newbie to the 4x4 world...4" lift questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67cst · 01-07-2005, 03:06 AM

hey guys im looking into a 4 inch lift for my 71 gmc halfton...its out of a 69-72 blazer...would it work on my truck? also is a 4 inch block a bit much? or do a lot of guys use blocks that tall? also the springs on the front, are they the same as a truck spring, and will driveshafts be an issue? do they need to be lengthened? im not a serious off roaded, the main reason i want a lift is to give the truck a tough look and so i can fit bigger tires, i do 4 wheel a bit but its mostly used when the roads get crappy up here...oh and do you need a drop pitman arm with a 4 inch lift ? from what i understand you can get by with a stock pitman arm but with the drop is recommended...im probably way off with what i think i know so can the guys with the right knowledge help me out here...sorry for rambling on and on

Derek

1972 · 01-07-2005, 04:09 AM

I don't know about the year swapability. A 4" block is fine, especially if your not a hardcore off roader. On the street you may get some spring wrap if you run it hard. For the steering correction there are two ways to go - a dropped pitman arm or a raised steering arm. For a 4" I would use the dropped pitman arm; if you use a raised steering arm you will likely have bumpsteer.

**JIMs70GMC** · 01-07-2005, 08:20 AM

Derek, The lift will work fine for your truck. Put the lift on and adjust the steering draglink to center the steering wheel and drive it, if you get a lot of bump steer consider adding a raised steering arm vice the drop pitman arm. The raised steering arm covers 4-6" of lift the dropped pitman arm is about 2". Retighten all of the u-bolts periodically, especially on the rear with the blocks they can and most likely will loosen up.

67cst · 01-07-2005, 11:04 AM

does 200 bucks sound fair for a used lift kit? im looking at one on the parts board but the guy hasnt replied back yet...i see he heas posted it several times in the past for that same price...maybe i can grind him down some to cover the shipping costs

poff · 01-07-2005, 12:45 PM

I am not positive but I think the Blazers have different rear springs than the trucks. I think Blazers use 6" springs to get a 4" lift. Check out the Off-Road Designs rear shackle flip for a 4" rear lift. http://www.offroaddesign.com/catalog/shacklekit.htm I have one on my truck with stock rear springs and it works great.

71swb4x4 · 01-07-2005, 02:54 PM

Even if the Blazers use different springs in the back it won't matter to you. A 4" block will raise any vehicle 4".

01-07-2005, 03:06 AM	#1
67cst i love summertime Join Date: Jul 2002 Location: Kelowna BC Posts: 4,302	newbie to the 4x4 world...4" lift questions hey guys im looking into a 4 inch lift for my 71 gmc halfton...its out of a 69-72 blazer...would it work on my truck? also is a 4 inch block a bit much? or do a lot of guys use blocks that tall? also the springs on the front, are they the same as a truck spring, and will driveshafts be an issue? do they need to be lengthened? im not a serious off roaded, the main reason i want a lift is to give the truck a tough look and so i can fit bigger tires, i do 4 wheel a bit but its mostly used when the roads get crappy up here...oh and do you need a drop pitman arm with a 4 inch lift ? from what i understand you can get by with a stock pitman arm but with the drop is recommended...im probably way off with what i think i know so can the guys with the right knowledge help me out here...sorry for rambling on and on Derek __________________ 1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724

01-07-2005, 08:20 AM	#3
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Derek, The lift will work fine for your truck. Put the lift on and adjust the steering draglink to center the steering wheel and drive it, if you get a lot of bump steer consider adding a raised steering arm vice the drop pitman arm. The raised steering arm covers 4-6" of lift the dropped pitman arm is about 2". Retighten all of the u-bolts periodically, especially on the rear with the blocks they can and most likely will loosen up. __________________ 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

01-07-2005, 11:04 AM	#4
67cst i love summertime Join Date: Jul 2002 Location: Kelowna BC Posts: 4,302	does 200 bucks sound fair for a used lift kit? im looking at one on the parts board but the guy hasnt replied back yet...i see he heas posted it several times in the past for that same price...maybe i can grind him down some to cover the shipping costs __________________ 1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724

01-07-2005, 12:45 PM	#5
poff Registered User Join Date: Dec 1999 Location: san diego, ca Posts: 546	I am not positive but I think the Blazers have different rear springs than the trucks. I think Blazers use 6" springs to get a 4" lift. Check out the Off-Road Designs rear shackle flip for a 4" rear lift. http://www.offroaddesign.com/catalog/shacklekit.htm I have one on my truck with stock rear springs and it works great. __________________ '70 K-20 San Diego, CA

01-07-2005, 02:54 PM	#6
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Even if the Blazers use different springs in the back it won't matter to you. A 4" block will raise any vehicle 4". __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

01-07-2005, 04:09 AM	#2
1972 Majician Join Date: Nov 2004 Location: In the Middle Posts: 329	I don't know about the year swapability. A 4" block is fine, especially if your not a hardcore off roader. On the street you may get some spring wrap if you run it hard. For the steering correction there are two ways to go - a dropped pitman arm or a raised steering arm. For a 4" I would use the dropped pitman arm; if you use a raised steering arm you will likely have bumpsteer.



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