be hitting cutting in the back of the cam gear making iron as well as you may have seen this when you TQ the cam bolt up the gear would of only turned 1/2 way and hit the bolt ?? or not at all . but if so you would have had a false TQ read on the cam bolt and would in time make the cam gear loost and you would have a loose chain or the added load would work your chain set making it loose