What are the difference between leafs? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*1969owner* · 02-11-2006, 10:51 PM

sorry to hear that, twas worth a try though. ttt 4 u

JAKES 68GMC · 02-12-2006, 03:23 PM

Anyone else wanna chime in and tell me the differences between 67-68 and 69-72 leaf springs, and whether I can use 69-72 springs on a 68?

**special-K** · 02-12-2006, 04:06 PM

You could change out the hangers.

JAKES 68GMC · 02-12-2006, 05:04 PM

Arent the front hangers riveted on? I looked in LMC catalog, and front leaf springs are the same 67-72. they only list them for one application, anyway. are the rear one bolted on?

JAKES 68GMC · 02-12-2006, 09:48 PM

Last TTT

JAKES 68GMC · 04-19-2006, 09:23 AM

Can anyone else tell me whether the leaves are different for 67-68, and 69-72. I need a stone carved answer, this thread didn't provide much useful info, if you couldn't already tell.

badpeanut · 04-19-2006, 11:02 PM

Are 4x2 rear leaf springs interchangable with 4x4 rear leaf springs (other than ride height)?

**Bob B.** · 04-20-2006, 04:05 AM

'67 and '68 GMC 4X2 leaf springs are unique. They are 2 1/4" wide. The '67 and '68 4X4 (both GMC and Chevy) rear leaf springs are different. They are taper leaf, use different hangers and bushings, and the axle U-bolts have the nuts on top, so the brackets welded to the axle are different, too. '69 and up leaf springs are wider on both 4X2 and 4X4 (I think they are 2 3/4"), though all the axle U-bolts have the nuts on the bottom. So, leaf springs between '67-'68 and '69-'72 will not interchange. '67-'68 4X2 and 4X4 leaf springs will not interchange. I don't know if '69-'72 4X2 and 4X4 leaf springs will interchange, but they use the same bushings and shackles, so they might.

JAKES 68GMC · 04-21-2006, 10:10 AM

What about the front leafs?

**Bob B.** · 04-21-2006, 08:04 PM

You got me there. I have only messed with rear leaft springs.

02-11-2006, 10:51 PM	#26
1969owner Account Suspended Join Date: Dec 2005 Location: martin georgia Posts: 568	Re: What are the difference between leafs? sorry to hear that, twas worth a try though. ttt 4 u

02-12-2006, 03:23 PM	#27
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,211	Re: What are the difference between leafs? Anyone else wanna chime in and tell me the differences between 67-68 and 69-72 leaf springs, and whether I can use 69-72 springs on a 68?

02-12-2006, 04:06 PM	#28
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: What are the difference between leafs? You could change out the hangers. __________________ "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 ~

02-12-2006, 05:04 PM	#29
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,211	Re: What are the difference between leafs? Arent the front hangers riveted on? I looked in LMC catalog, and front leaf springs are the same 67-72. they only list them for one application, anyway. are the rear one bolted on?

02-12-2006, 09:48 PM	#30
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,211	Re: What are the difference between leafs? Last TTT

04-19-2006, 09:23 AM	#31
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,211	Re: What are the difference between leafs? Can anyone else tell me whether the leaves are different for 67-68, and 69-72. I need a stone carved answer, this thread didn't provide much useful info, if you couldn't already tell.

04-19-2006, 11:02 PM	#32
badpeanut Not a bad nut after all.. Join Date: Dec 2000 Location: ND Posts: 1,759	Re: What are the difference between leafs? Are 4x2 rear leaf springs interchangable with 4x4 rear leaf springs (other than ride height)? __________________ '05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer

04-20-2006, 04:05 AM	#33
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,363	Re: What are the difference between leafs? '67 and '68 GMC 4X2 leaf springs are unique. They are 2 1/4" wide. The '67 and '68 4X4 (both GMC and Chevy) rear leaf springs are different. They are taper leaf, use different hangers and bushings, and the axle U-bolts have the nuts on top, so the brackets welded to the axle are different, too. '69 and up leaf springs are wider on both 4X2 and 4X4 (I think they are 2 3/4"), though all the axle U-bolts have the nuts on the bottom. So, leaf springs between '67-'68 and '69-'72 will not interchange. '67-'68 4X2 and 4X4 leaf springs will not interchange. I don't know if '69-'72 4X2 and 4X4 leaf springs will interchange, but they use the same bushings and shackles, so they might. __________________ 1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.

04-21-2006, 10:10 AM	#34
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,211	Re: What are the difference between leafs? What about the front leafs?

04-21-2006, 08:04 PM	#35
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,363	Re: What are the difference between leafs? You got me there. I have only messed with rear leaft springs. __________________ 1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.



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