what kind of lifters and rockers are you using ?? do you need ball and ball , cup and ball your machinest might borrow you his measuring tool, or you can rent them from the cam maker or jeggs or summit . good luck with your engine . I just had a catisrafic failer in mine and had to pull and build a new 1 . what a bummer this year has been for me . it all started with the longest winter ive ever seen and all this rain and tornado"s have been hell . I was bunning I lost a motor a lotta people lost there houses ,cars ,farms ,lives and a few towns hope your all safe out there gl