I had my 62-235 rebuilt several years ago , new lifters, cam, pistons (bored .030" over), oil pump, crank was OK. after 3 or 4 years the hyd. lifters started bleeding down when it sat for a while. I tried changing one at a time trying to identify which one or ones were sticking down. Finally I changed all of them with Mellon lifters. I guess my engine builder used cheap Chinese lifters. So now from the warm up heavy ticking in the past I guess the top of the push rods got weak. This is the second one that broke the same way, one intake and this time a exhaust. The bad part is my truck is a COE. I've spent a lot of time in the passenger side door way!
