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07-26-2020, 08:59 PM
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#1 |
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Registered User
Join Date: Apr 2007
Location: Dallas
Posts: 156
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Lowering rear 1.5"?
What are my options with the least amount of modifications? Not looking to cut bed support for a 2" shackle.
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07-26-2020, 09:25 PM
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#2 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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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 .
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77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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07-27-2020, 09:24 AM
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#3 |
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yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,824
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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.
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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07-27-2020, 12:25 PM
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#4 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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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 .
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77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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07-27-2020, 01:57 PM
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#5 | |
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yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,824
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Re: Lowering rear 1.5"?
Quote:
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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07-27-2020, 09:40 PM
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#6 |
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Registered User
Join Date: Apr 2007
Location: Dallas
Posts: 156
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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?
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07-27-2020, 10:16 PM
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#7 |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,599
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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.
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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07-30-2020, 12:56 PM
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#8 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,229
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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
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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08-04-2020, 01:54 PM
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#9 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,739
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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/
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. Last edited by 72c20customcamper; 08-04-2020 at 04:48 PM. |
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08-04-2020, 06:17 PM
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#10 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,739
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Re: Lowering rear 1.5"?
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
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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