KB Hyper Performance Piston Kit, KB210KTM.020

1 Set KB210.020/1 Set 4250AM8.020

Centered pin. Compression Ratio: calculated using gasket thickness.020 and -.041" deck clearance, gasket bore of 4.365 and unmodified block.

Sold As: Kit with Rings

Engine Manufacturer: Chrysler

Engine Family: Mopar Hemi (early)

Engine Displacement (Liters): 7

Engine Displacement (cubic inches): 426

Bore Size (in): 4.25

Bore Size (mm): 108

Piston Head Type: Dome

Crown (cc): -80cc

Compression Ratio: 168-9.6, 174-9.2

Top Land: 0.437

Pin Type: Press or Floating

Rod (mm): 174.244

Oversize: .020"

Make for Engine Family: Mopar

Rod (in): 6.86

Pin Number: 1.031x300K

OE Deck Height: 10.725

Pin Configuration: Centered

Alloy: 390

Lock: PRH113-3

Bore Diameter MM: 108

Compression Height MM: 49.5

Bore Diameter IN: 4.25

Compression Height IN: 1.949

Piston Material: Cast 390 Hypereutectic Alloy

Pin Diameter (mm): 26.2

Grade Type: Performance

Year To: 1974

Oversized: Yes

Stroke (in): 3.75

Exhaust Valve Depth/Diameter: Flat @ 23 deg

Year Range: 1963-1974

Base Number: KB210

Crown Type: .490" DOME HEMI -80cc 2V

Oversizes: STD, .005, .010, .020, .030, .040, .060

Stroke (mm): 95.3

Pin Diameter (in): 1.03

Year From: 1963

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

Intake Valve Depth/Diameter: Hemi 2.370