LS Engine Tech: Measuring for Proper Push Rod Length
Comp Cams Push Rod Length Checker
http://amzn.to/2Bsx1zV
ARP Head Bolts (pre-04 - with the 2 shorter outer bolts) 134-3609
http://amzn.to/2iOI6QI
Here's how to measure for proper push rod length on a new build where you're changed anything in the valve train, such as cam, rockers, decked heads, etc.