ICON Premium Forged Big Block Chrysler 383 "B" 433ci / 491ci Pistons Dish Top 4.290" Bore

Name: ICON Premium Forged Big Block Chrysler 383 "B" 433ci / 491ci Pistons Dish Top 4.290" Bore
Brand: UNITED ENGINE MACHINE
SKU: 648-IC690.040-1
Price: 201.03 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Chrysler "B" 431ci / 489ci

Dish Top Pistons

431ci Use w/ 6.768" Connecting Rods & 3.750" Crank Stroke

489ci Use w/ 6.535" Connecting Rods & 4.250" Crank Stroke

Big Block Chrysler "B" 433ci / 491ci Forged Piston

Dish Top

4.290" Bore (+.040'')

433ci - 6.768" Rod & 3.750" Stroke; C/R 10.1/75cc; 9.7/80cc; 9.1/88cc

491ci - 6.535" Rod & 4.250" Stroke; C/R 11.4/75cc; 10.9/80cc; 10.1/88cc

1/pkg.

Technical Notes:

For use with 383 "B" blocks
Stock standard 383 cylinder bore is 4.250" with 3.375" crankshaft stroke
4.290" Bore + 3.750 Stroke = 433ci
4.290" Bore + 4.250" Stroke = 491ci

Technical Specs:

Alloy: Premium High Ductility 2618
Bore: 4.290"
Crankshaft Stroke: 3.750" (433ci); 4.250" (491ci)
Connecting Rod Length: 6.768" (433ci); 6.535" (491ci)
Deck Height: 9.980" (B)
Compression Height: 1.318"
Pin Size: 0.9900" x 3.000"
Pin Location: Centered
Flat Top: 2 Valve Reliefs
Effective Head Volume: 12.1cc
Intake Valve Relief: 0.215" Depth / 2.300" Diameter
Exhaust Valve Relief: 0.199" Depth / 1.880" Diameter
Top Landing Height: N/A
Ring Grooves: 1/16" Top; 1/16" Middle; 3/16" Bottom
Gram Weight: N/A
433ci Compression Ratio: 10.1:1 w/75cc Heads; 9.7:1 w/80cc Heads; 9.1:1 w/88cc
491ci Compression Ratio: 11.4:1 w/75cc Heads; 10.9:1 w/80cc Heads; 10.1:1 w/88cc