I had an 850 Proform on our 10.8 to 1 360 magnum with 2.02 ported MP mag R/T heads, Indy single plane, and Hughes 238/242 hyd. Roller. Swapped to an annular 1050 proform main body and picked up over 3 tenths and almost 3 mph. I'd say try it and you should see some sizable gains also.

Last edited by 71yelladustr; 11/06/16 10:19 PM.
392 gen III hemi on E-85 727 trans Dana 60
10.02@134