'Match Race 1969' 440 'Cuda vs 440 'Six-Barrel' Road Runner
MT Mopar,
Going by 'first hand' experience.
The 7" Wide Slicks {Maximum Allowable width for Stock Class}
1969 thru 1971, provided minimal traction with 1969 440 'Cuda.
Especially with Standard 3.55 or 'optional' 3.91 Gears.
With 7" Wide 'pie-cutters', the traction was 'poor' at best.
Just for the Rear-End Suspension
To get the A-Body to hook up, you needed;
*} 4.56 Gears {in Stock Class}
*} Super Stock Leaf Springs
*} Heavy-Duty Shackles
*} Adjustable Pinion Snubber with Under-Body Steel Bumper-Plate
*} Rear 'Drag Shocks' 50/50 or Chrysler Imperial 'extended travel' units.
*} Rear Shock Tower Plate Support Plates
*} Front Clamps for the Leaf Springs
*} Heavy-Duty, Solid or Urethane Bushings
*} Make sure the rear Torque-Boxes were properly welded
MT Mopar,
Going by 'first hand' experience.
The 7" Wide Slicks {Maximum Allowable width for Stock Class}
1969 thru 1971, provided minimal traction with 1969 440 'Cuda.
Especially with Standard 3.55 or 'optional' 3.91 Gears.
With 7" Wide 'pie-cutters', the traction was 'poor' at best.
Just for the Rear-End Suspension
To get the A-Body to hook up, you needed;
*} 4.56 Gears {in Stock Class}
*} Super Stock Leaf Springs
*} Heavy-Duty Shackles
*} Adjustable Pinion Snubber with Under-Body Steel Bumper-Plate
*} Rear 'Drag Shocks' 50/50 or Chrysler Imperial 'extended travel' units.
*} Rear Shock Tower Plate Support Plates
*} Front Clamps for the Leaf Springs
*} Heavy-Duty, Solid or Urethane Bushings
*} Make sure the rear Torque-Boxes were properly welded