Trans swap ?'s NP435 toTH350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Beejer · 12-26-2009, 05:38 PM

I have a 1969 GMC 1/2 ton long bed. It has a 350 engine, 4 speed manaul transmission NEW PROCESS NP435 a popular low gear ratio 4x4 transmission. GM, Ford, Dodge, and International all used this transmission in their earlier years. Although GM rarely used this trans, I happen to be one of them. I'm thinking of swapping the NP435 for a TH350 transmission. My question is what kind of process am I looking at? Besides the new bellhousing and transmission what else needs to be altered? Any help would be great!

Thanks,
Beej

12-26-2009, 05:38 PM	#1
Beejer Registered User Join Date: May 2009 Location: Queen Creek, Arizona Posts: 7	Trans swap ?'s NP435 toTH350 I have a 1969 GMC 1/2 ton long bed. It has a 350 engine, 4 speed manaul transmission NEW PROCESS NP435 a popular low gear ratio 4x4 transmission. GM, Ford, Dodge, and International all used this transmission in their earlier years. Although GM rarely used this trans, I happen to be one of them. I'm thinking of swapping the NP435 for a TH350 transmission. My question is what kind of process am I looking at? Besides the new bellhousing and transmission what else needs to be altered? Any help would be great! Thanks, Beej __________________ 691/2 ton long bed



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