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-   -   Lowering rear 1.5"? (https://67-72chevytrucks.com/vboard/showthread.php?t=809717)

BigTruckDriver 07-26-2020 08:59 PM

Lowering rear 1.5"?
 
What are my options with the least amount of modifications? Not looking to cut bed support for a 2" shackle.

sweetk30 07-26-2020 09:25 PM

Re: Lowering rear 1.5"?
 
drop springs or drop hanger for the front spring eye location.

i did mine with the drop hanger and shackle to get it dialed in . i just moved my hanger up and re-drilled the holes and used 7/16 bolts with stover / crimp lock nuts . then the rear i did have to notch the crossmember on the box for the shackle .

but mine i went down 2.5" front and rear . so if you did just hanger in the rear at the front of the leaf spring you will prob be fine i think . just be sure to check pinion angle .

bigblock73 07-27-2020 09:24 AM

Re: Lowering rear 1.5"?
 
If you have the longer HD springs, a drop shackle will clear the bed support. The shorter LD springs are the ones that will interfere with a drop shackle.

sweetk30 07-27-2020 12:25 PM

Re: Lowering rear 1.5"?
 
std issue is 52" eye to eye .

hd is the 56" eye to eye . and its 4" longer on the back side only .

and the shackle hanger bracket is back 4" in the extra frame holes . most i have seen have the extra frame holes already there .

bigblock73 07-27-2020 01:57 PM

Re: Lowering rear 1.5"?
 
Quote:

Originally Posted by sweetk30 (Post 8782609)
std issue is 52" eye to eye .

hd is the 56" eye to eye . and its 4" longer on the back side only .

and the shackle hanger bracket is back 4" in the extra frame holes . most i have seen have the extra frame holes already there .

You are correct.

BigTruckDriver 07-27-2020 09:40 PM

Re: Lowering rear 1.5"?
 
Looks like drop leaf springs are going to be my best bet. I am also looking to pull a trailer . Any reputable place to purchase from?

MikeB 07-27-2020 10:16 PM

Re: Lowering rear 1.5"?
 
Problem with just doing raised hangers or longer shackles (and not both) is the pinion angle will change and you will need angled spring shims to raise or lower the differential nose. if I had a do-over, I'd go with lowered springs.

Keith Seymore 07-30-2020 12:56 PM

Re: Lowering rear 1.5"?
 
You could raise the production spring hangers on the frame rail.

http://67-72chevytrucks.com/vboard/s...d.php?t=509224

K

72c20customcamper 08-04-2020 01:54 PM

Re: Lowering rear 1.5"?
 
I bought my lowering leafs from Western chassis. They are not to got on communication and took 12 business days to get the rears still waiting on the fronts UPS says Thursday. But the leafs I got look to be very nice and came from st Loius spring . I'd get a picture but right now were getting hammered with wind and rain

If I had known I would have ordered directly from them
http://www.saintlouisspring.com/

72c20customcamper 08-04-2020 06:17 PM

Re: Lowering rear 1.5"?
 
2 Attachment(s)
An hour ago we had 50 plus sustained winds and heavy rain . Now its calm and sunny . Pic of the newleafs old leafs are 8 new ones are 10 and American made:metal:


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