TH400/NP205 swap to 208? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

454_72_4X4 · 11-28-2005, 11:01 AM

I'm just wondering what all it would take to swap out the 205 in my wife's 1980 K20 to a 208.
The 205 is the "figure 8" type bolt pattern.
Will the 208 and it's adapter just bolt on to the existing th400?
Also, would there be any driveshaft modifications needed? (The 205 that's in it now is the rear slip yoke not the fixed yoke/slip joint driveshaft.)

I know it sounds like a strange swap, (205 to 208...why would ya do that???), but I'm going to swap the 205 out of her truck into my 72 behind a NV4500 so I have to put something back into her truck.

11-28-2005, 11:01 AM	#1
454_72_4X4 Registered User Join Date: Apr 2004 Location: N.E. MO Posts: 1,749	TH400/NP205 swap to 208? I'm just wondering what all it would take to swap out the 205 in my wife's 1980 K20 to a 208. The 205 is the "figure 8" type bolt pattern. Will the 208 and it's adapter just bolt on to the existing th400? Also, would there be any driveshaft modifications needed? (The 205 that's in it now is the rear slip yoke not the fixed yoke/slip joint driveshaft.) I know it sounds like a strange swap, (205 to 208...why would ya do that???), but I'm going to swap the 205 out of her truck into my 72 behind a NV4500 so I have to put something back into her truck. __________________ 72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey



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