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Rear Leaf Spring Selection Discussion - 3rd Gen's

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8.5K views 17 replies 11 participants last post by  novarioty  
#1 · (Edited)
I'm looking to replace my stock mono leafs. But I'm stuck trying to decide what to go with. One piece mono, Split mono, Multi or Coil Overs.

I know there's a TON of threads on here discussing different issues on this subject. But none that cover them all together, at least that I've read. :turn: . So sorry if this is a repeat.

I'm one of those guys that's all over the board when it comes to what I use my car for. I'd like something that rides nice for cruising, handles good, and is good on launches. Of course you can't get all this in one spring that I'm aware of? Each has their specific purpose. If I had to rate them I'd say cruising and cornering are tied in first and then 1/4 mile drag racing comes in third.

How stiff are the Hotchkis TVS multi leaf springs? Are they too stiff to give good weight transfer to the back on launches?

How's cal-trac's? This setup is mostly for drag racing correct?

How's CA g-bar setup? Best for?

Cut and past the below with your responses if you would. Thanks!!

Pro's

Mono:
Split Mono:
Multi:
Coil Over:
Cal-Trac's:
CA G-Bar:

Con's

Mono:
Split Mono:
Multi:
Coil Over:
Cal-Trac's:
CA G-Bar:
 
#2 ·
I don't know what you consider stiff? I have the Calvert split monos, cal tracs and the Rancho 9 ways on my 71. The car is very stiff. I am 160lbs and I can stand on the bumper and the car only moves 1/2" if that much and that is with the bars lose. I have dropped my tire pressure from 35 psi to 25 and it helped the ride some but that also affected cornering.
 
#7 ·
The G-bar set up is nice. I have the prodigy bar on mine, which is basically the original g-bar with adjustable arms. I'm running QA1 coilovers with it. One of the main reason I went with the g-bar is the adjustability. With leafs, once they settle, you are stuck with that ride height. With the g-bar set up, you have about 4 different settings to go to. I'm not at the point of driving mine yet, but from everything I've read, they are a great all around set up. There are quite a few guys on the pro-touring forums that run this set up and road race their cars as well as cruise in them. My vote would be the g-bar.
 
#10 ·
How firm is firm? I have the Hotchkis springs and Koni red shocks. It is pretty firm, but I like it that way. Your shocks will determin your ride as much as your springs will. The hotchkis leaf springs are 225 lbs. Stock springs are about 125 - 145 lbs depending on the car.
 
#11 ·
Due to the constant non-availability of the Hotchkis shocks for the rear does anyone have any alternate recommendations? I've pretty much had it with Hotchkis touting how great they are and not being able to supply a simple shock absorber. I want their crap off my car and plan to go G-Bar in the winter but I'll need an interim shock - can the regular Bilsteins be all that different? Someone like shockwarehouse should have something of a similar spec surely?

Thanks all
 
#14 ·
Jason

Jason, I think your car looks bada--. I like the color and the way it sits. My old 71 I replaced the rear monos with multileafs and new stock shocks. I had trick springs in the front with CE 90/10 drag shocks. Rode good to me and worked well at the track with a 1.64-60' and an 11.60 e.t.. It would get the front tires up about 2 inches and that was leaving at a dead idle on the foot brake. Can't tell, but is your car paint metalflake or just a solid blue.?