KB Hyper Performance Piston Kit, KB370KTM.030

1 Set KB370.030/1 Set 4062AM8.030

Centered pin. Designed for 20 degree heads, 1966 and earlier. This piston will not work with 14 degree heads. Check small end of rod to piston before assembly /.045" clearance per side minimum.

Sold As: Kit with Rings

Engine Manufacturer: Pontiac

Engine Family: Pontiac V8

Engine Displacement (Liters): 6.4

Engine Displacement (cubic inches): 389

Bore Size (in): 4.0626

Bore Size (mm): 103.2

Crown (cc): +3.5cc

Compression Ratio: 71-10.7, 87-9.2, 96-8.5, 111-7.6

Top Land: 0.2

Pin Type: Press or Floating

Make for Engine Family: General Motors

Stroke (in): 3.75

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

Grade Type: Performance

Oversized: Yes

Rod (in): 6.63

Piston Material: Cast 390 Hypereutectic Alloy

Bore Diameter IN: 4.0626

Compression Height MM: 43.7

Bore Diameter MM: 103.2

Compression Height IN: 1.72

Year Range: 1959-1966

Exhaust Valve Depth/Diameter: .237/2.100

Lock: PRH107-3

Pin Diameter (in): 0.98

Pin Configuration: Centered

Oversizes: .030, .040, .060

Intake Valve Depth/Diameter: .237/2.100

Crown Type: FLAT TOP 1V

Year From: 1959

Rod (mm): 168.402

Year To: 1966

Stroke (mm): 95.3

Pin Number: 0980x300K

Alloy: 390

OE Deck Height: 10.25

Oversize: .030"

Pin Diameter (mm): 24.9

Base Number: KB370