1968 Firebird BB Chevy 428 bore to 489 it was dyno'd 748 HP engine. Build in 2003 blueprint specs, see photo. Motor only run on Dyno and installation with tuneup and has never run after. The car was never run out of the shop. Transmission is a two speed TCI transmission built to handle this engine straight out of the box 2003 installed and never run. Engine sports king demon carburetor, high rise Victor Edelbrock intake, aluminum rocke, SRP HComp pistons, SCAT crank, Comp Camshaft, MSD ignition,10 p Roll system, tubbed, DANA 60 reared, and more. It has been sitting in the shop for 15 years. My life changes could be your gain at a reasonable price.