Originally Posted by crenwelge
Jerry, The 318 without OD uses a different mainshaft than the 319 with OD.

Originally Posted by Hotrod Lincoln
The only difference in a SM 318 transmission case and a 319 is one hole drilled for the lockout pin that disengages the OD when reverse is selected.
Jerry didn't say there is or isn't a different mainshaft.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.