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Old 03-25-2009, 02:44 PM   #1 (permalink)
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Leaf Spring Dimensions FAQ

As someone who is always building 4wd vehicles, its nice to know leaf spring dimensions, to see what will and will not work in certain projects.

I'm trying to compile as much leaf spring information as possible. Please post up any specifications you may know. Right now the best website out there for this information is DRM's side: 4x4spot.com

79-88 Toyota 4wd Rear 20.5/27.5 long 2 3/8" wide 18mm/18mm or 14mm/18mm spring eyes.

88-98 Chevrolet/GMC 1500 31.5/31.5 long 2 1/2" wide .5625/.5625 spring eyes. Centered eyes.

61.5" Deaver Rear Springs 27.5/34" long 2 1/2" wide .5625/.5625 or .75/.75 spring eyes. Front reverse eye, rear centered eye.

Marlin/Trail Gear/All Pro front springs: 21/26" 2 3/8" wide 18mm/18mm bolt size.

Marlin/Trail Gear/All Pro Rear Springs: 27.5/29" 2 3/8" wide 18mm/18mm bolt size

All Pro 05+ 1.5" rear springs 55 1/2 OAL , 27 3/8 Pin to Front , 28 1/2 pin to rear .

Wrangler YJ: 22.5/22.5 2 1/2" wide

Stock Toyota Front: 22.5/22.5 2/ 3/8" wide 18mm/18mm bolt size
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Last edited by GRMhick; 03-25-2009 at 10:34 PM.
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Old 03-25-2009, 03:18 PM   #2 (permalink)
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It would be nice to know approximate lift and overall lenth eye to eye with the split and flat length
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Old 03-25-2009, 03:22 PM   #3 (permalink)
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Quote:
Originally Posted by Blue MT. SnowRunner View Post
It would be nice to know approximate lift and overall lenth eye to eye with the split and flat length
Lift is variable on spring rate and the weight of the vehicle. Most leafs do not have a linear rate, but are close. But thats a good idea to add. Spring rate is something that should be added.

Last edited by GRMhick; 03-25-2009 at 03:23 PM.
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Old 03-25-2009, 03:49 PM   #4 (permalink)
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I found this chart on another thread might be useful.
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Old 03-25-2009, 08:37 PM   #5 (permalink)
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Awesome!
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Old 03-26-2009, 05:11 AM   #6 (permalink)
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I'll have to admit I haven't touched that page in YEARS... mainly because comparatively speaking - aftermarket springs are light years better than they were 10+ years ago when some of us were forced to build spring packs because that was the only option aside from dropping $800+ on custom springs.

Glad to see some people keeping the fire alive though
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Old 03-26-2009, 09:56 AM   #7 (permalink)
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There is some good info in the FAQ on a page that lists lots of lengths and widths, but the addition of your extra info is welcomed.

http://www.4x4spot.com/misc__spring_information.htm
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Old 03-26-2009, 11:38 AM   #8 (permalink)
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Garrett you got some of it a little off:

F150s are 57" long, 26/31 (5/8, 9/16)

Early (73-79) Wagoneer rears are 57" long, 25.5 / 31.5 (9/16, 9/16)

You can add that to the spreadsheet.


Also you should clarify fronts and rears as most people are not leaf spring junkies like myself and can't identify a front from a rear simply by length.
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Old 03-26-2009, 12:36 PM   #9 (permalink)
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would this be an appropriate place to discuss how leaf springs work? I.E. whether or not all leaves contribute to lift and/or load capacity
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Old 03-26-2009, 01:47 PM   #10 (permalink)
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Good link to give you some information about spring rates:

http://www.therangerstation.com/tech...springrate.htm
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Old 08-30-2010, 08:48 AM   #11 (permalink)
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Any idea how to ID the first and second gen toy rear leafs? I have a set that I'm putting under my Zuk and I dunno what year they came out of. Energy Suspension lists 2 seperate kits for the first and second gen rear leafs, and I need bushings.
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Old 08-30-2010, 08:55 AM   #12 (permalink)
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Quote:
Originally Posted by One Sick Puppy View Post
Any idea how to ID the first and second gen toy rear leafs? I have a set that I'm putting under my Zuk and I dunno what year they came out of. Energy Suspension lists 2 seperate kits for the first and second gen rear leafs, and I need bushings.
The front eye of the 1st gen rear springs are 18mm ID.

Second gen front eyes are 14mm ID
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Old 08-30-2010, 09:03 AM   #13 (permalink)
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Cool. Thanks. That made it more simple that what I found:

1st gen: 1 5/8 thickness (3/2 leaves)
2nd gen: 1 1/4 thickness (3/1 leaves)

Apparently I have the 2nd gen.
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Old 08-30-2010, 04:35 PM   #14 (permalink)
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Does anyone know what the specs are on the new GM trucks rear springs, say 2009-2010?
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Old 02-28-2011, 10:56 AM   #15 (permalink)
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Okay i guess i did not see it hear but what is the thickness of the total stock spring pack at the center pin. I am going to be using a set as a SUA set up on a Heep. and ruff stuff has the mount for this but the spring pack has to be 1.75 thick.
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