Suburban Lift - The 1947 - Present Chevrolet & GMC Truck Message Board Network

highrpm · 08-25-2005, 03:06 PM

Does anybody know if 3/4 4x4 Suburbans came with lift blocks in the rear from the factory or has mine been added by someone.

smokekiki · 08-25-2005, 04:53 PM

Mine does not have blocks.

kbeefy · 08-26-2005, 02:09 AM

I have a 71 3/4 t that only has about 1/2" block in there.
How flat are your rear springs?
Do your front springs have a negative arch?

Superron21 · 08-26-2005, 10:10 AM

my '68 had the negative arch front springs and no block in back, i went w/skyjacker softride 6" front springs and blocks in back. great ride, now i gotta decide what to do in back, thinking of flipping the shackles and using an addaleaf

fde2blk · 08-27-2005, 10:52 PM

My burb was converted to a rescue vehicle. When someone rolled thier ford the fire dept. would pick them up and rush them to the helipad in it. The fire dept records showed they asked for maximum ground clearence, 1n 69 when they bough it, as well as dual batteries and custom wireing etc... but point is it had 4" lift blocks front and rear not "home made" but a hollow cast block pined and cupped and angled for springs. I assume they were dealer installed or done by whoever did the rescue lights and wiring.

**JIMs70GMC** · 08-28-2005, 10:15 AM

the only block from the factory was a 1" block in the rear(had one on my 70 K25). In 71 the front spring hanger for the rear springs was lowered about 2", netting about 1" of lift and the block was no more.
Blocks up front is a big no-no.

earl87gta · 08-28-2005, 01:03 PM

Quote:

Originally Posted by fde2blk

My burb was converted to a rescue vehicle. When someone rolled thier ford the fire dept. would pick them up and rush them to the helipad in it. The fire dept records showed they asked for maximum ground clearence, 1n 69 when they bough it, as well as dual batteries and custom wireing etc... but point is it had 4" lift blocks front and rear not "home made" but a hollow cast block pined and cupped and angled for springs. I assume they were dealer installed or done by whoever did the rescue lights and wiring.

fde2blk Can I get a pic of the options list in the glove box from your burb?

highrpm · 08-29-2005, 08:57 AM

I think I see whats up.
The Eaton rear spring perches are alot taller than 14 bolt ones.
Thanks for the replys.

08-25-2005, 03:06 PM	#1
highrpm Registered User Join Date: Dec 2004 Location: Davidson, NC Posts: 269	Suburban Lift Does anybody know if 3/4 4x4 Suburbans came with lift blocks in the rear from the factory or has mine been added by someone.

08-25-2005, 04:53 PM	#2
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,473	Mine does not have blocks. __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

08-26-2005, 02:09 AM	#3
kbeefy Registered User Join Date: Jan 2005 Location: Alaska Posts: 39	I have a 71 3/4 t that only has about 1/2" block in there. How flat are your rear springs? Do your front springs have a negative arch? __________________ 70 k20 'burban (latest aqusition) 91 k1500 xcab lb 99 f350 (sold) 83 cj7 (huge and for sale) 82 rx7 (auto-x project) 74 VW superbettle 04 summit 800 151 & 05 renegade 600 guns, flying, camping, biking, 4-byin, bbq's and beer!

08-28-2005, 10:15 AM	#6
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	the only block from the factory was a 1" block in the rear(had one on my 70 K25). In 71 the front spring hanger for the rear springs was lowered about 2", netting about 1" of lift and the block was no more. Blocks up front is a big no-no. __________________ 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

08-29-2005, 08:57 AM	#8
highrpm Registered User Join Date: Dec 2004 Location: Davidson, NC Posts: 269	Lift I think I see whats up. The Eaton rear spring perches are alot taller than 14 bolt ones. Thanks for the replys.

08-26-2005, 10:10 AM	#4
Superron21 DONT TRY THIS AT HOME! Join Date: Mar 2005 Location: East Tennessee Posts: 119	my '68 had the negative arch front springs and no block in back, i went w/skyjacker softride 6" front springs and blocks in back. great ride, now i gotta decide what to do in back, thinking of flipping the shackles and using an addaleaf

08-27-2005, 10:52 PM	#5
fde2blk Registered User Join Date: Aug 2005 Location: wa Posts: 25	My burb was converted to a rescue vehicle. When someone rolled thier ford the fire dept. would pick them up and rush them to the helipad in it. The fire dept records showed they asked for maximum ground clearence, 1n 69 when they bough it, as well as dual batteries and custom wireing etc... but point is it had 4" lift blocks front and rear not "home made" but a hollow cast block pined and cupped and angled for springs. I assume they were dealer installed or done by whoever did the rescue lights and wiring.



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