[big deuce]

Casting date on mine is 1978...they didn't mention in the video that there are clearances in the lower end of the block for more stroke than the 4" crank. I didn't realize the exhaust studs were wet... I have read to leave the studs in, don't even think about trying to remove them if you get one with exhaust studs. I just got 10mm nuts for the metric end of the stud. The timing cover has a thrust bushing with a locknut to prevent cam walk.