Originally Posted By 451Mopar
PACT sells a heavy duty overdrive spring for $70. That and some good OD clutches along with the oiling mods to the shaft should support quite a bit of power?


A friend of mines 440 Duster is running 121 mph through the traps with a 518 with Ultrabell. Full street car with steel wheels and power steering.



"I think its got a hemi"