Thermoquad Carb ID

DA4AD said
Which is??????

According to my sheet you were correct if you are talking about a 73 340 MT

Swinger340Canuc said
TQ6138S - standard trans carb, TQ6139S - automatic trans carb

My sheet says the 6138S is correct for a 72 340 MT and the 6139 for a 72 340 auto. I think he was referring to a 73 model year.

Possibly the confusion came in from the 2 middle numbers being transposed from 1 year to the next?