Yet another push rod length question
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Teching In
Joined: Nov 2011
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From: Star City, AR
Yet another push rod length question The engine is a stock bottom end 5.3 with 212/218 highlift cam, headsmilled .030, 5 angle valve job, stock valves unshrouded, using stock head gasket. I found zero lash between 7.225 and 7.25. Took 7.25 and added 0.090 for preload and came up with 7.34 closest rods I found was 7.35. I checked my work by dropping in the checker at 7.35, tightend the rocker down till I had no more endplay and then counted the number of revolutions till the rocker bottomed out on the seat (1.25 rev). Does this sound ok?
Torque to 22ft-lbs and count the turns. Every full turn is approx .047" of preload. So if you got to 22ft-lbs when you bottomed out, you're probably close to to .060" of preload...
His measurements are close to 0.100" and the number of turns (1.25) to bottom and not 22 lb-ft comes out to 0.101 per my calculations so I would personally go a bit shorter. 7.325" might be a better choice.
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