Posted by MoparNorm on Sunday, September 24, 2006 at 3:08PM :
In Reply to: Too lead or not to lead??? posted by Dan Shockley on Sunday, September 24, 2006 at 2:51PM :
A motors, '59 to '67 have valve rotators with hardened valve surfaces but not hardened seats, results are varied between no damage to severe damage, so I'd speculate that it depends upon the altitude of the truck and the driving habits of the driver.
MN
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