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You are here: Home > Stroker Kits > Chevrolet - LS Series > LS - 4.000 Base Bore > Flat Top


Available Combinations for the Chevrolet LS 4.000 base bore are 370, 408, and 421 cubic inches in the conventional 4.000 bore block. Crankshafts are 4340 Forged Steel. Crankshaft models are 1 Piece Rear Main Seal and Standard or Full Center Counterweighted versions. As always Custom Combinations are no problem.

Vigilante - 4340 Forged Steel Crankshaft, 4340 Forged Steel H-Beam Rods, Probe SRS Series Forged Pistons. Designed for Street or Street and Strip performance applications.

Vindicator - 4340 Forged Steel Crankshaft, 4340 Forged Steel H-Beam Rods (w/ARP-2000), Probe PRS Series Forged Pistons. Designed for very serious Street or all out Strip applications.

Vanquisher - 4340 Billet Steel Crankshaft, Premium Connecting Rods (w/ARP-2000), Probe PRS Series Forged Pistons. Designed for very serious Street or all out Strip applications. All components are Made in the USA.




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VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 370_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9131-15030
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods
  • Probe SRS Series 2618-t6 Forged Pistons
  • Nitride Steel Top _ Napier Second Ring Set
  • King XP Series Rod and Main Bearings
  • Balancing is available upon request
  • Components rated at 700+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 3.622
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 370_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9131-15031
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods
  • Probe SRS Series 2618-t6 Forged Pistons
  • Nitride Steel Top _ Napier Second Ring Set
  • King XP Series Rod and Main Bearings
  • Balancing is available upon request
  • Components rated at 700+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 3.622
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 408_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9131-15032
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods
  • Probe SRS Series 2618-t6 Forged Pistons
  • Nitride Steel Top _ Napier Second Ring Set
  • King XP Series Rod and Main Bearings
  • Balancing is available upon request
  • Components rated at 700+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 4.000
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 408_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9131-15033
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods
  • Probe SRS Series 2618-t6 Forged Pistons
  • Nitride Steel Top _ Napier Second Ring Set
  • King XP Series Rod and Main Bearings
  • Balancing is available upon request
  • Components rated at 700+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 4.000
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 421_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9131-15034
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods
  • Probe SRS Series 2618-t6 Forged Pistons
  • Nitride Steel Top _ Napier Second Ring Set
  • King XP Series Rod and Main Bearings
  • Balancing is available upon request
  • Components rated at 700+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 4.125
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 421_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9131-15035
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods
  • Probe SRS Series 2618-t6 Forged Pistons
  • Nitride Steel Top _ Napier Second Ring Set
  • King XP Series Rod and Main Bearings
  • Balancing is available upon request
  • Components rated at 700+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 4.125
more info
VPE Vindicator Engine Kit
C_Vindicator Engine Kit_Chevrolet LS 370_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9231-15030
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods (w/ARP 2000)
  • Probe PRS Series 2618-t61 Forged Pistons
  • 52100 Bearing Steel Wrist Pins
  • .Nitride Steel Top - Napier Second Ring Set
  • Top or Lateral Gas Ports
  • AP Steel - Napier Second Ring Set
  • Components rated at 850+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 3.622
more info
VPE Vindicator Engine Kit
C_Vindicator Engine Kit_Chevrolet LS 370_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9231-15031
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods (w/ARP 2000)
  • Probe PRS Series 2618-t61 Forged Pistons
  • 52100 Bearing Steel Wrist Pins
  • .Nitride Steel Top - Napier Second Ring Set
  • Top or Lateral Gas Ports
  • AP Steel - Napier Second Ring Set
  • Components rated at 850+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 3.622
more info
VPE Vindicator Engine Kit
C_Vindicator Engine Kit_Chevrolet LS 408_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9231-15032
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods (w/ARP 2000)
  • Probe PRS Series 2618-t61 Forged Pistons
  • 52100 Bearing Steel Wrist Pins
  • .Nitride Steel Top - Napier Second Ring Set
  • Top or Lateral Gas Ports
  • AP Steel - Napier Second Ring Set
  • Components rated at 850+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 4.000
more info
VPE Vindicator Engine Kit
C_Vindicator Engine Kit_Chevrolet LS 408_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9231-15033
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Rods (w/ARP 2000)
  • Probe PRS Series 2618-t61 Forged Pistons
  • 52100 Bearing Steel Wrist Pins
  • .Nitride Steel Top - Napier Second Ring Set
  • Top or Lateral Gas Ports
  • AP Steel - Napier Second Ring Set
  • Components rated at 850+ Horsepower
Available Bore Sizes: 4.000, 4.030, 4.040
Stroke: 4.000
more info