780"cu in complete engine. 5 in bore space Originally Steve Schmidt build rebuilt by RMRE. Donovan HC800 Block, Bryant Crank, GRP Rods, Ross 15.8-1 pistons, Schmidt Profiler Heads, Victory Titanium Valves, Jesel Rockers with .937 keyed lifters, Pac Springs, 60 mm LSM Cam, HRE intake with Induction Solutions single stage fogger, Braswell split Dominators and Moroso Vacuum Pump. Ran consistent 7.0's @ 194 in 2500lb car naturally aspirated. Only sprayed a few times with 200 shot. Easy 6 second runs. Just freshened up with new rods ,piston rings, cam and lifters. No runs on freshen up, only 10 minutes of break in time. Drop it in and go 6 seconds easily. Have stainless American Racing Headers (under car) for an additional cost.