Quote:
Originally Posted by BILL TAYLOR
My engine guy told me that Jesel experimented with roller cam bearings and the negative harmonics were real bad. That was quite a few years ago, maybe someone found a way to correct?
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DING DING DING We have a winner. A few years ago I talked to one of the guys at Grumpy Jenkins shop and they said it was night a day difference between Roller cam bearings and using babbit as roller cam bearings produce a lot of unwanted harmonics.
It takes more power to move all those needle bearings VS the cam sliding on a film of oil.
I blue print bore a lot of blocks for 55MM cam journals for other shops and builders babbit seems like the way to go. Also machine some of the OEM 350 blocks to 2.120 and use the GMP-1 cam bearings for BBC journals.