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Vehicle Info NeededUNITED ENGINE MACHINEPART NUMBER: 648-IC734.030
Chevy 383ci Forged Pistons Step Dish Top
$75742
Ships on 09/09/2026
Lowest Price GuaranteeChevy 383ciDish Top Pistons Use w/6.000'' Connecting Rods Use with Chevy 350ci Block and 400ci Crankshaft
- Chevy 383ci Forged Pistons
- Step Dish Top
- 4.030'' Bore (+.030'')
- Use w/6.000'' Connecting Rod & 3.750'' Crank Stroke
- Comp. Ratio: 10.2/58cc; 9.6/64cc; 8.6/76cc
- 8/pkg
Technical Specs: - Alloy: Premium High Ductility 2618
- Bore: 4.030'
- Crankshaft Stroke: 3.750'
- Connecting Rod Length: 6.000'
- Deck Height: 9.025'
- Compression Height: 1.130'
- Pin Size: 0.927' x 2.750'
- Pin Location: Centered
- Step Dish Top: -18.6cc 2 Symmetrical Valve Reliefs
- Intake Valve Relief: 0.264' Depth / 2.200' Diameter
- Exhaust Valve Relief: 0.264' Depth / 1.880' Diameter
- Top Landing Height: 0.273'
- Ring Grooves: 1/16' Top; 1/16' Middle; 3/16' Bottom
- Gram Weight: 422/132
- Compression Ratio: 10.2:1 w/58cc Heads; 9.6:1 w/64cc Heads; 8.6:1 w/76cc
- Use with 350ci block and 400ci crankshaft. This is a stroked 350ci chevy combination.
Part TypePiston
BrandUNITED ENGINE MACHINE
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberIC734.030
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
