KB Hyper Performance Piston Kit, KB251KTM.STD

1 Set KB251.STD/1 Set 4342AM8.STD

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: Kit with Rings

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

Compression Height MM: 43.7

Stroke (in): 3.75

Alloy: 390

Pin Configuration: Centered

Stroke (mm): 95.3

Exhaust Valve Depth/Diameter: .264/2.360

Bore Diameter MM: 110.3

Bore Diameter IN: 4.342

Compression Height IN: 1.722

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

Lock: PRF116-3

Pin Number: 1.094x300K

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

Pin Diameter (mm): 27.8

Crown Type: .260" STEP HEAD 2V

Year Range: -

Oversize: STD

Rod (in): 6.358

Grade Type: Performance

Base Number: KB251

Rod (mm): 161.4932

Pin Diameter (in): 1.094

Intake Valve Depth/Diameter: .264/2.360

OE Deck Height: 9.98

Make for Engine Family: Mopar

Piston Material: Cast 390 Hypereutectic Alloy