Nelson Racing Engines Small Block Chevy - Hot …
Bore: 4.155 Stroke: 3.750 Displacement: 406.77 ci Piston dish: 28 cc Piston deck clearance: 0.005-0.007 Block deck height: 9.00 inches Compression ratio: 8.96:1 with 4.155×0.043 gaskets and 68cc chambers
