g741.org

Is there a difference in the syncros for the early and late model np420 trans?

Thanks,

CT

Yes Ct there is . From what I was told the early model (88950) and later model (NP420) as a unit are interchangeable. But the insides are not, they are totally Different and are not interchangeable...You can double check with the site below. Also from what I understand a NP420 transmission out of a Civi Power Wagon will not fit in our trucks.

http://www.jobrated.com/index.html

Sal

Sal,

Thanks, I saw a set on ebay and was trying to find out if they would fit my old trans. Just looking at future replacement parts. The ebay ones are for the late model.

CT

I Know I seen them also. If your interested AB Linn has a set of gears for the early transmission. But No syncros.

Sal

For a couple of years, I was collecting early transmission (88950) parts, but I never did find any synchros. Unless you're doing a restoration for as-built accuracy, the later NP420 is a better transmission, and parts are more readily available. A lot of the first generation M37s apparently received NP420s when their 88950s failed, so an NP420 in a 1954 or earlier M37 would not have been unusual while still in service.