KB Hyper Performance Piston Kit, KB129KTM.STD

1 Set KB129.STD/1 Set 4125BM8.STD

Centered pin. Spacer ring included.

Sold As: Kit with Rings

Engine Manufacturer: Chevrolet

Engine Family: Chevrolet SB V8 Gen I

Engine Displacement (Liters): 6.6

Engine Displacement (cubic inches): 400

Bore Size (in): 4.125

Bore Size (mm): 104.8

Piston Head Type: Dome

Crown (cc): -3.3cc

Compression Ratio: 58-14.1, 62-13.3, 64-13.0, 76-11.2

Top Land: 0.25

Pin Type: Press or Floating

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

Compression Height MM: 28.7

Bore Diameter IN: 4.125

Compression Height IN: 1.13

Bore Diameter MM: 104.8

OE Deck Height: 9.025

Oversized: No

Year Range: 1970-2018

Base Number: KB129

Lock: PRJ100-3

Year From: 1970

Pin Configuration: Centered

Pin Number: 0927x300K

Pin Diameter (in): 0.927

Year To: 2018

Stroke (in): 3.75

Rod (mm): 152.4

Grade Type: Performance

Make for Engine Family: General Motors

Intake Valve Depth/Diameter: .280/2.168

Oversize: STD

Crown Type: SOLID DOME 2V

Alloy: 390

Ring Pack: 1/16, 1/16, 3/16

Pin Diameter (mm): 23.5

Piston Material: Cast 390 Hypereutectic Alloy

Rod (in): 6

Exhaust Valve Depth/Diameter: .280/2.168

Stroke (mm): 95.3