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Old 12-02-2010, 11:22 PM   #7
superchevy
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Join Date: Jul 2000
Location: Austin, Texas
Posts: 2,453
Re: '72 GMC K25 build 454/4L80e

Time to rebuild the front and rear suspensions.
I installed a 4" front and rear spring lift kit from ORD...Off Road Designs. It uses new springs/shocks for the front suspension, and a shackle flip kit for the rear suspension to achieve the 4 inches of lift. While I had everything apart, I completely rebuilt the front and rear steering and braking components using stock GM components as well as a Superlift raised steering arm.
Also, I rebuilt the front and rear differentials. The front diff is a stock DANA 44 with 4.10 gears. The factory spicer lockouts were broken, so I installed new WARN lockout hubs.
The rear diff is a factory DANA 60 with 4.10 gears as well. The rear leaf pack is huge, and has a factory swaybar attached...a heavy duty towing setup for sureEverything was removed, sand or media blasted and primed/painted with Rustoleum satin black.
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'68 CST SWB factory 396/T400
buddy buckets, a/c, ps, pb

'72 Corvette convertible 454/4spd/ac, ps, pb

'73 GMC Sierra Grande short wide 454/T400 ps, pb, ac

'77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original

'78 GMC Sierra Classic short wide 454/T400 ps, pb, ac

'72 GMC Sprint SP454. 1 of 38 built.
'73 GMC Sprint SP454. 1 of 71 built.
'75 GMC Sprint SP454. 1 of 25 built.

SOLD! '72 GMC K25 4x4 468/4L80e/NP205
build thread
http://67-72chevytrucks.com/vboard/s...23#post4324423

SOLD!'55 Chevy gasser 496/4spd
build thread
http://67-72chevytrucks.com/vboard/s...96#post4324396
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