Re: What if the lockup torque converter clutch is the cause of the main bearing problems?
Posted by Jack Vines On 2016/10/20 12:03:07
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No main bearing problems with the stick shift transmissions??? So i very much doubt that either the SBC main failure had anything to do with the lock-up or overdrive.
The '56 Studebaker Golden Hawks with the standard transmissions are more likely to drop a valve or crack a piston from being over-revved.
Quote:
As for the SBC reaar main wear we have to keep in mind that GM went to shit over the last 20 years. So without some indepth analysis of the modern SBC vs the first 35 to 40 years of SBC and any changes (incl metalurigacal) then no determination can made about the wear.
The analysis of SBC main bearing wear comes directly from the American Engine Rebuilders Association and is confirmed by the local rebuilder to whom we sell core engines. They build a dozen SBCs every week, so they see the post-mortem when cleaning the core, so it's not debatable.
jack vines
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