Rear frame bent?
I have done many mini tubs, front clips, floors, torque boxes, Pinion angles, ETC. During all my years I have only found one A-body car that the front spring perches were not at an angle. These bodies were so different from one to another in all different areas. We have plates to slip in front of the front spring hangers to make them launch straight.
Did you ever watch the burn out contests at Carlisile. Most of the car want to spin in a circle. Or at the water box at a track you always have guys holding them straight. Once you mini tub a car and permantly weld the boxes in what you have is what you get if you follow the factory mounting. My suggestion is to get the car to leave straight with shims with the factory hangers. Then Mini tub the car off of those measurements. My Duster took 3/8 's back on the passenger side. Then we moved the whole rear back 3/4 to lengthen the wheel base.
I mentioned in another post I bought something over the weekend. I bought the frame rack used to calibrate and check frames from Mario Andretti's old race car shop. We'll be bringing it home next Sunday.
I have several 108 and 111 mopar race cars coming that need to be corrected. This is going to make it so much easier. I have a new 108 body we will mount and make fixtures . That way we can just put a car on and make it bolt up so its correct.
This being said. The distance of the perches should be the same from each end of the housing. Make the rear square and centered under the body. Install every thing loose. You will see you can move it around . The holes in the body are bigger then the studs and can always be oval ed same for the rear bolt on hangers. . The body is the frame on a uni-body car. The frame is just a strong fixture to mount things to Here are some measurements to go by. Add 3 inches for all measurements beteen the front and rear frame rails. This diagram is for a 108 wheel base cars. Barracuda, Duster, Demon, Dart Sport, 4 Dr. Valiants and Darts .. The Swingers ,Scamps, GTS's , Dart GT's are 111 inch wheel base
I have done many mini tubs, front clips, floors, torque boxes, Pinion angles, ETC. During all my years I have only found one A-body car that the front spring perches were not at an angle. These bodies were so different from one to another in all different areas. We have plates to slip in front of the front spring hangers to make them launch straight.
Did you ever watch the burn out contests at Carlisile. Most of the car want to spin in a circle. Or at the water box at a track you always have guys holding them straight. Once you mini tub a car and permantly weld the boxes in what you have is what you get if you follow the factory mounting. My suggestion is to get the car to leave straight with shims with the factory hangers. Then Mini tub the car off of those measurements. My Duster took 3/8 's back on the passenger side. Then we moved the whole rear back 3/4 to lengthen the wheel base.
I mentioned in another post I bought something over the weekend. I bought the frame rack used to calibrate and check frames from Mario Andretti's old race car shop. We'll be bringing it home next Sunday.
I have several 108 and 111 mopar race cars coming that need to be corrected. This is going to make it so much easier. I have a new 108 body we will mount and make fixtures . That way we can just put a car on and make it bolt up so its correct.
This being said. The distance of the perches should be the same from each end of the housing. Make the rear square and centered under the body. Install every thing loose. You will see you can move it around . The holes in the body are bigger then the studs and can always be oval ed same for the rear bolt on hangers. . The body is the frame on a uni-body car. The frame is just a strong fixture to mount things to Here are some measurements to go by. Add 3 inches for all measurements beteen the front and rear frame rails. This diagram is for a 108 wheel base cars. Barracuda, Duster, Demon, Dart Sport, 4 Dr. Valiants and Darts .. The Swingers ,Scamps, GTS's , Dart GT's are 111 inch wheel base
