Mopar SS drag racing springs and a pinion snubber where never intended or designed to be used with each other Listen to the noise, loose the snubber My old max wedge A/SA NHRA stocker ran 1.49 60 ft . times on old 9 inch stocker tires back in the mid 1970 on the Mopar SS 002,003 SS spings and NO SNUBBER BTW, I did run a snubber at first and then took it off after attending one of the Mopar drag seminars at the old Irwindale, CA 1/4 mile track that Mopar would rent and let us Mopar racers test and tune for free as a Winternationals warm up, if they liked you they would offer advice such as "take that dang snubber off that car, dude " I listened, complied and went faster Let us know your results