Stroke: 4.250, Disp. @ .030: 461, Rod Length: 6.735, Pistons: -5cc Flat Top, Rings: File Fit, Comp. Ratio 77cc/84cc: 11.0/10.3
Actual Engine CID:460
Bore (in):4.155 in.
Engine Stroke (in):4.250 in.
Piston Rings Included:Yes
Piston and Ring Oversize (in):0.030 in.
Piston Material:Forged aluminum
Piston Style:Flat top, with two valve reliefs
Piston Head Volume (cc):+5.00cc
Wrist Pin Style:Floating
Piston Ring Facing Material:Plasmamoly
Crankshaft Material:Cast steel
Rear Main Seal Style:2-piece
Connecting Rods Included:Yes
Connecting Rod Material:Forged 4340 steel
Connecting Rod Beam Style:H-beam
Rod Bearings Included:Yes
Rod Bearing Undersize (in):Stock
Rod Bearing Undersize (mm):Stock
Main Bearings Included:Yes
Main Bearing Undersize (in):Stock
Main Bearing Undersize (mm):Stock
Notes: All kits are designed for internal balance Flexplate/Flywheel and Balancer Not Included Oldsmobile 455 standard bore size is 4.125", kits are available in .030" and .060" oversizes. Eagle Specialty Products reserves the right to substitute pistons due to availability.