Quote:
Originally Posted by Tom Goldman
Most '62-'63 PG'S that had a rear pump ,had steel front pump gears.
I save them for my customers that run over 200# line pressure.
Most S/SS transmissions run under 150# or less of line pressure and the cast gears usually will hold up in them with no problems.
You might want to check and make sure there was enough clearance between the pump tangs and the pump drive slot.
Possibly a main thrust bearing problem also.
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After taking the time to do other things, I returned to the Powerglide front pump issue. It seems that with the trans and converter bolted to the engine, quite a bit of endplay exists between the point that the converter is bottomed out in the pump and where it was when bolted up to the flex plate. I have seen spacers in some cars between the conveter tabs and the flexplate,but not here.I suspect that the converter drive slots were not engaged deep enough over the front pump drive lugs and that made the drive lugs shear off.The sudden off the gas at the finish line and the subsequent on the gas again may have been just enough to finish it off. I haven't open up the trans yet, but before that car gets run again, that endplay issue will be not a possibility. The crank endplay is around .009".Something to check out!!