The pin on that rear plug retains the rear bushing assembly. It's normal. If your 1948 tranny didn't have that plug with the pin on it, it's the wrong one that someone has likely changed.


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.