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Vehicle Info NeededUNITED ENGINE MACHINEPART NUMBER: 648-IC9923.STD-1
Ford 408ci Windsor FHR Forged Piston Flat Top 4V
$14959
Ships on 09/11/2026
Lowest Price GuaranteeFord 408ciFlat Top Pistons Use with Ford 351W Block
- Ford 408ci Windsor FHR Forged Piston
- Flat Top 4V
- 4.000'' Bore
- Use w/6.200'' Connecting Rod & 4.000'' Crank Stroke
- Comp. Ratio: 12.4/58cc; 11.8/64cc; 11.0/76cc
- 1/pkg
This piston is based and intended for use on the Windsor-based Small Block Ford. Use with Ford 351W block. Pre-71 blocks have a .020' shorter deck.
Technical Specs: - Alloy: Premium 4032 Alloy
- Bore: 4.000'
- Crankshaft Stroke: 4.000'
- Connecting Rod Length: 6.200'
- Deck Height: 9.500'
- Compression Height: 1.280'
- Pin Size: 0.9272' x 2.750' (SBC)
- Pin Location: Offset
- Flat Top: -11cc 4 Symmetrical Valve Reliefs
- Intake Valve Relief: N/A
- Exhaust Valve Relief: N/A
- Top Landing Height: 0.222'
- Ring Grooves: 5/64' Top; 5/64' Middle; 3/16' Bottom
- Gram Weight: 446/132
- Compression Ratio: 12.4:1 w/58cc Heads; 11.8:1 w/64cc Heads; 11.0:1 w/76cc
Part TypePiston
BrandUNITED ENGINE MACHINE
Package Height5.0
Package Width5.0
Package Length5.1
Weight1.42 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberSIC9923.STD
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
