The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1971 C20

**jocko** · 10-31-2017, 06:46 PM

I believe G50 = HD springs. Leafs would be called out on the SPID, if ordered, as G70.
EDIT: didn't mean to type "coils" - if you have G70 and G50 both, then you have HD rear leafs.

10-31-2017, 06:46 PM	#2
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,994	Re: 1971 C20 - Heavy Rear Spring question. I believe G50 = HD springs. Leafs would be called out on the SPID, if ordered, as G70. EDIT: didn't mean to type "coils" - if you have G70 and G50 both, then you have HD rear leafs.