The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Leaf or coil standard rear spring on GMC?

CCCC · 03-20-2016, 10:22 AM

Have not researched this matter, but have owned quite a number of these Chevs/GMs and looked at many more. With pickup type, have come to the following impressions:
1 ton - C30/3500 - leaf rear.
3/4 ton - C20/2500 - leaf rear
1/2 ton - C10/1500 - usually coil rear but some with leaf rear (maybe called "heavy half")
I think every "K" model seen has been leaf front and rear.

Hope this helps - ready to be wrong.

03-20-2016, 10:22 AM	#5
CCCC Registered User Join Date: Mar 2007 Location: San Pedro River, SE Arizona Posts: 734	Re: Leaf or coil standard rear spring on GMC? Have not researched this matter, but have owned quite a number of these Chevs/GMs and looked at many more. With pickup type, have come to the following impressions: 1 ton - C30/3500 - leaf rear. 3/4 ton - C20/2500 - leaf rear 1/2 ton - C10/1500 - usually coil rear but some with leaf rear (maybe called "heavy half") I think every "K" model seen has been leaf front and rear. Hope this helps - ready to be wrong. __________________ CCCC 67 Sting Ray Coupe 327 4sp; 68 K10 Suburban 327 4sp; 69 K20 Lifted 383 4sp; 69 C80 Fire Truck 478 V6 5sp/2sp; 69 C20 Longhorn 327 4sp; 70 C30 Wrecker 350 4sp; 70 C30 Flat Bed 350 4sp; 71 C20 LWB 350 4sp; 72 K5 Blazer 350 4sp; 72 C30 Flat Bed Gooseneck Hauler with sleeper 350/TH400; 72 C20 Longhorn 402 4sp; 52 Mack LTL Supercharged Cummins 5sp x 3sp; 01 Dodge 5.9 HO Cummins 6spd; 02 Safari Trek 2430 8.1 Vortec on Workhorse Chassis; 03 Silverado 2500 HD 4wd Duramax/Allison Moved but still in the family 70 C20 Custom Camper 350/TH350; 72 K5 Blazer CST Highlander 350/TH350 Recently sent to new homes 72 C30 MoHome 402 4sp; 72 K5 Blazer Conv 350 4sp; 75 GMC 6000 Aerial 350 w Allison; 72 GMC 3500 Utility 350 4sp; 70 GMC 3500, 350 4sp