1979 Pontiac Formula Firebird. 400 Big-block, bored 30 over. 455 heads, engine has less than 2,000 miles on it. It has a forged bottom end with TRW Speed-Pro pistons,Comp Magnum solid lift cam 306s, 306/555 duration and with 1.65 rockers make it a 306/612, built turbo 400 with 4000 stall, 3.73...