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Old 04-08-2015, 02:41 PM   #16
argonaut
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Join Date: Aug 2008
Location: Long Beach, CA
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Re: 1970 gmc c2500 3/4 ton 3-6 inch lift 2WD 71 disk brakes

I was considering a lift on my 64 2wd at some point. Here is what I can pull from memory. You'll have to check this stuff to make sure its correct.

Spindle: 88-98 lift spindle (like these: http://www.ebay.com/itm/1988-1998-Ch...8d6e5b&vxp=mtr )

Ball Joints: 88-98 lower ball joint. (should press into your 3/4 ton lower arm and match the spindle
I *think* your upper ball joint taper already matches the 88-98

Springs: Stock springs. You can use google search and find a moog spring prf that shows spring rates and lengths for various stock springs

Steering: 88-98 tie rod ends, adapted to your tie rods (may be able to get these from somewhere like CPP)

Hubs: i'm not sure that the standard 8-lug 3/4 ton hubs will mount onto the lift spindle. I think its made for six lug hubs. but maybe you can redrill the hubs, or maybe you can get 3/4 ton hubs to fit with different bearings and seals. I'm not really sure on this one.
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Jason M. @argonaut62

1972 K5 Blazer CST, Turquoise
1966 K20 Short Fleet Pickup, Big Ugly
1964 C10 Short Fleet, Gertrude

2001 Porsche 911 Carrera
1996 Ford Bronco XLT
1980 Jeep Wagoneer

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2005 Honda RC51
1981 Honda CB750C


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