Chevy 489ci Forged Pistons Flat Top

Name: Chevy 489ci Forged Pistons Flat Top
Brand: UNITED ENGINE MACHINE
SKU: 648-IC784.060
Price: 782.24 USD
Availability: InStock

^$782²⁴

Ships on 09/08/2026

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Chevy 489ci

Flat Top Pistons

Use w/6.135'' Connecting Rods

Flat Top
4.310'' Bore (+.060'')
Use w/6.135'' Connecting Rod & 4.250'' Crank Stroke
Comp. Ratio: 10.2/96.5cc; 8.9/115cc; 8.6/119cc
8/pkg

Technical Specs:
Alloy: Premium High Ductility 2618
Bore: 4.310'
Crankshaft Stroke: 4.250'
Connecting Rod Length: 6.135'
Deck Height: 9.800'
Compression Height: 1.520'
Pin Size: 0.990' x 2.750'
Pin Location: Centered
Flat Top: 3cc 1 Valve Relief
Intake Valve Relief: N/A
Exhaust Valve Relief: N/A
Top Landing Height: N/A
Ring Grooves: 1/16' Top; 1/16' Middle; 3/16' Bottom
Gram Weight: 582/141
Compression Ratio: 10.2:1 w/96.5cc Heads; 8.9:1 w/115cc Heads; 8.6:1 w/119cc
Designed for all cylinder heads.

Part TypePiston

BrandUNITED ENGINE MACHINE

Package Height3.8

Package Width9.3

Package Length18.1

Weight13.78 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part NumberIC784.060

Package Qty1

Package TypeEA

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Some parts are not legal for use in California or other states with similar laws / regulations

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