My 410 Dr J ported eddy heads went 10.56@125.4 with a 3450lb race weight. It's a 11.8 compression motor on E85. It dynoed 581HP with the factory hyd roller set up.


10.56 at 125.6, with a 1.43 60 ft. E85, Hyd. Roller 410 magnum,full exhaust, 3500 race weight.