KB Hyper Performance Piston Set, KB420.030

KB Hyper Piston - AMC 401 Rod 5.858 Step Head +17.3cc 2V

Centered pin.

Sold As: Piston Set

Engine Manufacturer: AMC/Jeep

Engine Family: AMC V8

Engine Displacement (Liters): 6.6

Engine Displacement (cubic inches): 401

Bore Size (in): 4.165

Bore Size (mm): 105.8

Piston Head Type: Dish

Crown (cc): +17.3cc

Compression Ratio: 51-11.8, 58-10.9

Top Land: 0.3

Pin Type: Press or Floating

Bore Diameter MM: 105.8

Pin Number: 1000x300K

Make for Engine Family: AMC

Stroke (mm): 93.5

Compression Height IN: 1.51

Year To: 1978

Rod (in): 5.858

Crown Type: STEP DISH 2V

Oversize: .030"

OE Deck Height: 9.175, 9.208

Pin Diameter (in): 1

Compression Height MM: 38.3

Bore Diameter IN: 4.165

Intake Valve Depth/Diameter: .273/2.120

Lock: PRJ100-3

Piston Material: Cast 390 Hypereutectic Alloy

Rod (mm): 148.7932

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

Base Number: KB420

Year Range: 1971-1978

Alloy: 390

Pin Configuration: Centered

Oversized: Yes

Exhaust Valve Depth/Diameter: .273/2.120

Stroke (in): 3.68

Year From: 1971

Pin Diameter (mm): 25.4

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