Posted by Vaughn [172.68.143.171] on Sunday, August 27, 2017 at 12:47:31 :
In Reply to: Re: NP420 transmission identification posted by Todd F [108.162.246.254] on Sunday, August 27, 2017 at 11:44:45 :
The numbers cast on the side will identify it as a NP420, but there are several NP420's with different casting numbers depending on the vehicle application. For example, the M37 early NP420 is case number 88671 thru 1954, which has the same mounting ear pattern as the non-syncro tranny's and it later change to a different number. I don't have data specific to your tranny's number.