how can i identofy my transfer case - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sharpmotors · 01-29-2010, 01:41 PM

how can i identify my transfer case,my truck is a 85 k20 with a 350 and a turbo 400 trans

Mr.Chevy4x4 · 01-29-2010, 02:21 PM

If it's aluminum it's a New Process 208. If it's cast iron it's a New process 205. I'm pretty sure all of the K20's by that point came with the 208 transfer case. The 205 was only in the K30's by then. If it's the 208 there will be a round ID plate attached to it with the model (probably "NP208C"), the build date, and reduction ratio.

powerdriver 1958 · 01-29-2010, 03:38 PM

aluminum case 208 that one is easy.There are two different cast iron case transfers 203 A chain drive and 205 gear drive.Should be a tag on the side facing the rear.but here's a picture in case its gone.

Mr.Chevy4x4 · 01-29-2010, 03:58 PM

True, but the NP203 wasn't offered after 1979.

powerdriver 1958 · 01-29-2010, 04:19 PM

Quote:

Originally Posted by Mr.Chevy4x4

True, but the NP203 wasn't offered after 1979.

That's assuming an unmolested truck

01-29-2010, 01:41 PM	#1
sharpmotors Registered User Join Date: Nov 2009 Location: bridgeport,ct Posts: 63	how can i identofy my transfer case how can i identify my transfer case,my truck is a 85 k20 with a 350 and a turbo 400 trans

01-29-2010, 02:21 PM	#2
Mr.Chevy4x4 Registered User Join Date: Jul 2007 Location: Sims, NC Posts: 531	Re: how can i identofy my transfer case If it's aluminum it's a New Process 208. If it's cast iron it's a New process 205. I'm pretty sure all of the K20's by that point came with the 208 transfer case. The 205 was only in the K30's by then. If it's the 208 there will be a round ID plate attached to it with the model (probably "NP208C"), the build date, and reduction ratio.

01-29-2010, 03:38 PM	#3
powerdriver 1958 Kid's Mechanic Join Date: Nov 2006 Location: Kansas City Posts: 8,241	Re: how can i identofy my transfer case aluminum case 208 that one is easy.There are two different cast iron case transfers 203 A chain drive and 205 gear drive.Should be a tag on the side facing the rear.but here's a picture in case its gone. Attached Images

01-29-2010, 03:58 PM	#4
Mr.Chevy4x4 Registered User Join Date: Jul 2007 Location: Sims, NC Posts: 531	Re: how can i identofy my transfer case True, but the NP203 wasn't offered after 1979.



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