KB Hyper Performance Piston Kit, KB277KTM.040

1 Set KB277.040/1 Set 4125AM8.040

Centered pin.

Sold As: Kit with Rings

Engine Manufacturer: Oldsmobile

Engine Family: Oldsmobile V8

Engine Displacement (Liters): 7.5

Engine Displacement (cubic inches): 455

Bore Size (in): 4.126

Bore Size (mm): 104.8

Piston Head Type: Dish

Crown (cc): +15cc

Compression Ratio: 70-11.1, 75-10.6, 80-10.1

Top Land: 0.21

Pin Type: Press or Floating

Base Number: KB277

Lock: PRH107-3

Pin Configuration: Centered

Compression Height MM: 44.5

Oversized: Yes

Rod (in): 6.735

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

Grade Type: Performance

Stroke (mm): 108

Compression Height IN: 1.75

Bore Diameter MM: 104.8

Bore Diameter IN: 4.126

Year From: 1968

Pin Diameter (mm): 24.9

Year To: 1976

Crown Type: D-CUP

Oversize: .040"

Alloy: 390

OE Deck Height: 10.625

Stroke (in): 4.25

Pin Diameter (in): 0.98

Rod (mm): 171.069

Piston Material: Cast 390 Hypereutectic Alloy

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

Make for Engine Family: General Motors

Pin Number: 0980x300K

Year Range: 1968-1976