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 > Info Center > FAQ Truck Tech > 73-87


Closed Thread
Thread Tools Display Modes
Old 06-12-2009, 09:21 AM   #1
Keith Seymore
Registered User
Keith Seymore's Avatar
Join Date: May 2009
Location: Motor City
Posts: 7,995
Dropping a 73-87

To read the original thread and discussion on this topic go here- LINK

I'm going from memory here, so bear with me:

We did probably six or seven trucks in the 70's and 80's timeframe. All were done by cutting the coils on the front and relocating the spring hangers on the frame rail in the rear.

This first one was a 4" drop on the front (cut two coils) and a 6" drop on the rear (the rear was quite high to start with). Relocating the hangers constitutes 3" of that, and then I also removed a couple leafs if I remember right. Wheels are the factory aluminum, 15x7 (don't remember the offset) and the tires were an LR60-15 Goodyear.

Similar situation on this one but I didn't go down as far (...I got more conservative as I got older...). Cut one coil for a 2" ish drop, still went the full 3" on the rear. Wheels are a 15x8 truck rally (zero offset) with P235/75R15's all the way around.

Here's how the spring hanger relocation works. You cut the rivets holding the hangers and replace them with 3/8 grade 8 bolts (removing the pickup box helps with this part). Moving the bottom holes of the bracket into the top hole of the frame nets the 3" drop. Total investment at that time was around $1.38 for the bolts and $25 for a front end alignment. This particular truck has been a daily driver for 22 years with no issues.

Chevrolet Flint Assembly
GM Full Size Truck Engineering
1986 - Feb 2019
Intro from an Old Assembly Guy:
My Pontiac story:
Chevelle intro:

Last edited by augie; 02-15-2012 at 10:46 PM.
Keith Seymore is offline  
Closed Thread


Thread Tools
Display Modes

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 12:26 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2020