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02-10-2015, 12:18 AM
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#1 |
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Registered User
Join Date: Feb 2015
Location: Paso robles Ca
Posts: 4
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72 k20 4 speed to 700r4
How much different are the trans mounts from manual to automatic
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02-10-2015, 03:05 AM
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#2 |
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Junk Yartist
Join Date: Jul 2009
Location: Greeley, CO
Posts: 2,203
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Re: 72 k20 4 speed to 700r4
Just location of the holes, if I recall correctly, for the 4x4 SM465 and TH350. If you are going to a 700R then you will have to move the mounts either way. This is assuming you are using the NP205. I have a 700R that I am working on right now that adapts to the factory 10 spline NP205. It uses a tail shaft from Advance Adapters and the TH350 to NP205 adapter.
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-Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205 |
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02-10-2015, 09:02 AM
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#3 |
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user # 2756
 
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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Re: 72 k20 4 speed to 700r4
I just went the opposite direction, 700r4 to sm465. depending on the adapter used the tranny cross member will have a hump in the middle or be flat across. if you use the th350 adapter they should be all flat and the cross member will be the same, just drill some new holes in the frame.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm 
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02-10-2015, 09:13 AM
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#4 |
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Registered User
Join Date: Feb 2015
Location: Paso robles Ca
Posts: 4
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Re: 72 c20 4 speed to 700r4
Not just relocating the holes. My truck came with a 350 and a 4speed with a 203 transfer case I beleave and I'm going to a 383 with 700r4 and 205. I just boxed the frame in yesterday for the most
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