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Username Post: Beefing up suspension rear and front        (Topic#348582)
mattwehrwein 
Contributor
Posts: 148

Loc: wisconsin
Reg: 03-18-09
12-06-17 09:29 PM - Post#2717150    

First of all I have a 97 k1500 z71 with the 5.7.

Alright once I get my truck back in driving condition ( putting a timing chain in it at the moment) plus just replaced the transmission for the second time in its life 460 thousand miles. Still has the original engine.

I still have the original leaf springs in the truck and would love to stiffen up the back suspension. I did replace the rear shocks once before with bilsteins oem ones to keep it z71 original.

Can anyone point me into a decent leaf spring set? I would like to stiffen the suspension up a tad. And would also like to level everything up once done (torsion keys) now I'll be replacing shackles put new shocks in as well. I don't wanna spend a ton of money on this project but have searched google and rock auto and found springs on there for 160 bucks. I do like the bilstein shocks but mine are going on 8 years now.

Thank you



 
Low priced Genuine GM Auto Parts
454cid 
Frequent Contributor
Posts: 2442
454cid
Age: 44
Loc: West Michigan
Reg: 02-18-12
12-07-17 07:13 AM - Post#2717176    
    In response to mattwehrwein

  • mattwehrwein Said:

I don't wanna spend a ton of money on this project but have searched google and rock auto and found springs on there for 160 bucks.



Unless your springs are worn out, I don't think that will be of much benefit. I would look for 3/4 ton springs at the salvage yard.

  • Quote:
I do like the bilstein shocks but mine are going on 8 years now.



The Bilsteins may still be quite good. I used to have the Bilstein Heavy Duty shocks on my truck, but they had been there awhile, so I replaced them with some low end KYB's that I got on sale. The Bilsteins I removed were much stiffer than the new KYB shocks. I cleaned up the Bilsteins and put them on my shelf for later use. In the past when I've removed shocks I've found them to have little resistance to them.




99 K3500 RCLB


 
someotherguy 
Moderator
Posts: 28432
someotherguy
Age: 47
Loc: Texas
Reg: 08-01-03
12-07-17 08:40 AM - Post#2717179    
    In response to 454cid

The "light duty" 7200 lb gvwr 2500 springs are a good upgrade. Provides a slight amount of lift and they're a little bit stiffer, without going to the extreme of a full 8600 lb gvwr 2500 spring pack. The light duty pack is one more leaf than the 1500 pack, and has a thicker/longer overload leaf - also thicker/longer than the overload leaf in the F44 package (heavy duty suspension) on a 1500.

I've installed a couple of these packs on K1500's and it helps level out a truck that was previously sagging a little in the back.

You could score these from a junkyard or just order them new based on that application - 7200 lb gvwr 2500.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
mattwehrwein 
Contributor
Posts: 148

Loc: wisconsin
Reg: 03-18-09
12-07-17 11:25 AM - Post#2717196    
    In response to someotherguy

I just searched google and rock auto and can't find gvwr 7200 leaf springs. Do you know of a site that has a reasonable price for these? I don't have many junkyards in my area nearest Walmart is an hr away

Thank you



 
someotherguy 
Moderator
Posts: 28432
someotherguy
Age: 47
Loc: Texas
Reg: 08-01-03
12-08-17 07:40 AM - Post#2717304    
    In response to mattwehrwein

It's too bad they don't list them by GVWR the way the vehicles are rated. The light duty 2500 (7200 lb GVWR) has a "5 leaf" pack, meaning 4 leafs with 1 overload leaf. That looks like what the spring companies are referring to as the 2025 lb spring rating, but I'd call up somebody like Husky Spring and see if they can be of more assistance selecting the right ones.

Unless your truck has the F44 RPO code (heavier rear leaf pack similar to the light duty 2500, and the 9.5" 14 bolt semi float rear end) then you should already have the "4 leaf" pack with 3 leafs and 1 overload leaf, what looks like the 1425 lb spring rating.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
Low priced Genuine GM Auto Parts
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