Hi Guys,

Well after the last post I had, we ordered a full rocker/shaft/hold down kit from Harland Sharp for this engine. Just a breakdown, its a 1970 340 block, with untouched X heads. The engine owner purchased a Howards hyd roller cam and retro fit lifters. When we started to measure for pushrod length, we realized that the pushrods have some pretty severe clearance issues. Maybe this is normal for a set up like this, but it looks like the pushrod hole in the head would be much more effective if it was oval and not round. It's possible the pushrod cup in the lifter is a bit higher than oem, and if so that might account for some of the clearance issue, but even if you simulate the cup being deeper, there still will be problems. I guess I'm posting to see if you Guys have run into this before. We purchased the rocker kit from Mancini's, they were unaware of ever hearing anything like this before.
Thanks!