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Vehicle Info NeededUNITED ENGINE MACHINEPART NUMBER: 648-IC9941.030
Chevy 400ci FHR Forged Pistons Flat Top -3.7cc 2V
$60520
Ships on 09/15/2026
Lowest Price GuaranteeChevy 400ciFlat Top Pistons Use w/5.700'' Connecting Rods
- Chevy 400ci FHR Forged Pistons
- Flat Top -3.7cc 2V
- 4.155'' Bore (+.030'')
- Use w/5.700'' Connecting Rod & 3.750'' Crank Stroke
- Comp. Ratio: 12.8/58cc; 11.9/64cc; 10.4/76cc
- 8/pkg
Technical Specs: - Alloy: Premium 4032 Alloy
- Bore: 4.155'
- Crankshaft Stroke: 3.750'
- Connecting Rod Length: 5.700'
- Deck Height: 9.025'
- Compression Height: 1.433'
- Pin Size: 0.927' x 2.750'
- Pin Location: Centered
- Flat Top: -3.7cc 2 Symmetrical Valve Reliefs
- Intake Valve Relief: N/A
- Exhaust Valve Relief: N/A
- Top Landing Height: 0.250'
- Ring Grooves: 5/64' Top; 5/64' Middle; 3/16' Bottom
- Gram Weight: 571/132
- Compression Ratio: 12.8:1 w/58cc Heads; 11.9:1 w/64cc Heads; 10.4:1 w/76cc
Part TypePiston
BrandUNITED ENGINE MACHINE
Package Height4.6
Package Width9.3
Package Length18.2
Weight13.14 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberIC9941.030
Package Qty1
Package TypeEA
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