Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: Cam bearings & new go faster goodies
Someone can correct me, but that bottom bearing wear is from the valve train and that leads to heads spring pressure.
You didn't mention what valve spring pressure are running , but if ifs excessive, say 160-200 valve seat pressure, you might replace them, but you may have to pull the motor for that since you need to get into the ones in the rear.
I would offer you a suggestion to drill you a hole or two into those galley plugs, this would provide better cam gear oiling.
Actually , GM did this on bbc motors long ago to keep the air out of the valve train system, where people complained of noisy lifters or rocker arms.
Opps, do I see a plug with a hole in it?
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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