Centering the rear wheels

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Car15

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What's involved in centering the rear wheels on a 68 cuda . I already moved the springs in. I would like to move the axle back and lower the car
 
A spacer plate between the body and the front spring mount, and longer bolts. Plus you will need a longer driveshaft. This will also push your rear shackles back and change that geometry. Add a lowering block between the diffy and the leaf spring then you need to set up the pinion angle again.Thats if you use your stock springs. Now you can get a custom set of leafs made as well.
 
I bought a 3/4 " spring relocation kit from Dr Diff. With offset rear shackles and a 1" lowering hole up front. I used Afco leaf springs, and didnt pay enough attention at the time. I got the springs with a 6.5/8" arch. And i should of gotten ones with a 4.2/5 arch. I also have a 1.5" lowering block in my duster now and the car sits where i want it too.
 
So I gotta change my opinion angle again and what do you do with the rear shackle leave them alone?
 
Well no depending on which route your going to go, you will for sure need to check the pinion angle. Dr Diff sells different wedges to get the pinion where it needs to be. Cass is a vault of information.
 
Start researching and talk to various people. Are you looking to make this into a corner carver? or just a daily driver thats a bit lower. Many ways to do stuff.
 
Look at where the rear shackle is pointing now with the car on the ground. Are they forward, middle or back. Look at the the tire in the wheel well now, how far back does it need to go to be centred? Thats the thickness of the plate you will need if front of the front spring eye mount. That will move the rear shackle back the same distance.
 
Here is a pic of mine after i installed the wedges.

335a4ah.jpg
 
toolmanmike said:
Moving rear end back. There are other threads but this is a good
Fisher said:
Start researching and talk to various people. Are you looking to make this into a corner carver? or just a daily driver thats a bit lower. Many ways to do stuff.
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No just want to make it sit lower with some meats I knew I needed a longer driveshaft. I Was going to just drill the holes in my relocation boxes up front but didn't know what effect that has on the rear shackles and what needs done back there mini tubbing it now the springs are already moved in
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1/2" shouldn't be a problem with the driveshaft but that might not be enough to make a difference for tire clearance. Don't worry about the shackles and their angle. As springs weaken they flatten out and the shackles move rearward naturally.
 
toolmanmike said:
1/2" shouldn't be a problem with the driveshaft but that might not be enough to make a difference for tire clearance. Don't worry about the shackles and their angle. As springs weaken they flatten out and the shackles move rearward naturally.
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Thanks, kinda thought so I f I dont have to move it I won't. The more forward on that axle the better for traction anyhow
 
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They came with the kit. I would assume Fastenal or some bolt supply shop would have them?
 
Mopower71 said:
Thanks. I tried fastenal and they had nothing. Where did the kit come from?
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Looks like the "proverbial 1/2" kit ". Ever see a really hi H.P. car move w/ it`s rear wheels moved back ? No , they always move them forward if their going to be moved.
 
famous bob said:
Looks like the "proverbial 1/2" kit ". Ever see a really hi H.P. car move w/ it`s rear wheels moved back ? No , they always move them forward if their going to be moved.
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Nope. The shape of the front of the wheel opening restricts large tires. Move the axle back for more tire clearance in the front. There's plenty of clearance in the rear.
 
Here's a couple examples. The purple car is almost out of room. No way the big meats would fit on the orange car without moving the housing back.

pro-street-1971-dodge-dart1.png


prostreet3.jpg
 
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