This has been discussed a lot over the years. IMO a pinion snubber or traction bars are a band-aid fix. The real issue is the springs.

Do you have the front of the spring pack clamped?

https://board.moparts.org/ubbthreads/ubbt...on-snubber.html


1969 Dodge Coronet Super Bee 383 A4
1970 Plymouth Road Runner 440 FC7 (sold)