[zraffz]

So I switched from the stock Vortec lifters to the LS7 lifters (which are a hair taller). I had a new set of LS7 lifters laying around and an old set. I checked to make sure they were the same size, I took apart an old LS7 lifter and cut a bolt to fit inside it - filing it to final size. Now the lifter has no play inside it.

I remeasured, got a bit closer to having the mark on the center half way through the cycle and came up with a 7.35" or 7.4" pushrod. I was almost expecting to be under the 7.2" stock size since the head gasket is significantly thinner but these new rocker studs are physically a hair taller at the seat. Think now I'm getting the results I wanted but I'm going to have someone come over and double check my work.