Originally Posted by Hotrod Lincoln
Why get anal-retentive about a 0.01 turn difference in a gear ratio? It's obvious that both gearsets exist in Eaton third members. For whatever reason, GM used both tooth counts at various times.
Jerry

This is exactly my point, albeit much more succinctly expressed... They both existed. The original quote from Denny that "they never existed" to me was counter productive. It's semantics at best when you consider that the goal of the OP was just to get some higher gears for his rig. His quote could be enough to put someone off of finding a solution. I find it sad that someone with as much knowledge as he obviously has would not be more constructive and helpful.


1956 GMC 100 NAPCO Deluxe
1955.1 Chevy 3600 NAPCO
1954 Chevy 3600 NAPCO