KB Hyper Performance Piston Kit, KB129KTM.030

1 Set KB129.030/1 Set 4125BM8.030

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

Rod (mm): 152.4

Stroke (mm): 95.3

Make for Engine Family: General Motors

Base Number: KB129

Year To: 2018

Oversized: Yes

Compression Height MM: 28.7

Stroke (in): 3.75

Oversize: .030"

Compression Height IN: 1.13

Bore Diameter MM: 104.8

Bore Diameter IN: 4.125

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

Exhaust Valve Depth/Diameter: .280/2.168

Pin Number: 0927x300K

Grade Type: Performance

Pin Diameter (in): 0.927

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

Year Range: 1970-2018

Crown Type: SOLID DOME 2V

Lock: PRJ100-3

OE Deck Height: 9.025

Pin Configuration: Centered

Pin Diameter (mm): 23.5

Intake Valve Depth/Diameter: .280/2.168

Rod (in): 6

Year From: 1970

Alloy: 390

Piston Material: Cast 390 Hypereutectic Alloy