help with year of 4x4 chassis - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tully · 02-12-2005, 10:13 AM

I have a 3/4 ton 4x4 chassis under a 71 GMC 4x2 body. I am not sure of the year of the chassis, it has disc brakes, hub size for rims are 4 3/4" (see pictures), and the front leafs are 3" wide. I posted this in the 4x4 board too but I don't know if you all check that board.

Mudder · 02-12-2005, 01:26 PM

The same guys that will answer you over on the 4x4 fourms will answer you here.

Actually they dont like us 4x4 guys over here on their 67-72 board hehe Thats why Josh made us our own little place on the web over on the 4x4 forums.

Robert1970C20rstbukt · 02-12-2005, 01:30 PM

There is a number stamped on the left front frame rail, near the power steering pump. It is part of the VIN number but I think it should tell you.

Rod · 02-12-2005, 02:24 PM

Look in the area on top frame rail on drivers side near /just back of the steering box. Post me the numbers and letters there.

Tully · 02-12-2005, 05:23 PM

Rod, there are no numbers where you indicated on this chassis, but I looked on my 72 and they are right where you said. I think the PO put the 3" springs on because the front spring mounts and the shackles are bolted on. What is the first year for disc brakes?

Robert1970C20rstbukt · 02-12-2005, 09:18 PM

Is it just me or does that rear axle hub look like a FURD hub??? All the 3/4 and 1 ton axle hubs I've seen on these trucks are smooth and round, this one has ridges cut into it. I could be wrong but it's just something I noticed.

**JIMs70GMC** · 02-13-2005, 07:58 PM

That second pic is of a 14 bolt rear. 71 is the first year for disc.

02-12-2005, 10:13 AM	#1
Tully Registered User Join Date: Jan 2005 Location: Hiles, WI Posts: 42	help with year of 4x4 chassis I have a 3/4 ton 4x4 chassis under a 71 GMC 4x2 body. I am not sure of the year of the chassis, it has disc brakes, hub size for rims are 4 3/4" (see pictures), and the front leafs are 3" wide. I posted this in the 4x4 board too but I don't know if you all check that board. Attached Images

02-12-2005, 01:26 PM	#2
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	The same guys that will answer you over on the 4x4 fourms will answer you here. Actually they dont like us 4x4 guys over here on their 67-72 board hehe Thats why Josh made us our own little place on the web over on the 4x4 forums. Last edited by Mudder; 02-12-2005 at 01:30 PM.

02-12-2005, 01:30 PM	#3
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	There is a number stamped on the left front frame rail, near the power steering pump. It is part of the VIN number but I think it should tell you. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

02-12-2005, 02:24 PM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Look in the area on top frame rail on drivers side near /just back of the steering box. Post me the numbers and letters there. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

02-12-2005, 09:18 PM	#6
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Is it just me or does that rear axle hub look like a FURD hub??? All the 3/4 and 1 ton axle hubs I've seen on these trucks are smooth and round, this one has ridges cut into it. I could be wrong but it's just something I noticed. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

02-12-2005, 05:23 PM	#5
Tully Registered User Join Date: Jan 2005 Location: Hiles, WI Posts: 42	Rod, there are no numbers where you indicated on this chassis, but I looked on my 72 and they are right where you said. I think the PO put the 3" springs on because the front spring mounts and the shackles are bolted on. What is the first year for disc brakes?

02-13-2005, 07:58 PM	#7
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	That second pic is of a 14 bolt rear. 71 is the first year for disc. __________________ 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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