Slapper Bars
I am running 2800 lbs SS springs on my 3700 lbs '68 A-Body and on my '70 E-Body. The rear suspension works incredibly well with this light spring in there, even though the '70 must be somewhere north of 3700 lbs and has a few hundred more horsepower. I was told about this set-up by Dr Diff. It is the best rear suspension set-up that I have ever experienced on my car, and I have tried a lot of them.
I didn't have the slapper bars on the '70, and I bent the right rear spring a bit due to the wrap it was getting under throttle. There was no wheel hop, but the spring obviously needs some help. 700+ hp, a 5 speed and 325/50-15 drag radials will do that to them.
This time I ordered a right side 2800lbs SS spring from Summit along with another set of slapper bars. I had 2 driver's side springs on the car, but the right rear squatted more that the left rear. Makes sense, as that's why the passenger side rear is a bit stiffer. I opted for the 30" long slapper bars this time, and will post some pictures of any modifications I have to make to get them tuned right on the car.
Another trick I've learned over the years is to lube all the suspension & shock bushings with Synthetic Disc Brake Lube. It really reduces sticktion, wont wash out and wont attack rubber or plastic. Its great for just about anything that moves, slides or pivots.
I am running 2800 lbs SS springs on my 3700 lbs '68 A-Body and on my '70 E-Body. The rear suspension works incredibly well with this light spring in there, even though the '70 must be somewhere north of 3700 lbs and has a few hundred more horsepower. I was told about this set-up by Dr Diff. It is the best rear suspension set-up that I have ever experienced on my car, and I have tried a lot of them.
I didn't have the slapper bars on the '70, and I bent the right rear spring a bit due to the wrap it was getting under throttle. There was no wheel hop, but the spring obviously needs some help. 700+ hp, a 5 speed and 325/50-15 drag radials will do that to them.
This time I ordered a right side 2800lbs SS spring from Summit along with another set of slapper bars. I had 2 driver's side springs on the car, but the right rear squatted more that the left rear. Makes sense, as that's why the passenger side rear is a bit stiffer. I opted for the 30" long slapper bars this time, and will post some pictures of any modifications I have to make to get them tuned right on the car.
Another trick I've learned over the years is to lube all the suspension & shock bushings with Synthetic Disc Brake Lube. It really reduces sticktion, wont wash out and wont attack rubber or plastic. Its great for just about anything that moves, slides or pivots.
