KB Hyper Performance Piston Kit, KB398KTD.040

1 Set KB398.040/1 Set 4250BD8.040

Centered pin. Spacer ring included. Made from Chevy 454 BB. CC=closed chamber head.

Sold As: Kit with Rings

Engine Manufacturer: Chevrolet

Engine Family: Chevrolet BB V8 Mark IV

Engine Displacement (Liters): 8

Engine Displacement (cubic inches): 489

Bore Size (in): 4.25

Bore Size (mm): 108

Piston Head Type: Dome

Crown (cc): -17cc

Compression Ratio: 96.5-12.3, 105-11.3, 108-11.0, 119-10.0

Top Land: 0.312

Pin Type: Press or Floating

Alloy: 390

Pin Configuration: Centered

Intake Valve Depth/Diameter: .266/2.310

Compression Height IN: 1.27

Year Range: -

Crown Type: .180" CC SOLID DOME 1V

Bore Diameter IN: 4.25

Bore Diameter MM: 108

Oversized: Yes

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

Compression Height MM: 32.3

Rod (in): 6.385

Stroke (mm): 108

Pin Diameter (mm): 25.1

OE Deck Height: 9.8

Grade Type: Performance

Rod (mm): 162.179

Pin Diameter (in): 0.99

Oversizes: STD, .030, .040, .060, .070, .100

Piston Material: Cast 390 Hypereutectic Alloy

Pin Number: 0990x300K

Base Number: KB398

Lock: PRG110-3

Make for Engine Family: General Motors

Oversize: .040"

Stroke (in): 4.25