Measuring rear springs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LawMan02 · 01-29-2006, 12:14 AM

I am ready to purchase a 6" lift kit for my '72 GMC K2500. My question is how do you measure the rear springs to know if I should order 52" or 56" rear springs? Any help is appreciated. Randy

shoobear · 01-29-2006, 12:28 AM

Measure eye to eye on your truck rear springs(eyelet of shackle to eyelet of frame spring hanger) Bend the tape measure with the arc of the springs. Where u getting your lift from?

LawMan02 · 01-29-2006, 12:58 AM

I've checked several places on the internet...Rocky Mountain Suspension, Jackit, 4 Wheelers Supply (which has free shipping). Do you have any suggestions?

shoobear · 01-29-2006, 02:29 AM

hey im not sure which company to use, i will get a lift in the spring some time. not sure if i will go 4 or 6".keep me posted where u get yours and price.
cheers

al's71gmc · 01-29-2006, 09:34 AM

I thought you were supposed to measure in a straight line eye to eye. Cause a 4" spring and a 6" spring are going to measure different from each other if you follow the curve. I could be wrong, happens alot.
Al

orange72blazer · 01-29-2006, 12:32 PM

Quote:

Originally Posted by LawMan02

I've checked several places on the internet...Rocky Mountain Suspension, Jackit, 4 Wheelers Supply (which has free shipping). Do you have any suggestions?

I would think you measure in a straight line from eye to eye also. I have tried a few different lift kits on my Blazer I would recomend going with a Tuff Country lift kit. I bought mine from Jackit, you can also get them from jc whitney and www.suspensionconnection.com .

shoobear · 01-29-2006, 12:44 PM

oh hey, u are right. straight line eye to eye. my 1970 3/4 4x4 rear springs are 52" eye to eye.

01-29-2006, 12:14 AM	#1
LawMan02 Junior Member Join Date: Nov 2005 Location: Saint Francisville, Louisiana Posts: 157	Measuring rear springs I am ready to purchase a 6" lift kit for my '72 GMC K2500. My question is how do you measure the rear springs to know if I should order 52" or 56" rear springs? Any help is appreciated. Randy __________________ 1972 GMC K2500, stepside, stock 350, 4 speed. Former F/D truck with 32,000 miles, no rust. 1973 Jeep CJ 5, 304, 33's with side pipes 2008 GMC 2500HD, CC, SWB, D/A, SLT

01-29-2006, 12:28 AM	#2
shoobear Registered User Join Date: Nov 2005 Location: Kaslo,BC Posts: 56	Re: Measuring rear springs Measure eye to eye on your truck rear springs(eyelet of shackle to eyelet of frame spring hanger) Bend the tape measure with the arc of the springs. Where u getting your lift from? __________________ I will run u over for FREE!!! 2001 F350 6" Lifted Dually 1970 ScoutII with chevy implants 1970 GMC 3/4 LB 4x4 (for sale) 1972 Chevy 3/4 LB 4x4 -project

01-29-2006, 12:58 AM	#3
LawMan02 Junior Member Join Date: Nov 2005 Location: Saint Francisville, Louisiana Posts: 157	Re: Measuring rear springs I've checked several places on the internet...Rocky Mountain Suspension, Jackit, 4 Wheelers Supply (which has free shipping). Do you have any suggestions? __________________ 1972 GMC K2500, stepside, stock 350, 4 speed. Former F/D truck with 32,000 miles, no rust. 1973 Jeep CJ 5, 304, 33's with side pipes 2008 GMC 2500HD, CC, SWB, D/A, SLT

01-29-2006, 02:29 AM	#4
shoobear Registered User Join Date: Nov 2005 Location: Kaslo,BC Posts: 56	Re: Measuring rear springs hey im not sure which company to use, i will get a lift in the spring some time. not sure if i will go 4 or 6".keep me posted where u get yours and price. cheers __________________ I will run u over for FREE!!! 2001 F350 6" Lifted Dually 1970 ScoutII with chevy implants 1970 GMC 3/4 LB 4x4 (for sale) 1972 Chevy 3/4 LB 4x4 -project

01-29-2006, 09:34 AM	#5
al's71gmc 4 eyed fever Join Date: Jul 2005 Location: Eureka, Nevada Posts: 500	Re: Measuring rear springs I thought you were supposed to measure in a straight line eye to eye. Cause a 4" spring and a 6" spring are going to measure different from each other if you follow the curve. I could be wrong, happens alot. Al __________________ 1971 GMC 2500 4x4 1972 GMC Sierra Grande 1/2 t 4x4-#1 son's truck. Recently completed resto. 4 YO daughter," Daddy, I like your truck better than Mom's." (2000 F350-ranch truck) Smart kid!!

01-29-2006, 12:44 PM	#7
shoobear Registered User Join Date: Nov 2005 Location: Kaslo,BC Posts: 56	Re: Measuring rear springs oh hey, u are right. straight line eye to eye. my 1970 3/4 4x4 rear springs are 52" eye to eye. __________________ I will run u over for FREE!!! 2001 F350 6" Lifted Dually 1970 ScoutII with chevy implants 1970 GMC 3/4 LB 4x4 (for sale) 1972 Chevy 3/4 LB 4x4 -project

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