KB Hyper Performance Piston Kit, KB251KTM.060

1 Set KB251.060/1 Set 4342AM8.060

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

Crown Type: .260" STEP HEAD 2V

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

Alloy: 390

Oversized: Yes

Pin Configuration: Centered

Oversize: .060"

Lock: PRF116-3

Pin Number: 1.094x300K

Bore Diameter IN: 4.342

Compression Height MM: 43.7

Compression Height IN: 1.722

Bore Diameter MM: 110.3

Stroke (mm): 95.3

Stroke (in): 3.75

Pin Diameter (in): 1.094

Base Number: KB251

Rod (mm): 161.4932

Intake Valve Depth/Diameter: .264/2.360

Year Range: -

OE Deck Height: 9.98

Rod (in): 6.358

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

Pin Diameter (mm): 27.8

Make for Engine Family: Mopar

Exhaust Valve Depth/Diameter: .264/2.360

Grade Type: Performance

Piston Material: Cast 390 Hypereutectic Alloy