Calling all '67 & '68 4x4 Owners - LEAF SPRING Data Sheet

[Mr-Jack]

Since the 67-68 4x4 Trucks are equipped with differant spring dimensions and sizes from the 69-72+ I'm putting something together....just some spring tech data that would be useful for members and i was wondering if you would give me a hand so i can build this spreadsheet.

If you have 69-72 spring data, i will add that as well.

I'm not looking for credit for anything, just trying to build something that people could reference when trying to either replace a spring, get spring rates for load carrying capacity, easy swap in springs from differant year modes, chosing the correct spring for a lift application, etc...

I'm looking for spring dimensions and i'll be working on this for a while, but if you have stock springs, lifted springs, springs you had built for you, aftermarket lift springs, springs from a junkyard...all spring data is helpful.

Please include the following information: (Preferably in order and specify front or rear)

- Make/Model/Year
- Where the spring came from (Stock, Aftermarket *Brand*, Another vehicle, etc)
- Provide Lift info for the springs as well (how much lift the spring is and if you have aftermarket hangers/shackles, please provide that as well)

Dimensions: (Using the picture below)
- (Green) - D1:
- (Blue) - D2:
- (Brown) - D3:
- (Purple) - D4:
- (Yellow) - D5:
- (Brown + Purple) - D6:
- Spring Width - D7:

Front of the truck is on the left and this is for the front and rear


I'll be saving all this information on a data sheet and posting it once i get some data rolling. If ya'll think this won't be benificial, I'll just scrap the idea, but I believe this would be very helpful for people in the future.

Thanks,

Jack

[eric67m]

I ran across this page the other day. It has a lot of info on all chevy / Gmc trucks, but the 67-68's are missing. I figure its a good start for you. Includes width which a difference between early and late leaf springs.

http://www.stengelbros.com/GMLeafSprings.htm#truck

If you go to their first leaf spring page they have similar pages for other makes, models, cars.......

[68SWB4x4]

68 suburban 1/2

stock front 44" centered. 3" bushings

stock rear 57" centered 28.5" 3.5" front bushing 3- 3/14" rear bushing

rears out of a 84ish gmc jimmy 52" centered 2.5" bushings

fronts from an 87 1 ton 47" centered 3" bushing

[Mr-Jack]

Damn Eric...that's one of the best links EVER Looks like someone has this data...i've been searching for something like this. I may not even need to do this now. just don't have spring ratings for stock leafs, but i can get all that info.

Thanks Kalle, the page he had above surprisingly didn't have the rear springs for 67-92.

I think what i'll do then is start emailing spring manufacturers about this info

[Tigman]

Great spring tech here! Just clicik on your application for specs!


Mark


http://www.generalspringkc.com/index...&parent=2&pg=1

[Mr-Jack]

Originally Posted by Tigman

Great spring tech here! Just clicik on your application for specs!


Mark


http://www.generalspringkc.com/index...&parent=2&pg=1

another sweet link...but notice on this page they don't show rear spring information for 67-68
http://www.generalspringkc.com/index...parent=13&pg=1