I raised up the car with ramps under the back tires and stands up front. I checked the angle of the balancer, the drive shaft, and the pinion. Here is what I have. Do I need some shims? Any advice would be appreciated. Thanks FABO.
Brian, I agree that the trans & rear should be parallel if at all possible. But that's a weird drawing because the pinion centerline is normally below the trans centerline!
IF I am interpreting the drawing correctly, pinion angle is up. The long line represents the imaginary line from balancer through the crank and beyond? It should be down at rest. I believe as mentioned above 3*to 6* down is correct. I would try 3 and see where that puts you.
Ideally you want an imaginary line through the pinion that parallels the engine line.
The car hops violently when I do a burnout. That is why I checked the angles. It is a 68 Dart.
What springs are you running? New, originals, Super Stock?A 4 degree leaf spring shim would give me parallel pinion and engine lines. A 6 degree shim would give me a 2 degree down pinion angle. I am thinking I should try the 6 degree shims. I'm looking for as much advice as I can get. Thanks everyone.
A 6 degree shim would give me a 2 degree down pinion angle. I am thinking I should try the 6 degree shims.
What springs are you running? New, originals, Super Stock?
That might be a bit much.
More info on springs, are you running shackles for lift in the rear of the spring?
So they are fairly stiff (because they aren't worn out) How hard do you launch? Street car, street strip car, strip car? Just wondering if 1-2° is enough. It should be for general purpose stuff. But if you are side stepping the clutch at 6,000 r's or have a auto with a trans brake 2° might be ok as long as you have some kind of traction control. I am curious as to the racing suspension books recommend? (if you have a race car)I am running 3 year old ESPO springs with 1or 2 inch lift (don't remember for sure).
So they are fairly stiff (because they aren't worn out) How hard do you launch? Street car, street strip car, strip car? Just wondering if 1-2° is enough. It should be for general purpose stuff. But if you are side stepping the clutch at 6,000 r's or have a auto with a trans brake 2° might be ok as long as you have some kind of traction control. I am curious as to the racing suspension books recommend? (if you have a race car)