KB Hyper Performance Piston Kit, KB251KTM.040

1 Set KB251.040/1 Set 4342AM8.040

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

Stroke (mm): 95.3

Lock: PRF116-3

Alloy: 390

Intake Valve Depth/Diameter: .264/2.360

Year Range: -

Exhaust Valve Depth/Diameter: .264/2.360

Compression Height MM: 43.7

Pin Configuration: Centered

Bore Diameter MM: 110.3

Compression Height IN: 1.722

Bore Diameter IN: 4.342

Make for Engine Family: Mopar

Stroke (in): 3.75

Pin Number: 1.094x300K

Oversized: Yes

Grade Type: Performance

Oversize: .040"

OE Deck Height: 9.98

Crown Type: .260" STEP HEAD 2V

Pin Diameter (in): 1.094

Rod (in): 6.358

Piston Material: Cast 390 Hypereutectic Alloy

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

Pin Diameter (mm): 27.8

Base Number: KB251

Rod (mm): 161.4932

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