The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-04-2018, 01:43 PM   #1
tow rig
Registered User
 
Join Date: Jul 2018
Location: Ripon, WI
Posts: 12
Good shock for lowered leaf rear

I am looking for a good quality shock for a 1970 GMC C2500 with HD leaf spring rear suspension. The rear is lowered 4 inches with hangers and shackles. I have relocated the upper rear shock mount a couple of inches to the rear (to straighten the shock angle.) I have already acquired Bilstein sport shocks for the front (2.5 inch drop spindles.) I have heard of using front shocks on a lowered rear. I assume that this advice applies to coil spring rear suspension, and may not be applicable to leaf springs. Is anyone using a gas "handling" shock on a 4 inch dropped leaf spring rear? My preferences are:

1)Bilstein Sport
2)KYB Gas Adjust
3)Racetech HQ
tow rig is offline   Reply With Quote
Old 10-04-2018, 02:40 PM   #2
57Suburb
Registered User
 
57Suburb's Avatar
 
Join Date: Apr 2014
Location: Southern Iowa
Posts: 310
Re: Good shock for lowered leaf rear

I'm using these from POL.

https://www.performanceonline.com/19...Absorber-Rear/
__________________
1972 C30 Grain Hauler, 350/400
1967 1500 GMC Stepside SWB, In Transformation Process
1967 RS/SS Camaro 350/TKO600
57Suburb is offline   Reply With Quote
Old 10-04-2018, 03:44 PM   #3
Mike C
Registered User
 
Mike C's Avatar
 
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
Re: Good shock for lowered leaf rear

I did an axle flip on the rear of my 69 short step. I moved the shock stud to the more vertical position and I used a stock length front shock. KYB GR2 in my case. My truck came down 7" over stock height. I would buy the Bilsteins and will do that for mine in the future. Not that I have any issues with the GR2 I just like lots of dampening.

I also used the same shock in the front with 2 1/2" spindles and 2" drop springs FWIW.
__________________
44 Willys MB
52 M38A1
64 Corvette Coupe
68 Camaro 'vert LT1 & TH700
69 Z/28 355 12.6's @110
69 Chevy Short Step 4 1/2"/7" drop
72 Jimmy 4WD 4spd 4" & 35's
02 GMC 2500HD 4x4 Duramax
Mike C is offline   Reply With Quote
Old 10-04-2018, 04:21 PM   #4
PepperTreeGarage
Registered User
 
PepperTreeGarage's Avatar
 
Join Date: Jan 2014
Location: SoCal
Posts: 281
Re: Good shock for lowered leaf rear

I'm running a set of CPP lowered shocks up front. I still need to measure rear travel. Then I'll choose one from the CPP chart. Doing the same thing Mike C. did.
'72 C20 5.5 front, Flip Kit rear with one leaf pulled out. Adding helper bags. Need to be able to carry a load and tow a trailer, with maybe a bit smoother ride when empty. Hey we all have a wish list.
http://www.classicperform.com/Catalo...hock_Specs.pdf
Attached Images
  
PepperTreeGarage is offline   Reply With Quote
Old 10-04-2018, 07:39 PM   #5
KY_GMC
Registered User
 
KY_GMC's Avatar
 
Join Date: Dec 2012
Location: Fort Thomas, KY
Posts: 300
Re: Good shock for lowered leaf rear

Quote:
Originally Posted by PepperTreeGarage View Post
I'm running a set of CPP lowered shocks up front. I still need to measure rear travel. Then I'll choose one from the CPP chart. Doing the same thing Mike C. did.
'72 C20 5.5 front, Flip Kit rear with one leaf pulled out. Adding helper bags. Need to be able to carry a load and tow a trailer, with maybe a bit smoother ride when empty. Hey we all have a wish list.
http://www.classicperform.com/Catalo...hock_Specs.pdf
Hey PepperTree, can you tell me about the helper bags? I have flipped the rear on mine and find it near impossible to haul anything now. Looking for a setup like yours.
__________________
1972 GMC 1500 Super Custom, 383 Stoker, TH350

Build Thread
http://67-72chevytrucks.com/vboard/s...d.php?t=592157
Engine Thread
http://67-72chevytrucks.com/vboard/s...d.php?t=592233
KY_GMC is offline   Reply With Quote
Old 10-05-2018, 03:53 AM   #6
PepperTreeGarage
Registered User
 
PepperTreeGarage's Avatar
 
Join Date: Jan 2014
Location: SoCal
Posts: 281
Re: Good shock for lowered leaf rear

Quote:
Originally Posted by KY_GMC View Post
Hey PepperTree, can you tell me about the helper bags? I have flipped the rear on mine and find it near impossible to haul anything now. Looking for a setup like yours.
It's called a Bag Over Leaf spring system. We're fabricating our own because no one makes a kit for '67-'72 trucks that I could find. Found this pic on the net and a fabbing we went. The bags are Firestone Ride-Rite from Ride Tech. This is the one I'm using. It specs out well for my app. https://www.ridetech.com/products/co...-tapered-rear/
I had already bought weld on brackets, so I'm re-working them to fit. The Ride Tech website has upper brackets here-
https://www.ridetech.com/products/co...upper-bracket/
Didn't see any lower ones. Just google Bag over leaf spring suspension, lots of pics come up. Good Luck.
Attached Images
 
PepperTreeGarage is offline   Reply With Quote
Old 10-05-2018, 04:00 AM   #7
54Caddy
GM Addicted
 
54Caddy's Avatar
 
Join Date: Jan 2009
Location: Visalia, Ca
Posts: 2,294
Re: Good shock for lowered leaf rear

Belltech SP shocks. By far the best riding shocks made for lowered applications
__________________
..Mac’s Garage..
73 GMC, 54 Caddy, 2010 Silverado, 68 C10 RIP DAd

My 73 GMC Truck Build Pic
2010 Silverado 4/6 on 24s

IG:MacsGarage
54Caddy is offline   Reply With Quote
Old 10-05-2018, 10:16 AM   #8
Low Elco
Registered User
 
Join Date: Apr 2003
Location: Indep, MO
Posts: 5,893
Re: Good shock for lowered leaf rear

Doetsch Tech. That's not a misspelling. Get your eyes and lengths and call em. About 45 a shock. They're great.
Low Elco is offline   Reply With Quote
Old 10-05-2018, 12:51 PM   #9
tow rig
Registered User
 
Join Date: Jul 2018
Location: Ripon, WI
Posts: 12
Re: Good shock for lowered leaf rear

Thanks for the replies. I have some great leads to follow. I am leaning toward putting a set of Bilstein Sport front shocks on the rear. (I have the Bilsteins on two other vehicles and have nothing but good things to say about ride, handling, and durability.) I know that the valving for front VS rear shocks may be different... But my application will involve some towing, and loaded bed, so the differences may work in my favor. Thanks again for sharing your experience. I still have some research to do.
tow rig is offline   Reply With Quote
Reply

Bookmarks

Tags
3/4 ton, bilstein, drop, leaf spring, shock


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:33 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com