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Username Post: 48 chevy coupe rear springs        (Topic#364909)
Posts: 1

Reg: 12-29-14
04-14-21 08:04 AM - Post#2818025    

48 Chevy Coupe. does anyone know what rear springs will work from a wrecking yard? For a v8 swap


Posts: 284
Loc: Bloomingdale, IL
Reg: 08-12-13
04-14-21 09:40 AM - Post#2818028    
    In response to chopper1950

There’s really nothing that will interchange. Stock springs are about 1 3/4 inches wide, most later model springs are 2 1/2 inches wide. Your best bet and least hassle and a job that can get done in about 3 hours is to get the bolt-in rear spring kit from Chassis Engineering. Grind/drill out all the stock spring mounts, bolt the CE mounts into the same holes, spring center bolt is in the right place to center the wheels in the fenders. Kit comes with shocks and shock mounts, everything to change over. Had one in my ‘46 Chevy for 25 years, no issues.

Edited by lofat46 on 04-14-21 09:41 AM. Reason for edit: No reason given.

Senior Member
Posts: 1584

Loc: North Coast, USA
Reg: 12-19-01
04-14-21 02:06 PM - Post#2818035    
    In response to chopper1950

  • chopper1950 Said:
48 Chevy Coupe. does anyone know what rear springs will work from a wrecking yard? For a v8 swap

Unless your springs are sagging or broken leaf the is no reason to change them for a V8 swap. A small block and late model trans mission weighs less that the original inline 6 cylinder and original trans. I have a 454/T400 in mine and have the original springs. Just add a ggos set of late model tube shocks. Get it on the road and drive it first then consider changing the springs, if needed.

"7th Year" Silver Supporting Member
Posts: 248
Loc: Kentucky.
Reg: 12-13-13
04-15-21 04:56 AM - Post#2818071    
    In response to 55MAS

I also used Chassi end spring kit when installing S-10 rear end for open drive and gear change. Quik and easy, I remeber they came in 2 diffren't ride heights.

48 sports coupe
63 C-10 long fleet
17 Tacoma double cab longbed
19 Toyota Rav-4

Been down most all the roads nowhere left to go??

Posts: 494

Loc: Portland,Or
Reg: 12-06-09
04-25-21 03:41 PM - Post#2818776    
    In response to RoadRocker

Another option on these early Chevy spring packs is to use donor leafs from another 1.75" spring pack, but retain your main leaf. Since Chev and GM cars used the 1.75" springs for many decades, you can have more variety of leafs among all the various Chevy cars and trucks . Chevrolet and GM used 1.75" leaf spring width to at least 1959 trucks, and '57 cars. So that gives you more to choose from.
When I did the V8 swap with an 8.8" Ford posi in the back in my '39 Chev coupe I used front leaf pack springs from a '58 Chev truck. They are the same width, but are thicker and flatter, so it lowered the rear of my car also. I ended up using 3 leafs added to the existing main leaf. I also drilled a new centering pin hole back 2" to center my new axle in the fender radius better. They sit too far forward in stock location.
With 4 leaf springs total, I also welded 1"x 1.75" box tubing to the axle perches to further lower the rear anther inch.
The rear on my car sat up like a stink bug with stock springs!

Afterwards it sits down about 5" lower.

1969 Suburban 2wd 350
1939 Chevy pass. coupe 350/700R4
1937 Austin gasser 327/TH350

Member #189 Moderator and "19th Year" Platinum Supporting Member
Posts: 6704
Age: 79
Loc: Napa, Ca USA
Reg: 04-02-00
04-28-21 08:18 AM - Post#2818928    
    In response to 1971BB427

Setting pretty.

29-41, 42-48, 49-54 Moderator
1948 Chevy Fleetmaster Coupe Purchased 6/2010. Stock with rebuilt 52 216 installed May 1966.
1965 Chevy II 2 door post 350 3 speed manual
2019 Ford Ranger Lariat Super Crewcab

Frequent Contributor
Posts: 2230

Loc: DeSoto, Illinois. 62924
Reg: 01-21-01
05-31-21 03:50 PM - Post#2820920    
    In response to Keith_Knox

Have had numerous 46-48 Chevies with a few with stock springs--ran many miles with the original springs--no problem--still have one pair left


Edited by REBORN55 on 05-31-21 03:50 PM. Reason for edit: No reason given.


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