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Hey Guys,

Has anyone gone from say a .509 hyd. to the .590? How much of a difference would there be given say a 10.5:1 440 fairly ported big valve 906 heads. 3800 pound b-body.



I did 20yrs. ago and went from 11.98 to 11.45.

70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas
9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ!
2013 StickShift Challenge Winner@ Mopar Nationals!