KB Hyper Performance Piston Set, KB251.STD

KB Hyper Piston - Chry 450 Rod 6.358 Step Head -4.4cc 2V

Centered pin. Suggest checking quench dome with clay for clearance. Closed chamber heads require the quench dome to be machined down. Made from Chrysler 400 block. Use only stock rods. Comp. ratio will change with quench dome machining.

Sold As: Piston Set

Engine Manufacturer: Chrysler

Engine Family: Mopar Big Block B

Engine Displacement (Liters): 7.4

Engine Displacement (cubic inches): 450

Bore Size (in): 4.342

Bore Size (mm): 110.3

Piston Head Type: Dome

Crown (cc): -4.4cc

Compression Ratio: 72-12.9, 80-11.8, 84-11.3, 88-10.9

Top Land: 0.221

Pin Type: Press or Floating

Oversized: No

Make for Engine Family: Mopar

Base Number: KB251

Bore Diameter MM: 110.3

Compression Height MM: 43.7

Oversize: STD

Compression Height IN: 1.722

Ring Pack: 5/64, 5/64, 3/16

Exhaust Valve Depth/Diameter: .264/2.360

Lock: PRF116-3

OE Deck Height: 9.98

Bore Diameter IN: 4.342

Stroke (in): 3.75

Oversizes: STD, .020, .030, .040, .060

Intake Valve Depth/Diameter: .264/2.360

Pin Diameter (in): 1.094

Pin Number: 1.094x300K

Rod (mm): 161.4932

Rod (in): 6.358

Crown Type: .260" STEP HEAD 2V

Stroke (mm): 95.3

Alloy: 390

Pin Configuration: Centered

Pin Diameter (mm): 27.8

Piston Material: Cast 390 Hypereutectic Alloy

Year Range: -