Displacement: 383 CID
Bore x Stroke: 4.040” x 3.75”
Block: Cast Iron, 2 piece rear seal, 4-bolt main caps with drivers side oil dip stick hole, brass freeze plugs.
Connecting Rods: 5.7” Heavy I Beam
Pistons: Hypereutectic Flat Top
Balance Front: External
Balance Rear: External
Head Size / Compression Ratio:58cc — 11.9:1
BluePrint limited 12 month parts warranty. Click Here to view or download warranty form.