well heres my list so far
1.no other pushrods are bent (checked against known straight edge)
2. dont believe any valve to piston interference (pulled plug in cylinder and saw no metal shavings on or inside plug)
3.checked lifter and cam, (no irregular wear, lifter was just sitting in valley right to the rear of its home no damage that i could detect)
4.rockers oiling holes are in correct position, no irregular wear on rocker or shaft and side plugs are still intact
5.put lifter back in hole, put bent pushrod back in place and noticed if i pulled the cup back up to how far out of the pushrod it was sitting when i pulled valve cover (about 1/2 inch out of pushrod) it fit right up on the ball of the rocker. camshaft in this posistion for this cylinder just happens to be on the base circle where the valve would be shut
Now i dont want to assume because this is a critical problem and i need to go over every possible thing but could it be the 440 source 3/8 pushrod just flat out failed me? idk im no expert on valvetrain geometry but when i first assembled the motor everything seemed within reason, small sweep, pretty well centered on valve stem... of course it could be better but other than possibly needing more clearance for pushrod, or geometry issues i didnt see, i dont think theres anything else to it than maybe where the pushrod and the cup mate there was a failure with the higher rpms
any suggestions i may have missed?
