Icon Premium Piston Kit, IC689KTD.030

1 Set IC689.030/1 Set 4250BD8.035

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

Make for Engine Family: Mopar

Intake Valve Depth/Diameter: .218/2.300

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

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

Base Number: IC689

Pin Diameter (in): 0.99

Pin Number: .990x300K

Rod (in): 6.76

Lock: PRG110-3

Bore Diameter MM: 108

Compression Height IN: 1.318

Compression Height MM: 33.5

Bore Diameter IN: 4.25

Stroke (mm): 95.3

Grade Type: Performance

Piston Material: Forged 2618 Alloy

Crown Type: FLAT TOP

Exhaust Valve Depth/Diameter: .199/1.880

OE Deck Height: 9.98

Year Range: -

Pin Configuration: Centered

Pin Diameter (mm): 25.1

Oversize: .030"

Alloy: 2618

Rod (mm): 171.704

Oversized: Yes

Stroke (in): 3.75