4x4 Swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70Yeller · 01-12-2005, 02:51 PM

I asked this question on the parts board and didn't get a lot of response. What all 4x4 frames will a 67-72 truck bolt up to. I know obviously 67-72, but are there any other frames these trucks bolt up to with little or no modifications.

**JIMs70GMC** · 01-12-2005, 06:51 PM

A couple members have use 73 and up frames. The body mounts have to be modified/moved.

dregs454 · 01-12-2005, 11:47 PM

a question about this, don't the 67 - 72 4x4 frames come with the tougher drivetrain anyways? like NP205 and strong axles and such?
well, i guess you would also have to think about getting a 71 or 72 for the disks... and hope you get one with power steering.

Mudder · 01-13-2005, 06:40 AM

Using a newer frame does have some advantages and some disadvantages. Frame will need to be shortened a little. Use the old body mounts. If you can get a high hump you wont need much body lift. Believe the frames are a little wider in the rear of the newer trucks allowing the use of the newer Blazer tanks. You get disks with the front axle. I have pictures of all the mounts/etc if you decide to go this route. It would be easier using a 67-72 chassis, but then again I do believe there are some things about the newer frames that are better.

01-12-2005, 02:51 PM	#1
70Yeller Registered User Join Date: Dec 2004 Location: Stillwater, OK Posts: 28	4x4 Swap I asked this question on the parts board and didn't get a lot of response. What all 4x4 frames will a 67-72 truck bolt up to. I know obviously 67-72, but are there any other frames these trucks bolt up to with little or no modifications.

01-12-2005, 06:51 PM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	A couple members have use 73 and up frames. The body mounts have to be modified/moved. __________________ 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

01-12-2005, 11:47 PM	#3
dregs454 Killin' Time Join Date: Jul 2002 Location: Calgary, Alberta Posts: 221	a question about this, don't the 67 - 72 4x4 frames come with the tougher drivetrain anyways? like NP205 and strong axles and such? well, i guess you would also have to think about getting a 71 or 72 for the disks... and hope you get one with power steering. __________________ NEED CORVETTE 1972 GMC C20 350, SM465, HEI Dynomax headers and 2.5" duals

01-13-2005, 06:40 AM	#4
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Using a newer frame does have some advantages and some disadvantages. Frame will need to be shortened a little. Use the old body mounts. If you can get a high hump you wont need much body lift. Believe the frames are a little wider in the rear of the newer trucks allowing the use of the newer Blazer tanks. You get disks with the front axle. I have pictures of all the mounts/etc if you decide to go this route. It would be easier using a 67-72 chassis, but then again I do believe there are some things about the newer frames that are better.



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