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Author Topic:   Leaf Spring Help
C2W
Dirt Full Roller

Total posts: 70
posted March 31, 2005 01:39 PM  
Hey guys, I have a camaro Street Stock. When I got the car it had a 9 inch ford rear end. Because of rules I had to put a stock one back in. Since I have done this the left rear is sitting down on the tire and it is shifted back too far. It has lowering blocks under both sides. The left side block is a little taller than the right, which would sit the right side up higher. My question is, do I have a bad leaf under that side?? Could it have something to do with the rear end sitting farther back on the left side?? Also the shocks arent hooked up under either side yet. Any help would be appreciated. This is my first leaf spring car to deal with. Also what type of ride heights should I be looking for and what are some tricks to make it bite harder?? Thanks.

marshalr
Dirt Maniac

Total posts: 148
posted March 31, 2005 03:50 PM  
1. have you gone back to the stock mounts?
With the stock mounts the location side to side is predetermined, you could get a little movement by fudging on the pins but it would not be as drastic as i think you are describing. There is an adjustableI use an adjustable lowering block that can move the axle housing fore and aft. Are you using one of those ?
2. The larger lowering block is usually installed on the right side. Among the other effects of the lowering block, it softens the spring a little. with 2 equal rate springs you would want to soften the RR a little. How tall are your lowering blocks? You might want to remove all lowering blocks and see what kind of ride height you have.
LR ride height should be in the range of 5 - 6" approximately, measure at a point far back on the frame before it kicks up.
I wonder if you don't have an old flat spring. Arch of a new multi leaf is about 6" depending on manufacurer. Remove the mounts, turn the spring upside down, then measure down to the floor at the pin in the middle. should be 6" or so, if it's 3 inches or so call your favorite spring dealer and arrange to have a new one delivered.
Some people bad mouth leaf springs, i like them. The metric guys will come on here and say get rid of the antique springs and get coils...... remember to wave at them as you go by, they need love too.

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Some People Race For A Living; I Live To Race

Eljojo
Dirt Forum Champ
Total posts: 968
posted March 31, 2005 08:10 PM  
Take the spring stacks apart. You will more than likely find the one or more of those leafs are in fact, broken. When you have them apart, give them a good cleaning. You get most of your strength from the short leaves. I put one new long leaf more on the left spring than the right. I also will have one of the mid range springs re-arched. It always takes a big clamp to get the pin bolt back in, but when done, I have a stiffer spring on the left and a little more arch on the right.
I run a 2" adjustable lowering block on the right and a 1 inch on the left, giving me a rear frame height of 6 1/2". (we've got some really dumb ride height rules about both sides being the same),
Landrum says to watch out for going to crazy with lowering blocks. If you go more than a couple of inches you will change the "pivot" point of the rear spring wrap and loose forward bite.

[This message has been edited by Eljojo (edited March 31, 2005).]

racingfool1
Dirt Full Roller

Total posts: 36
posted March 31, 2005 08:58 PM  
Sounds like you just flat missed the pin on the left side if it is that far off. Won't be laughing at none of us coil guys that way.

C2W
Dirt Full Roller

Total posts: 70
posted April 04, 2005 07:05 AM  
Well, I took the spring off this weekend and checked it out. It still has a pretty good arch, it was 5". I put it all back on and bolted up the shock and everything and it appeared to be sitting right. While I was under the car I noticed that the left rear spring mount was about 1 1/2" lower than the right rear. It was like they added a piece of metal in there on that 1 side. Is this something people used to do to make the car sit lower or is it for bite or what?? Also, the lowering blocks are close to the same size. I think there is only 1/8" difference. Thanks for all the help.

Istock66
unregistered Total posts: 70
posted April 04, 2005 07:58 AM           send a private message to C2W   Edit/Delete Message   Reply w/QuoteBBBBBB
I know you dont want to hear it but your going to want to buy a new set of leafs.

You dont have to run the lowering blocks. I dont run any.

Your leafs will last longer without them.

But they will likely work better with a 2 inch block, because it gives the rearend more leverage to wrap up the leaf on acceleration.
afco xhd are the heaviest.

Im trying to keep blocks out of my leafs so I can extend the life of them, but if I dont get it hooked up good on dry slick in the next two trys Ill be putting blocks in there to help.
5 inch of arch is oem, not a racing spring arch.

get new leafs, and start with them or youll be wasting your time for the most part.

I tried jc whitney leafs, then landrum then the afcos. I also built a rater and the afcos are a lot heavier. The heaviest landrum at 4 inches of compression was only 690 where the afco was 800 something.

Jeff


    

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