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PRO STREET Engine Kit - Chevy 420 Reverse Dome -20.5cc
Chevy 420 Reverse Dome -20.5cc Pro Street Engine Kit

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The Pro-Street Engine Kits are capable of handling extremely high horsepower levels.Cog belt blowers, big power adders, and high rpm are the playground of our Pro-Street Engine Kits. Featuring forged steel crankshafts, lightweight forged steel connecting rods, and forged pistons. They provide an excellent level of reliability in a brutal environment.

Pro-Street kits Include:

  • Forged Pistons
  • CHP Forged Steel Crankshafts
  • CHP Forged 4340 H-Beam Rods
  • Total Seal Rings
  • King High Performance Engine Bearings


Item# Item Name CHP Price Qty Add
14890-030-PS-C420 PRO STREET Engine Kit - Chevy 420 Reverse Dome -20.5cc (+.030")
$0.00
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ItemRacer PriceAdd
$200.00




Technical Specs:
Item Code14890-PS-C420
Vendor NameProbe Industries
Product TypeEngine Kit
Product ModelPro Street
Engine Displacement (cu.in.)420
Engine FamilyCHEVROLET - Small Block V8
BalancedNo
Piston ManufacturerProbe Industries
Piston Part Number14890
Piston Material2618-t61 Forged Aluminum
Piston Top TypeReverse Dome
Piston Head Volume (CC)-20.5cc
Piston Base Bore (in)4.125
Piston Compression Height (in)1.062
Ring TypeMoly-Pre Fit
Crankshaft VendorProbe Industries
Crankshaft Part Number10125
Crankshaft Material4340 Forged Steel
Crankshaft Stroke (in)3.875
Crankshaft Main Journal Size (in)2.648
Crankshaft Rod Journal Size (in)2.100
Connecting Rod VendorProbe Industries
Connecting Rod Part Number10078
Connecting Rod Material4340 Forged Steel
Connecting Rod Length (in)6.000
Connecting Rod TypeH-Beam




Compression Ratio:
Part NumberCylinder Head Volume
58.0cc64.0cc68.0cc76.0cc
14890-03010.6010.009.649.00
14890-04010.6410.049.679.03




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Engine Kits > Chervolet Small Block & Big Block Engine and Stroker Kits - 350/383/400/434/454/496 > Chevrolet - 400 Small Block V8 > 421 cubic inches > Reverse Dome
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