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Vehicle Info NeededUNITED ENGINE MACHINEPART NUMBER: 648-KB277.STD
Oldsmobile 455ci Hypereutectic Pistons Dish Top
$49224
Ships on 09/08/2026
Lowest Price GuaranteeOldsmobile 455ciDish Top Pistons
- Oldsmobile 455ci Hypereutectic Pistons
- Dish Top
- 4.126'' Bore
- Use w/6.735'' Connecting Rod & 4.250'' Crank Stroke
- Comp. Ratio: 11.1/70cc; 10.6/75cc; 10.1/80cc
- 8/pkg
Technical Specs: - Alloy: Hypereutectic 390
- Bore: 4.126'
- Crankshaft Stroke: 4.250'
- Connecting Rod Length: 6.735'
- Deck Height: 10.625'
- Compression Height: 1.750'
- Pin Size: 0.9805'
- Pin Location: Centered
- D-Cup Dish Top: -15cc
- Intake Valve Relief: N/A
- Exhaust Valve Relief: N/A
- Top Landing Height: 0.210'
- Ring Grooves: 5/64' Top; 5/64' Middle; 3/16' Bottom
- Gram Weight: 635/147
- Compression Ratio: 11.1:1 w/70cc Heads; 10.6:1 w/75cc Heads; 10.1:1 w/80cc Heads
Part TypePiston
BrandUNITED ENGINE MACHINE
Package Height5.1
Package Width9.5
Package Length18.8
Weight15.4 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberKB277.STD
Package Qty1
Package TypeEA
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