Determining pushrod length

[ed cougar]

Thats a hard question, pushrod length depends on several things: rocker arm type, cam lobe, deck height, how much the head was milled, rocker stand height. Anyhow you use an adjustable pushrod (tool) and cycle the engine slowly and adjust to get the best geometry, I let my engine builder figure all that out and he showed me things like scrub angle that I would have never looked at. I don't know much about what lifters work the best, but I used solids because my freind's hydraulic liftered cj spit one out of it's bore at high RPM and the engine lost oil pressure- thats one thing you don't have to worry about with solids because the lifter galleys are plugged. I'm useing Le-Mans rods with ARP bolts, had to grind little notches in the block for bolt head clearance. The rods are heavier so the motor isn't quite as fast but more durable. There are some realy smart FE guys out there and I'm sure you'll get some better advise than i can give you, good luck see ya.