what's the differance in the two lengths of rear leaf springs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

coggonobrien · 11-27-2010, 01:54 AM

just curious what the differance is between the two differant lengths of rear leaf springs for the 67-72 chevy 4x4. any clear advantage of one over the other? The reason i ask is that i am converting my 2wd frame to 4wd so I can install the mounting perches as i like.

THanks,
David

turp mcspray · 11-27-2010, 10:34 AM

The longer and flatter the spring, the better the ride will be.

coggonobrien · 11-27-2010, 12:26 PM

as far as load capacity would i see much of a differance? also are the 67-72 springs a differant length then the 73+

**Dieselwrencher** · 12-02-2010, 04:38 PM

I think the 67-72's use like 48" ones and the 73 up use 52". Some of the 73 up use 56" but I think these are in 1 tons or heavy duty 3/4 tons. I'll have to go measure mine to let you know for sure.

**breeh** · 12-02-2010, 04:52 PM

67-68 rear springs are not the same as 69-72. 67-68 springs are also not available through the larger suppliers. They have to be custom made.

trapperjack · 12-02-2010, 06:50 PM

Quote:

Originally Posted by breeh

67-68 rear springs are not the same as 69-72. 67-68 springs are also not available through the larger suppliers. They have to be custom made.

As I found out the hard way. The 67-68 springs are wider and longer. And yes, harder to find. I need spring hangers, shackle, and maybe spring pack for driver's side rear, and am not finding any. The 69 and up have more leaves in the pack.

11-27-2010, 01:54 AM	#1
coggonobrien Registered User Join Date: Mar 2008 Location: Coggon, IA Posts: 580	what's the differance in the two lengths of rear leaf springs just curious what the differance is between the two differant lengths of rear leaf springs for the 67-72 chevy 4x4. any clear advantage of one over the other? The reason i ask is that i am converting my 2wd frame to 4wd so I can install the mounting perches as i like. THanks, David

11-27-2010, 10:34 AM	#2
turp mcspray Registered User Join Date: May 2007 Location: Rapid City South Dakota Posts: 2,359	Re: what's the differance in the two lengths of rear leaf springs The longer and flatter the spring, the better the ride will be. __________________ Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299

11-27-2010, 12:26 PM	#3
coggonobrien Registered User Join Date: Mar 2008 Location: Coggon, IA Posts: 580	Re: what's the differance in the two lengths of rear leaf springs as far as load capacity would i see much of a differance? also are the 67-72 springs a differant length then the 73+

12-02-2010, 04:38 PM	#4
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,140	Re: what's the differance in the two lengths of rear leaf springs I think the 67-72's use like 48" ones and the 73 up use 52". Some of the 73 up use 56" but I think these are in 1 tons or heavy duty 3/4 tons. I'll have to go measure mine to let you know for sure. __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

12-02-2010, 04:52 PM	#5
breeh Recovering 67-72 Addict Join Date: Oct 2000 Location: North Bend, WA Posts: 1,788	Re: what's the differance in the two lengths of rear leaf springs 67-68 rear springs are not the same as 69-72. 67-68 springs are also not available through the larger suppliers. They have to be custom made. __________________ 68 Short Fleet 4x4; 427; BTO Level 3 700R4; NP205; Dana 60 front and rear; 4" lift with 35's; Disc brakes; AGR variable ratio steering; factory bucket seats; factory tach and tilt. "Friends call me cruzer cuz I like fast cars and fast women"



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