Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

Got a tired 3.8L Ecotec or L67 lying around? Looking for more grunt without any obvious add-ons in the engine bay? Increasing displacement to a whopping 4.2 litres, these stroker kits will provide you with the heart-throbbing exhaust note of a big bore engine with an abundance of torque. These stroker kits cover naturally aspirated and mildly-boosted setups.

Contents:

• 3.700" stroke nodular cast crank
• 4340 steel forged 'I' beam conrods with capscrew bolts and fully floating small ends (H Beam optional. See Parts Guide)
• Cast hyper-eutectic alloy pistons with 9:1 compression ratio (Forged optional. See Parts Guide)
• Moly piston rings
• Premium conrod bearings 
• Premium main end bearings

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The small end of the conrod needs to be resized to suit the gudgeon pin except for the kit with H-beam conrods and 0.040" oversize forged pistons.
• For flexibility, the assembly is not balanced so it can suit either Ecotec L36 or L67 Supercharged 3.8L engines with your own harmonic balancer and flywheel/flexplate. 
• The conrods come semi-finished so they can be honed and blueprinted to match your specific engine as well.
• Engine block will require machining to support the larger stroke crank.
• The image is for illustrative purposes only.

If you’re looking for that absolute sleeper look under the bonnet but still want to chalk the tires all the way to third, look no further than our entry level GM LS stroker kit. These fully balanced and forged rotating assemblies will provide an abundance of torque and enough power to surprise even the fussiest aficionado. No need to fish around doing research on what crank mates up with which rods, this kit brings to you everything needed to rebuild your GM LS at an affordable price whilst still maximising displacement and fun factor.

Contents:

• 4340 forged steel 4.000” crankshaft
• Diamond Racing forged pistons
• Steel H-beam conrods
• Moly race piston rings
• Premium conrod bearings
• Premium main end bearings

Engine Fitment Guide

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• No balancing required. This kit comes with a fully balanced rotating assembly.
• Machining of the engine block is required. Please consult an engine builder prior to purchase to ensure your block is suitable.
• Please discuss with us your application prior to purchase so the appropriate combination of parts can be supplied.
• Compression ratio will vary depending on head work.
• Type of reluctor wheel being used will need to be determined prior to purchase.
• Valve-train components, including camshafts and valve spring kits, can be purchased through other listings.
• The image is for illustrative purposes only.

If you’re looking for that absolute sleeper look under the bonnet but still want to chalk the tires all the way to third, look no further than our entry level GM LS stroker kit. These fully balanced and forged rotating assemblies will provide an abundance of torque and enough power to surprise even the fussiest aficionado. No need to fish around doing research on what crank mates up with which rods, this kit brings to you everything needed to rebuild your GM LS at an affordable price whilst still maximising displacement and fun factor.

Contents:

• 4340 forged steel 4.000” crankshaft
• Diamond Racing forged pistons
• Steel H-beam conrods
• Moly race piston rings
• Premium conrod bearings
• Premium main end bearings

Engine Fitment Guide

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• No balancing required. This kit comes with a fully balanced rotating assembly.
• Machining of the engine block is required. Please consult an engine builder prior to purchase to ensure your block is suitable.
• Please discuss with us your application prior to purchase so the appropriate combination of parts can be supplied.
• Compression ratio will vary depending on head work.
• Type of reluctor wheel being used will need to be determined prior to purchase.
• Valve-train components, including camshafts and valve spring kits, can be purchased through other listings.
• The image is for illustrative purposes only.

If you’re looking for that absolute sleeper look under the bonnet but still want to chalk the tires all the way to third, look no further than our entry level GM LS stroker kit. These fully balanced and forged rotating assemblies will provide an abundance of torque and enough power to surprise even the fussiest aficionado. No need to fish around doing research on what crank mates up with which rods, this kit brings to you everything needed to rebuild your GM LS at an affordable price whilst still maximising displacement and fun factor.

Contents:

• 4340 forged steel 4.000” crankshaft
• Diamond Racing forged pistons
• Steel H-beam conrods
• Moly race piston rings
• Premium conrod bearings
• Premium main end bearings

Engine Fitment Guide

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• No balancing required. This kit comes with a fully balanced rotating assembly.
• Machining of the engine block is required. Please consult an engine builder prior to purchase to ensure your block is suitable.
• Please discuss with us your application prior to purchase so the appropriate combination of parts can be supplied.
• Compression ratio will vary depending on head work.
• Type of reluctor wheel being used will need to be determined prior to purchase.
• Valve-train components, including camshafts and valve spring kits, can be purchased through other listings.
• The image is for illustrative purposes only.