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 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-14-2019, 07:36 AM   #1
Malicious
Registered User
 
Join Date: Mar 2019
Location: Melbourne, Australia
Posts: 14
Flip or shackle the rear down?!

Hi,

Looking at lowering my 74 long bed, but not sure of how to do the rear. Thinking djm 3” spindles in the front, then spring to suit.

In the rear I was going to flip kit it, but I’m concerned I won’t have enough clearance without notching. I don’t want to notch, and I want to use the tub. Nothing crazy but occasional house Reno hauls.

I have about 5 3/4” from the top of the spring to the bottom of the chassis rail. Axle tub is about 3”, so I’m guessing I’ll have about 2.5” clearance to the rail.

What amount of clearance pre flip will allow me to not notch?

Or am I better off just using the drop shakle hanger kit and dealing with it sitting heigher in the rear?

Cheers!
Malicious is offline   Reply With Quote
Old 05-14-2019, 09:58 AM   #2
blazer2007
Registered User
 
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
Re: Flip or shackle the rear down?!

Mine is not notched and is a 80 swb ,get the odd bottoming out on a big pot hole
blazer2007 is offline   Reply With Quote
Old 05-14-2019, 10:53 AM   #3
Palf70Step
State of Confusion!

 
Palf70Step's Avatar
 
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,642
Re: Flip or shackle the rear down?!

How often will you haul something in the truck? The flip is a much better way than shackle method if you want 5/6inch or so drop. If the truck is empty most of thetime you should not have many issues without doing a c-notch.
__________________
Bill
1970 Chevy Custom/10 LWB Fleetside
2010 Toyota Tacoma PreRunner SR5 Double Cab - DD

Member of Louisiana Classic Truck Club (LCTC)

Bill's Gallery
Life isn't tied with a bow, but it's still a gift.
Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!
Palf70Step is online now   Reply With Quote
Old 05-14-2019, 04:52 PM   #4
skyphix
Registered User
 
Join Date: Sep 2018
Location: Hampden, ME
Posts: 406
Re: Flip or shackle the rear down?!

Drove my truck from South Carolina, USA to central Maine, USA (1600 miles) with a flip kit and no c-notch, with about 150lbs in the bed and super worn out rear leafs.

Other than some terrible roads in one state (3-5" pot holes/cracks/lips in the middle of an interstate while going 80ish mph to keep up with traffic,) I didn't really run into an issue with the axle hitting the frame - I'll probably put an add-a-leaf to adjust the height and stiffen up the rear a bit but its more for appearance than function.
__________________
Eric
1980 C10 SWB
2003 Chevy Suburban 2500 LT
skyphix is offline   Reply With Quote
Old 05-14-2019, 09:45 PM   #5
Malicious
Registered User
 
Join Date: Mar 2019
Location: Melbourne, Australia
Posts: 14
Re: Flip or shackle the rear down?!

I'm probably not going to be hauling a lot of cargo, mostly short trips with things like engines, rail way sleepers (the wooden logs), etc. However there might be the occasional long trip with a tray full of car parts for a swap meet. or maybe pulling a car on a trailer.

I'm just concerned that 2.5" estimated clearance will not be enough.

what clearance are you guys running without a C-notch?

You have a fair point about adding leaves, helpers or searching the springs tho if it is too low...
Malicious is offline   Reply With Quote
Old 05-15-2019, 08:04 AM   #6
74CustomK20
Registered User
 
74CustomK20's Avatar
 
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
Re: Flip or shackle the rear down?!

Could always do softer springs and helper bags for load capacity
__________________
Big Nate
Carp. Local 224. Buy made in the USA!
03 F350 6.0 Daily Race Truck.
79 C70 366 Project Dump.
74CustomK20 is offline   Reply With Quote
Old 05-15-2019, 09:58 AM   #7
blazer2007
Registered User
 
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
Re: Flip or shackle the rear down?!

I hauled some fairly heavy stuff 400 miles with little bottoming out,mostly when the road dips here and there, you just have to get the weight off the rearend, put the heavy stuff right up to the cab.
blazer2007 is offline   Reply With Quote
Old 05-15-2019, 12:13 PM   #8
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,910
Re: Flip or shackle the rear down?!

Quote:
Originally Posted by Malicious View Post
Hi,

Looking at lowering my 74 long bed, but not sure of how to do the rear. Thinking djm 3” spindles in the front, then spring to suit.

In the rear I was going to flip kit it, but I’m concerned I won’t have enough clearance without notching. I don’t want to notch, and I want to use the tub. Nothing crazy but occasional house Reno hauls.

I have about 5 3/4” from the top of the spring to the bottom of the chassis rail. Axle tub is about 3”, so I’m guessing I’ll have about 2.5” clearance to the rail.

What amount of clearance pre flip will allow me to not notch?

Or am I better off just using the drop shakle hanger kit and dealing with it sitting heigher in the rear?

Cheers!
Are your dimensions to the frame rail or bump stop? The bump stop is usually what makes contact first but you didn't mention what your plan is for it.
__________________
67SWB-B.B.RetroRod
64SWB-Recycle
89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides
@rattlecankustoms in IG

Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
SCOTI is offline   Reply With Quote
Old 05-16-2019, 12:04 AM   #9
Malicious
Registered User
 
Join Date: Mar 2019
Location: Melbourne, Australia
Posts: 14
Re: Flip or shackle the rear down?!

Quote:
Originally Posted by SCOTI View Post
Are your dimensions to the frame rail or bump stop? The bump stop is usually what makes contact first but you didn't mention what your plan is for it.
That measurement is from the bottom face of the frame rail. I was planning to cut the factory bump stop out and use either a flat bump stop or a weld in that in board and off of the side of the frame rail. Likely a flat stay bag on the bottom of the rail. Which is why I was estimating about 2.5" of clearance. Giving my self about 1/4"-1/3" for a bump stop.

Helper bags of load springs might be the way if its an issue... hmmm.
Malicious is offline   Reply With Quote
Old 05-16-2019, 10:22 AM   #10
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,910
Re: Flip or shackle the rear down?!

I set-up my stuff for 3" of compression travel. 2.5" will prob be fine for 90% of the time but that's w/o a load. What's the clearance going to be when loaded? That's where a small notch might be beneficial.
__________________
67SWB-B.B.RetroRod
64SWB-Recycle
89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides
@rattlecankustoms in IG

Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
SCOTI is offline   Reply With Quote
Old 05-16-2019, 08:33 PM   #11
808_67C10
Registered User
 
808_67C10's Avatar
 
Join Date: Sep 2011
Location: Hilo, Hawaii
Posts: 1,051
Re: Flip or shackle the rear down?!

I have a flip kit, no notches... there is lots of room as long at you take out the gigantic bump stops. I have never bottomed out and carried loads of 2-300lbs.

There is more than 2.5 inches clearance, I have almost 4" with the original 2wd springs (unloaded).
Attached Images
 
__________________
Frank (Hilo, Hawaii)
Trucks, Tacos, and Beer go together like Peanut Butter and Ladies!
85 C/10 SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=760383
67 C/10 SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=489298
79 K5 Blazer SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=657461
808_67C10 is offline   Reply With Quote
Reply

Bookmarks


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 10:06 PM.


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