Quote:
I have a 10.5:1 906 headed 451 (400) that went 10.75 at 3300lbs with the 590. 
With more converter(4200) 10.60's were well within reach.
Two buddys of mine have similar results with the 590, both running low elevens with 440 cube motors originally with iron heads, both in 3800 pound cars. Both of these motors had poor quench and 10.5 compression.
Mopar did drag strip tests on all of their cams in the eightys, starting with the smallest cam ,a mp hemi grind and ending with the 590. All testing was done with the same car, a 400 bb motor in a duster. The car picked up over a tenth plus at each cam change with the 590 being the fastest. And that was with a 400 cube low compression motor. For my $$ I would run the 590 and degree it in as early as it likes. I might also try a smaller carb like an 850.
Last edited by gregsdart; 12/28/10 09:50 AM.
