[Hal Copple]

recently my SPF was on a Mustang Chassis dyno for some tuning, basically a 392 Windsor, performer RPM, 750 holley Pro, trick flow heads, match ported, MSD, standard SPF side pipes. roller lifters over a flat tappet A351 Motorsports cam (pretty aggressive). Peak hp was 391 at 4960 rpm, where it also flattened out, peak torque 451 at 4000rpm, pretty flat torque curve. AF ratio was adjusted a bit with jets, althought for street use, i down jetted the primary two sizes, it was just to "gassy" on the street with their rich jetting. It is also a very tractable motor, for street and track.

Just thought i would post what a non-exotic Windsor could put out.