More help with identification - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Ridgeback** · 11-13-2010, 01:05 AM

Does anyone recognize this transmission mainshaft. I have no part number but do know it is Chevrolet/GMC. Perhaps 50-60 series trucks? Thanks.

raycow · 11-13-2010, 02:25 PM

I can only tell you that its not one of the common 4 speeds like a SM420 or SM465. It's not a T89 either. NP435 is a possibility, but I haven't seen one of those out of the transmission to know what it looks like for certain.

I'm going to stay subscribed to this one, just in case someone comes up with the answer.

Ray

11-13-2010, 01:05 AM	#1
Ridgeback Senior Member Join Date: Mar 2003 Location: Virginia Posts: 809	More help with identification Does anyone recognize this transmission mainshaft. I have no part number but do know it is Chevrolet/GMC. Perhaps 50-60 series trucks? Thanks. Attached Images

11-13-2010, 02:25 PM	#2
raycow Registered User Join Date: Mar 2003 Location: San Francisco, CA USA Posts: 2,454	Re: More help with identification I can only tell you that its not one of the common 4 speeds like a SM420 or SM465. It's not a T89 either. NP435 is a possibility, but I haven't seen one of those out of the transmission to know what it looks like for certain. I'm going to stay subscribed to this one, just in case someone comes up with the answer. Ray __________________ Live more responsibly. Eat lower on the food chain. Eat vegetarians. Last edited by raycow; 11-13-2010 at 02:27 PM.



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