Ummmm this must have been common for this engine. I have a 402 (June of 71) and it had several push rods bent as well. Some of the cam lobes look rounded or wore on the edges quite a bit. One of my valves was stuck open and some lifters are stuck.
 
Has anyone had any comments from engine builders on this? I am about to put mine in for a rebuild at a speed shop. Although the guy at the speed shop didn't seem to think he'd have any problem rebuilding it, I sure wouldn't like for this to happen again anytime soon!
 
The guy at the speed shop said he's had good luck rebuilding 402's, but an occasional bad luck rebuilding 396's. Something about the block cracking when boring it. Did they change the block at all when they went to 402? Put in a cheaper cam or something?
 
                                                                          Steve
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 HI i have a 402 that I took apart, all the intake push rods are bent, but
none of the exhaust, any ideas what would cause this?? the valves look fine
(haven't kissed the pistons) and the rest of the engine looks ok except it
was pretty sludged up.
thanks !
H


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