KB Hyper Performance Piston Kit, KB139KTD.030

1 Set KB139.030/1 Set 4125BD8.035

Centered pin.

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

Crown (cc): +7cc

Compression Ratio: 58-12.3, 62-11.7, 64-11.4, 76-10.0

Top Land: 0.275

Pin Type: Press or Floating

Stroke (in): 3.75

Compression Height MM: 36.4

Stroke (mm): 95.3

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

Intake Valve Depth/Diameter: .280/2.168

Base Number: KB139

Crown Type: FLAT TOP 2V

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

Pin Diameter (in): 0.927

Year From: 1970

Year Range: 1970-2018

Bore Diameter MM: 104.8

Bore Diameter IN: 4.125

Compression Height IN: 1.433

Rod (mm): 144.78

Alloy: 390

Pin Number: 0927x300K

Piston Material: Cast 390 Hypereutectic Alloy

Make for Engine Family: General Motors

Year To: 2018

Oversized: Yes

Grade Type: Performance

Pin Diameter (mm): 23.5

Lock: PRJ100-3

OE Deck Height: 9.025

Exhaust Valve Depth/Diameter: .280/2.168

Pin Configuration: Centered

Oversize: .030"

Rod (in): 5.7