My engine was just built and I have not yet installed and fired it up. It is a 402 BB bored an addition 50 thousands. edelbrock rpm performer 454 oval port heads, rpm performer intake, holley 750 double pumper, crane cam crn134551 duration @ .050 - 236 int and 246 exh, gross lift .553 int and .571 exh. scat rods, and domed pistons running 10.5:1 compression, forged and balanced crankshaft. msd 6a ignition box, msd street pro-billet distributior and 8mm helicore wires. moroso oil pan holley fuel pump 110 gph and that about does it. If im missing any neccesary info, post back. Engine guy said underrated 400 hp as when he ran the 396cu 375hp on the computer he got 350hp.