Big Block Abody with factory front suspension

Sloppy frontend parts along with worn out steering gear will cause crappy handling under acceleration, and hard braking. A bodies don’t handle real well with the rear end jacked up equipped with under sized torsion bars. However because this is a drag car, choice of torsion bars will be dictated by track performance over road handling.

When I got my 67 Dart, a former drag queen with a tarted up /6 it had a /6 bar on driver’s side, and a SB V8 bar on right side, a set of worn out SS springs & bushings, and a worn out steering gear . It handled like crap, no it handled like less then crap…

With the power, and extra 300 pounds of a BB out front, any deficiencies in soundness of suspension & front end parts will be magnified. I would decide if you are going to employ any special track suspension tricks, or keep the car more of a street build, and then make sure every bushing, suspension part, spring, steering gear etc. is in like new condition.

I’m assuming you have installed sub-frame connectors, under radiator bracing, and torque boxes to tie the four corners of the car together. Anything less will allow too much body/frame deformation under hard acceleration twisting car exacerbating bump steer that adds more strange handling problems.

And as others have mentioned, mixing bisply with radials causes additional handling issues that can’t be overcome until all tires are of a single type.

A number of years ago Mopar published a book on upgrading suspensions that could help you better tune your car for street and track, or all out racing.