Originally a six cylinder but I've swapped it out for a warmed up 289. Stock bottom end, 10.5:1 CR, Ported heads with 194/160's, Weiand Stealth Intake, Crane Blue Racer 218/218 @488, 1 5/8" Shorties H with 2 1/2" dual exhaust, MSD Ignition, Holley 600, C4 with 2800 stall, 8" w/ 3.55's and an Auburn limited slip.