Difference of 1970 and 1971 k10 & Leaf spring bushings - The 1947 - Present Chevrolet & GMC Truck Message Board Network

OhioPaul · 10-24-2018, 07:19 AM

I always thought my truck had a 1970 frame based on the date of the motor that looks to be original to it. I'm replacing my front leafs and wanted to replace the bushing at the back of the leaf spring shackle on the frame. Many of the parts show they fit up to 1970 , then another part number for the 70 up. Unfortunately there are no specs that I can find that will tell the diameter of the bushings.

Does anyone know any tell tale difference between a 70 and 71? Has anyone replaced their bushing and know the diameter or part number?

**special-K** · 10-24-2018, 08:57 AM

Nothing sounds right there. I see suspension companies selling their front leafs as 69-72 straight on down the line, bushings all the same, bolts the same.

OhioPaul · 10-25-2018, 04:41 AM

https://www.prothanesuspensionparts.com/7806

Shows for 67-70

OhioPaul · 10-25-2018, 04:41 AM

https://www.ebay.com/itm/For-1971-19...frcectupt=true

Shows 71-74

OhioPaul · 10-25-2018, 04:44 AM

Pg 141 of LMC truck is listed for 71, 72 only

10-24-2018, 07:19 AM	#1
OhioPaul Registered User Join Date: Oct 2018 Location: Malvern Ohio Posts: 31	Difference of 1970 and 1971 k10 & Leaf spring bushings I always thought my truck had a 1970 frame based on the date of the motor that looks to be original to it. I'm replacing my front leafs and wanted to replace the bushing at the back of the leaf spring shackle on the frame. Many of the parts show they fit up to 1970 , then another part number for the 70 up. Unfortunately there are no specs that I can find that will tell the diameter of the bushings. Does anyone know any tell tale difference between a 70 and 71? Has anyone replaced their bushing and know the diameter or part number?

10-24-2018, 08:57 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: Difference of 1970 and 1971 k10 & Leaf spring bushings Nothing sounds right there. I see suspension companies selling their front leafs as 69-72 straight on down the line, bushings all the same, bolts the same. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-25-2018, 04:41 AM	#3
OhioPaul Registered User Join Date: Oct 2018 Location: Malvern Ohio Posts: 31	Re: Difference of 1970 and 1971 k10 & Leaf spring bushings https://www.prothanesuspensionparts.com/7806 Shows for 67-70

10-25-2018, 04:41 AM	#4
OhioPaul Registered User Join Date: Oct 2018 Location: Malvern Ohio Posts: 31	Re: Difference of 1970 and 1971 k10 & Leaf spring bushings https://www.ebay.com/itm/For-1971-19...frcectupt=true Shows 71-74

10-25-2018, 04:44 AM	#5
OhioPaul Registered User Join Date: Oct 2018 Location: Malvern Ohio Posts: 31	Re: Difference of 1970 and 1971 k10 & Leaf spring bushings Pg 141 of LMC truck is listed for 71, 72 only



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