Well, the jury is IN. According to all of the hints you gave me it has been identified as a th400. The guy I bought the truck from said the PO told him it was 350. With all this said how should it work for me, 46/7 on s10 frame with 350 sbc. Unless others say no, I'm still going with it. Dave

1941 Chevy
"First rebuild - complete!"
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1941 GMC resting peacefully
1946/1947 Chevy Street rod on s10 frame complete
1945 GMC panel truck in line for restoration
1941 Plymouth stock complete
1941 GMC COE in restoration process
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1941 Chevy Coe uncertain future resting now