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09-14-2008, 06:50 PM
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#1 | |
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Bloo
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,285
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whats your experience with lift blocks?
i was looking at the lift for my K20 today.. the rear is a set of 6" blocks. has anyone here ever ran a 6" block? i have a 3" on the truck now, but the 6" block just looks HUGE... the u-bolt worries me even more than the block does though.
so what are your opinions on a 6" block?
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ASE Master Certified-GM Trained-Mechanic 1968 Chevy C30 157" WB Wrecker 1969 Chevy CST/10 SWB 1971 Chevy Custom/10 (first truck) 350, NV3500 5 speed 1971 Chevy K20 Custom Camper 4x4 350 TBI, SM465/NP205 1974 Chevy Custom Deluxe/10 1979 Chevy Custom Deluxe K10 farm truck beater 1989 Chevy K2500 Quote:
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09-14-2008, 06:53 PM
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#2 | |
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Account Suspended
Join Date: Feb 2004
Posts: 3,051
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Re: whats your experience with lift blocks?
Quote:
I prefer all spring lifts, myself. Move the brackets/shackles around with a shackle flip and/or run longer springs. If you spit out a lift block (especially a 6" one) it's really not fun (done it a few times). The axle's ability to bind up the spring and wrap is increased every inch of block you run... If I HAD to run one, it would be a stock Dodge or Furd one, that had the anti-kick notches in them, that you pass the bolts through. |
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09-15-2008, 10:25 AM
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#3 |
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Registered User
 
Join Date: Feb 2001
Location: East Central, MO
Posts: 11,336
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Re: whats your experience with lift blocks?
I used 4" for many years and never had a problem. You will probaby need ladder bars for axle wrap. Never use blocks in the front.
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09-15-2008, 10:30 AM
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#4 |
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Registered User
Join Date: Feb 2000
Location: Modesto, CA
Posts: 1,842
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Re: whats your experience with lift blocks?
Yup, your springs will be in an S shape every time you floor it = wheel hop!
Street driving and cruzing to the mall you should be fine  6" is a bit much for a block... .02c
__________________
1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks 
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09-15-2008, 07:43 PM
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#5 |
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Everything is work in progress
Join Date: Apr 2006
Location: Denver Colorado
Posts: 326
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Re: whats your experience with lift blocks?
if you want 6" lift use your 3" blocks and a shackle flip. Prolly cheaper and looks better.
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Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome |
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09-15-2008, 08:56 PM
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#6 |
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Senior Member
Join Date: Nov 2005
Location: Victor, Montana
Posts: 386
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Re: whats your experience with lift blocks?
Lift blocks are fine if you just cruise around and don't do a lot of off roading. I just sold my 95 ext. cab GMC. Over 200,000 miles and no problem. If you'll be accelerating hard, have loads of torque, or do serious offroading, I'd steer clear of them. And as most know, for sure not on the front axle. Hard braking could fold your front axle under the truck. I guess that would be like reverse axle wrap!
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04 4x4 GMC Ext. Cab lifted 71 2wd GMC / Ramjet 350 ready for sheet metal 49 Studebaker pickup |
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