heavy duty factory rear coils - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sactoC10 · 09-24-2003, 10:46 AM

Anyone know the specifics of the rating / payload differences of the regular factory rear coil springs and what Chevrolet installed as a "Heavy Duty" rear coil spring in 1971?

slam33 · 09-24-2003, 11:01 PM

If it's a 1/2 ton, they use a 3/4 ton spring. Problem is I did the front end on mine a did a 3/4 ton spring, I also had 3/4 ton springs on the rear. The damm thing has a harsh ride to it. I thought it would just be a solid feel but it's not unless you load the bed down with about 300 lbs.

sactoC10 · 09-25-2003, 01:47 AM

I was simply curious, since my build sheet says that mine came with Heavy Duty springs, front and rear. It also had helper leafs in the rear when I bought it. I removed those quickly.

I swapped out the stcok coils (rear) for a set of Eibachs. I was thinking about selling my stock rear coils, but now I am thinking I'd better keep them! They could come in handy should I ever want to carry a serious load or pull something.

09-24-2003, 10:46 AM	#1
sactoC10 71 DELUX Join Date: Sep 2003 Location: Northern CA / Sac Posts: 1,056	heavy duty factory rear coils Anyone know the specifics of the rating / payload differences of the regular factory rear coil springs and what Chevrolet installed as a "Heavy Duty" rear coil spring in 1971?

09-24-2003, 11:01 PM	#2
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	If it's a 1/2 ton, they use a 3/4 ton spring. Problem is I did the front end on mine a did a 3/4 ton spring, I also had 3/4 ton springs on the rear. The damm thing has a harsh ride to it. I thought it would just be a solid feel but it's not unless you load the bed down with about 300 lbs. __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

09-25-2003, 01:47 AM	#3
sactoC10 71 DELUX Join Date: Sep 2003 Location: Northern CA / Sac Posts: 1,056	I was simply curious, since my build sheet says that mine came with Heavy Duty springs, front and rear. It also had helper leafs in the rear when I bought it. I removed those quickly. I swapped out the stcok coils (rear) for a set of Eibachs. I was thinking about selling my stock rear coils, but now I am thinking I'd better keep them! They could come in handy should I ever want to carry a serious load or pull something.



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