4x4 70 GMC, any things to look for? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

muddpile · 09-02-2008, 12:44 PM

I might be buying a 1970 GMC 4x4 to use as a daily. It's in really nice shape to look at, well maintained, but I don't know a lot about these trucks in terms of their 4x4 counterparts. Here's some specs:
-1970 GMC LWB 4x4
-4:10 gears front, 4:11 rear
-350 4bbl, mechanical choke, headers
-4 speed trans

I think that's it. I'm not sure about power steering, brakes, etc. yet, as I'm waiting for an email from the gentleman with more details. Are there any problem areas that these trucks were known to have as 4x4's, and is it feasible to use one as an everyday driver (majority winter). It will see some local, some highway, some offroad, etc.

Any tips/advice would be great, thanks!

**CPNE** · 09-02-2008, 12:58 PM

Only year open knuckle dana 4x4 drums. I hear the drums are near impossible to locate if you need them (3/4 ton variety). The good news is its a fairly easy swap to disks if need be.

Should be an NP205 xfer case

We're doing a 70 Chevy 3/4 ton 4x4 right now, making it into a GMC. We were lucky, though not on road since 99, the front drums and shoes looked to be almost new.

Don't expect to go 70 MPH on the highway, for me 60 is tops. (You can translate into Kilometers

) And it will ride pretty harsh on rough roads

muddpile · 09-02-2008, 05:06 PM

Drums are still in good shape he said (mentioned they were hard to find). Good news that discs are an easy swap (definitely good to know).

It is a 3/4 ton. 60mph is around 90-95kmph. Our roads around here are kinda rough as well. Due to the fact that I'm always in a hurry and our highways are pretty rough, I may have to think another direction.

09-02-2008, 12:44 PM	#1
muddpile Registered User Join Date: Dec 2004 Location: Saskatchewan, Canada Posts: 1,371	4x4 70 GMC, any things to look for? I might be buying a 1970 GMC 4x4 to use as a daily. It's in really nice shape to look at, well maintained, but I don't know a lot about these trucks in terms of their 4x4 counterparts. Here's some specs: -1970 GMC LWB 4x4 -4:10 gears front, 4:11 rear -350 4bbl, mechanical choke, headers -4 speed trans I think that's it. I'm not sure about power steering, brakes, etc. yet, as I'm waiting for an email from the gentleman with more details. Are there any problem areas that these trucks were known to have as 4x4's, and is it feasible to use one as an everyday driver (majority winter). It will see some local, some highway, some offroad, etc. Any tips/advice would be great, thanks! __________________ 1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open

09-02-2008, 12:58 PM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,662	Re: 4x4 70 GMC, any things to look for? Only year open knuckle dana 4x4 drums. I hear the drums are near impossible to locate if you need them (3/4 ton variety). The good news is its a fairly easy swap to disks if need be. Should be an NP205 xfer case We're doing a 70 Chevy 3/4 ton 4x4 right now, making it into a GMC. We were lucky, though not on road since 99, the front drums and shoes looked to be almost new. Don't expect to go 70 MPH on the highway, for me 60 is tops. (You can translate into Kilometers ) And it will ride pretty harsh on rough roads __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

09-02-2008, 05:06 PM	#3
muddpile Registered User Join Date: Dec 2004 Location: Saskatchewan, Canada Posts: 1,371	Re: 4x4 70 GMC, any things to look for? Drums are still in good shape he said (mentioned they were hard to find). Good news that discs are an easy swap (definitely good to know). It is a 3/4 ton. 60mph is around 90-95kmph. Our roads around here are kinda rough as well. Due to the fact that I'm always in a hurry and our highways are pretty rough, I may have to think another direction. __________________ 1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open



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