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You are here: Home > Stroker Kits > Chevrolet - LS Series > LS - 4.125 Base Bore > Flat Top


Available Combinations for the Chevrolet LS 4.125 base bore are 387, 427 and 441 in the conventional 4.125 bore block. Crankshafts are 4340 Forged Steel. Crankshaft models are 1 Piece Rear Main Seal and Standard or Full Center Counterweight 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 387_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9131-17030
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 3.622
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 387_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9131-17031
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 3.622
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 387_6.125 Rod_Flat_-4.6cc_Internal_12d Head_24 Tooth

P/N: 9131-18030
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 3.622
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 387_6.125 Rod_Flat_-4.6cc_Internal_12d Head_58 Tooth

P/N: 9131-18031
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 3.622
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 428_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9131-17032
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 4.000
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 428_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9131-17033
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 4.000
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 428_6.125 Rod_Flat_-4.6cc_Internal_12d Head_24 Tooth

P/N: 9131-18032
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 4.000
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 428_6.125 Rod_Flat_-4.6cc_Internal_12d Head_58 Tooth

P/N: 9131-18033
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 4.000
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 441_6.125 Rod_Flat_-2.7cc_Internal_15d Head_24 Tooth

P/N: 9131-17034
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 4.125
more info
VPE Vigilante Engine Kit
B_Vigilante Engine Kit_Chevrolet LS 441_6.125 Rod_Flat_-2.7cc_Internal_15d Head_58 Tooth

P/N: 9131-17035
  • 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: 4.125, 4.130, 4.135, 4.155
Stroke: 4.125
more info