W250 Center Pin Spacing for Leaf Springs?

[KEENO]

Does anyone know the "Center Pin" spacing on the Leaf Springs on our First Generation W250 (4X4)?



OR: "Centerline of Spring" to "Centerline of Spring" (front & rear)



My Manual doesn't seem to have this info:



It does tell me that the Frame Width (Rear) is 37. 68" (inside of metal)



And: 29. 88" (inside of metal) on the front of the frame.



Also: Is "Track" the same as "Wheel Mounting Surface" to "WMS"?



TIA... ... ... ... ... . KEENO

 

[KEENO]

Bueller! Bueller! Anyone? anyone... .



KEENO

 

[jlast]

Please tell me what you are thinking or doing?



I just got done putting chevy rear leafs on the rear of my dodge, I have just about all leaf spring information i could get from about four different manufactures of springs. I have both front and rear stock springs laying in the garage, I have skyjacker mearsurements off of thier DR60 rear springs, I have catalogs, spec sheets, etc... from two other spring makers that list almost every spring they make, and mearsurements, some list spring rates.



The measurements you request is a complicated one, for evey spring maker, every spring lift, every different number of leafs, will give you a different center pin at ride height. AT ride height i said because a free measurement of a spring will be alittle shorter cause of spring extension with weight toward shackle. Which in turn will be different between the two similiar springs with different rates and loads. Also note that some spring manufactures mearsure center pin distance differently, some follow the arch of the spring some pull mearsurements form going across the eyes. Please note that the type of arch, blocks or no blocks used, if spring is mounted level with the ground or not will affect the location of axle, and will be affected by the center pin placement.



I have rear spring measurements of

25" and 28. 5"

25" and 29"

center pins to eye.



listed by two different springs by two different manufactures.



I have stockers off of mine that had 6" blocks, if you want those mearsurements let me know I have to look at them again. These are all free measurements. I also have fronts around somewhere.



All above affects wheelbase more then anything, and was to much work to delete it.





NOW that i reread your post i think I might be thinking something different then what you are asking.



You want center to center on the axle perches? if so go out and mearsure off your truck? mearsure front of front spring rear of front spring and settle on a median. Do same with rear axle

If you dont have access i have a 350 I can do easy, flatbed

 

[KEENO]

Hey Jlast!



I guess I'm looking for "Cross-Truck" (width) measurement from the Spring Alignment Pin to Sring Alignment Pinin the Rear.



I have my eye on a Dana 70HD the has a Spring Perch width of 40 3/4 "! I don't what I'm worried about ... . If they're the wrong (spring perch) width I can cut them off and weld on new one @ the proper Dimension.



Thanks for the post... ... I can use the info you gave also!



KEENO

 

[jlast]

OK, my truck



rear is 44 1/4" pin to pin

front 31 1/2 pin to pin, and I believe D60 chevy version is the same.



Welding on your own spring perches will help a lot with setting pinion angle with whatever setup you end up with flipped shackle, 6+" lift, LOL rear CV, or carrier bearing also changes what you do for pinion angle.



Just a suggestion why not go 14bolt GM? cheap, plentiful, stronger then the 70, rear disc kit is pretty cheap, etc... easier to setup gears, cheap for parts local P N P, LOL



Fullsize WMS TO WMS run anywhere from 65" to 69" usual single wheel, and up to 76" dually. There was a post on specific WMS to wms measurements awhile back here, thought it was just on dodge axles, between Cab N Chass, single, dual wheel, etc...



Track and WMS is different. It depends on how the term track is used. Wms is mearsured on axle itself, but track is usual shown on the tire patch made, it can change with different tire and tire setups, were WMS only changes if you shorten or lengthen the housing. ASK for WMS to WMS. Track can also be described and used if the vehicle goes sideways down the road, meaning dog tracks, or ass sideways.

 

[RHancock]

Has anyone run a 14 bolt chevy in a dodge truck??? and how would it compare with the dana 80 ???



I had one in my 1 ton chevy and loved it, They will take a lot of abuse. . and parts are really cheep,

 

[jlast]

search on here there are several people running them, or building them



https://www.turbodieselregister.com/forums/showthread.php?threadid=81162



I would say why not, personally I know I have one if not the weakest version of the D70, which can in through most of the 1st gens, I know that it would definately be stronger then this axle.



91-00 dana 70 1. 41 shafts 32 spline



Keeno look at you PM, Please.

 

[KEENO]

Jlast Brother!



Thanks for your help!



Bye surfing the web a bit I gather most D70 HD were DRW vs SRW.



I've seen them used in 78-79 Ford & older Chevy (73-81 & 88-91) Applications



This D70 HD specs:



CP to CP (Spring Perch Pin) = 40 3/4"



WMS to WMS = 66"



It has disk brakes & 10 bolt lug pattern! I don't know what it came out of to have 10 bolt lug. Could this indicate DRW????



I check my PM & had nothing from you... ... Please try again or email me @ -- email address removed --



Thanks... ... ... . KEENO

 

[jlast]

I do believe the HD in d 70 hd is a bit misleading, I do not know of any difference between a labeled d 70 HD and a D70 with the 1. 5" shafts and 35 spline.



I use this website as a general reference, maker of detroit lockers



http://www.tractech.com/

click on application



it lists same carrier for both 70hd and 70 with 35spline 1. 5shaft.



What is throwing me is the 66" wms and 10 lug, 10 lug has to be a dual setup far as i know, but 66" makes it just barely a single wheel width. sounds like R/v, a F450 and up application but i would think they would be a bit wider then 66", cab and chassis gm version of a 14 bolt is 63" wide.



Sure its a 70 hd? just asking i almost bought a rockwell version out of a frito truck, disc and 10 bolt just so I could run 19. 5 or 22. 5 or 24. 5, looking for 19. 5 now.



i sent the PM about the time you posted, lol, its there now.