Tick Tick goes the magnum.

Bobzilla said

Are the heads, block, and head gaskets all original? Maybe the stock pushrods will work after all. It sounds like the length you added was just enough to hang some valves open a tiny bit.
When you say the rockers were loose with original pushrods, were they flopping around, able to move the pushrods up and down, or do you mean you were able to push down on the rocker arm and it was “springy” on the pushrod side? You will be able to easily compress some of the lifters, so it’s easy to get a false measurement that is too long. Easy to see with intake off, but more just feeling it when intake is on.

Click to expand...

but if they were to long to hang the valves open why do i hear lifter chatter? the stock push rods had a huge amount of play. Im thinking like 0.80-1.00 play.

I did have some 7.000 Pushrods laying around and tried them the valves wouldnt close resulting in no compression.

As of now i tried 6.900 (stock) Pushrods being way too short,
7.000 being way too long
6.950 working but alot of chatter when reving. (measured incorrectly With no preload added)

Going to use the push rod checker again on on #1 cylinder when the valves are closed get that measurement and add 0.25 to it. Going to do it on both intake and exhaust.