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Old 06-27-2021, 05:23 PM
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TransAm 474 TransAm 474 is offline
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Join Date: Jun 2004
Location: Cape Fair,Mo
Posts: 793
Default Pattern on Valve Tip Opinion

Hi everyone, we are measuring pushrod length today, we made a hydraulic lifter solid by stacking it with washer, we then turned the engine until lifter was on back side of lobe, adjusted stock factory length pushrod to zero lash, tightened the poly lock, then turned the engine two full revolutions and this is the pattern we got. Looks awful wide to me, but we have never measured pushrod length using factory stamped steel rockers like this build will use, its always been full roller rockers in our past builds. Is this pattern normal for a stamped steel rocker? If so, how does it look? Heads are factory 6x4, just barely cleaned up to make sure they were flat, no more than .010" taken off deck, stock length 4.98" Ferra valves, Crower 68404 springs are set up at 1.550". Camshaft is a Voodoo 704.
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1978 Trans Am
Pump Gas 461 Stroker