Exhaust and Intake Pushrods, on G.M. 3.1 and 3.4 engines are different lengths. I know this is old but quite often we still see, bent pushrods and valves, when they are mixed up. Consequently, Exhaust [...]

Danny's Engineportal - Helping Solve Automotive Engine Problems
Danny Bender
Pushrods On G.M. 3.1-3.4 Engines – This Is Where Length Matters
Danny's Engineportal