Icon Premium Piston Kit, IC689KTD.040

1 Set IC689.040/1 Set 4250BD8.040

Centered pin. Fits Indy, Edelbrock, 440 Source and OE heads. No STD size. Designed for 383" block with 3.750" stroke and 6.760" rod. Ratios calculated with block machined to.000" deck clearance. .990" wrist pin.

Sold As: Kit with Rings

Engine Manufacturer: Chrysler

Engine Family: Mopar Big Block B

Engine Displacement (Liters): 7.1

Engine Displacement (cubic inches): 431

Bore Size (in): 4.25

Bore Size (mm): 108

Crown (cc): +4.5cc

Compression Ratio: 75-12.3L, 80-11.7, 88-10.8

Top Land: 0.25

Pin Type: Press or Floating

Year Range: -

Make for Engine Family: Mopar

Compression Height MM: 33.5

Base Number: IC689

Bore Diameter MM: 108

Pin Configuration: Centered

Exhaust Valve Depth/Diameter: .199/1.880

Oversize: .040"

Compression Height IN: 1.318

Pin Diameter (mm): 25.1

Bore Diameter IN: 4.25

Pin Diameter (in): 0.99

Piston Material: Forged 2618 Alloy

Stroke (in): 3.75

Rod (mm): 171.704

Pin Number: .990x300K

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

Alloy: 2618

OE Deck Height: 9.98

Crown Type: FLAT TOP

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

Stroke (mm): 95.3

Lock: PRG110-3

Oversized: Yes

Rod (in): 6.76

Grade Type: Performance

Intake Valve Depth/Diameter: .218/2.300