Availability
Engine Assembly, Short Block, LT1/LT4, 6.2L/376, 4.065 in. Bore, 3.622 in. Stroke, Forged Pistons, Two Valve Relief, 58 Tooth, Chevy, Gen V, LT, Each
Part Number: HPE-SP103
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 58 Tooth Reluctor, +10cc Dish Pistons, Each
Part Number: HPE-SP26-G4-B
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 58 Tooth Reluctor, +18cc Dish Pistons, Each
Part Number: HPE-SP31-G4-B
Not Yet Reviewed
Estimated Ship Date: Dec 26, 2025 if ordered today
Estimated Ship Date: Dec 26, 2025 if ordered today
This product may not be eligible for select promotional offers
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 24 Tooth Reluctor, +10cc Dish Pistons, Each
Part Number: HPE-SP37-G4-B
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 24 Tooth Reluctor, +4cc Flat Top Pistons, Each
Part Number: HPE-SP39-G4-B
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 24 Tooth Reluctor, +29cc Dish Pistons, Each
Part Number: HPE-SP40-G4-B
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
Engine Assembly, Short Block, 2-Piece Main Seal, Chevy, Big Block, 540, Each
Part Number: HPE-SP45
Not Yet Reviewed
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP67
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP68
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP69
Not Yet Reviewed
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP70
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP71
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
SHORT BLOCK, LS3 415CI Boost Shortblock 58T
Part Number: HPE-SP71-B
Not Yet Reviewed
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP72
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
ATK High Performance Chevy LS3 415 Short Block
Part Number: HPE-SP74
Not Yet Reviewed
Estimated Ship Date: Dec 22, 2025 if ordered today
Estimated Ship Date: Dec 22, 2025 if ordered today
This product may not be eligible for select promotional offers
BUILDER 2.3L / KIT 1
Part Number: FMS-M-9001-DKIT1
Not Yet Reviewed
Estimated Ship Date: Oct 23, 2025 if ordered today
Estimated Ship Date: Oct 23, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series 14 in. Classic, Long Block, Assembled, Hydraulic Roller, Internal Balance, Aluminum Block and Heads, Orange, Chevrolet, 6.2L LS3
Part Number: LSS-GMLS9001
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series 14 in. Classic, Long Block, Assembled, Hydraulic Roller, Aluminum Block and Heads, Orange/Chrome, Chevrolet, 6.2L LS3, Each
Part Number: LSS-GMLS9005
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series 14 in. Classic, Long Block, Assembled, Hydraulic Roller, Internal Balance, Aluminum Block and Heads, Chevrolet, 6.2L LS3, Each
Part Number: LSS-GMLS9006
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series 14 in. Classic, Long Block, Assembled, Hydraulic Roller, Internal Balance, Aluminum Block and Heads, Chevrolet, 6.2L LS3, Each
Part Number: LSS-GMLS9010
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series Tri-Power, Long Block, Assembled, Hydraulic Roller, Internal Balance, Aluminum Block and Heads, Orange/Chrome, Chevy, 6.2L LS3
Part Number: LSS-GMLS9012
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series '63 Fuelie, Long Block, Assembled, Hydraulic Roller, Internal Balance, Aluminum Block and Heads, Orange, Chevy, 6.2L LS3, Each
Part Number: LSS-GMLS9020
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Crate Engine, Series '63 Fuelie, Long Block, Assembled, Hydraulic Roller, Internal Balance, Aluminum Block and Heads, Chevrolet, 6.2L LS3, Each
Part Number: LSS-GMLS9022
Not Yet Reviewed
Estimated Ship Date: Oct 9, 2025 if ordered today
Estimated Ship Date: Oct 9, 2025 if ordered today
This product may not be eligible for select promotional offers
Cylinder Head, Black Label, 70cc Combustion Chamber, Bare, 2.250 in. Intake Valve, 1.600 in. Exhaust Valve, Chevy, LS, Pair
Part Number: MML-CHLSX600232
Not Yet Reviewed
Estimated Ship Date: Nov 11, 2025 if ordered today
Estimated Ship Date: Nov 11, 2025 if ordered today
Cylinder Head, Black Label, 70cc Combustion Chamber, Bare, 2.165 in. Intake Valve, 1.600 in. Exhaust Valve, Chevy, LS3, Pair
Part Number: MML-CHLSX600237
Not Yet Reviewed
Estimated Ship Date: Nov 11, 2025 if ordered today
Estimated Ship Date: Nov 11, 2025 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
