Availability
A strong LS short block is the foundation for any LS engine project, whether you’re building up a high-horsepower 6.0 liter short block for an LS swap, or just putting...
A strong LS short block is the foundation for any LS engine project, whether you’re building up a high-horsepower 6.0 liter short block for an LS swap, or just putting together a reliable LS1 for your work truck. And with dozens of LS short block options available from Summit Racing, you’re able to find the right LS short block for your application.
Available in popular displacements, including 5.3, 5.7, 6.0, 6.7 and 7.0 liters, there are plenty of Chevy LS short blocks to choose from, which means you’ll be able to build your own equivalent to popular LS engines like the potent LS2 and LS3, the granddaddy LS1, and even...
A strong LS short block is the foundation for any LS engine project, whether you’re building up a high-horsepower 6.0 liter short block for an LS swap, or just putting together a reliable LS1 for your work truck. And with dozens of LS short block options available from Summit Racing, you’re able to find the right LS short block for your application.
Available in popular displacements, including 5.3, 5.7, 6.0, 6.7 and 7.0 liters, there are plenty of Chevy LS short blocks to choose from, which means you’ll be able to build your own equivalent to popular LS engines like the potent LS2 and LS3, the granddaddy LS1, and even the fire-breathing 427 LS7.
What is a short block? While there may be some variances between the different crate engine manufacturers, a short block typically means the package includes the engine block and rotating assembly (crankshaft, pistons, rods, etc.). In other words, any of the LS short blocks you see here would be an excellent starting point for your LS engine build. You add your own cylinder heads, intake, ignition, and everything else—all tailored to your specific engine goals.
Check out all of your LS short block options here, and then find the one that best suits the LS engine project you’ve got in your driveway. Start shopping now, at Summit Racing.
Short Block Engine, LM7 383, Chevy LS, Forged Crank, Forged Piston, Dish, +15 Piston Head Volume, I-Beam Rods, 6-Bolt Main, Internal Balance, Each
Part Number: HPE-SP78
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Assembly, Short Block, LQ9 6.0L, Hypereutectic Flat Top Pistons, Chevy, Small Block LS, Each
Part Number: HPE-SP19-F
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Assembly, Short Block, LQ4, Chevy, Small Block LS, 364, Each
Part Number: HPE-SP19
Estimated Ship Date: Today
Estimated Ship Date: Today
Short Block Engine, Chevy LS 408 Short Block, Remanufactured, Assembled, Internal Balance, 9.240 in. Deck Height, Chevrolet, 6.7L, Each
Part Number: HPE-SP36-B
Not Yet Reviewed
Estimated Ship Date: Oct 7, 2025 if ordered today
Estimated Ship Date: Oct 7, 2025 if ordered today
Chevy LS 408 Boosted/NOS Short Block 58 Tooth +10cc Dish
Part Number: HPE-SP26-B
Estimated Ship Date: Today
Estimated Ship Date: Today
Chevy LS 408 Boosted/NOS Short Block 24 Tooth +18cc Dish
Part Number: HPE-SP38-B
Estimated Ship Date: Today
Estimated Ship Date: Today
ATK High Performance Chevy LS 408 Short Block
Part Number: HPE-SP38
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Chevy LM-7/LS 347CI Short Block +3.2cc Flat Top Pistons 24 Tooth
Part Number: HPE-SP75
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Assembly, Short Block, 24 Tooth Reluctor Wheel, Hypereutectic Pistons, LM7, 330 CID, Chevy, LS, Each
Part Number: HPE-SP109
Not Yet Reviewed
Estimated Ship Date: Oct 13, 2025 if ordered today
Estimated Ship Date: Oct 13, 2025 if ordered today
Engine Assembly, Short Block, Chevy, Small Block LS, 408, Each
Part Number: HPE-SP26
Not Yet Reviewed
Estimated Ship Date: Oct 6, 2025 if ordered today
Estimated Ship Date: Oct 6, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 58 Tooth Reluctor, +29cc Dish Pistons, Each
Part Number: HPE-SP36-G4-B
Not Yet Reviewed
Estimated Ship Date: Oct 6, 2025 if ordered today
Estimated Ship Date: Oct 6, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, Nitrous/Boost, 58 Tooth Reluctor, -4cc Flat Top Pistons, Each
Part Number: HPE-SP32-G4-B
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 58 Tooth Reluctor, +10cc Dish Pistons, Each
Part Number: HPE-SP26-G4
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +4cc Flat Top Pistons, Each
Part Number: HPE-SP39-G4
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Engine Assembly, Short Block, 58 Tooth Reluctor Wheel, Hypereutectic Pistons, LM7, 330 CID, Chevy, LS, Each
Part Number: HPE-SP115
Not Yet Reviewed
Estimated Ship Date: Oct 13, 2025 if ordered today
Estimated Ship Date: Oct 13, 2025 if ordered today
Engines, Dart Short Block, 427 C.I.,, Cast Iron, 4.125 Bore, 4.00 Stroke, Flat Top Forged Aluminum Pistons, I Beam Connecting Rod, LS, Chevy, Each
Part Number: HPE-SPE4271800
Not Yet Reviewed
Estimated Ship Date: Sep 24, 2025 if ordered today
Estimated Ship Date: Sep 24, 2025 if ordered today
Chevy LS 408 Boosted/NOS Short Block 58 Tooth -18cc Dish
Part Number: HPE-SP31-B
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 58 Tooth Reluctor, +18cc Dish Pistons, Each
Part Number: HPE-SP31-G4
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
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: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
ATK High Performance Chevy LS 408 Short Block
Part Number: HPE-SP36
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 58 Tooth Reluctor, +29cc Dish Pistons, Each
Part Number: HPE-SP36-G4
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Engine Assembly, Short Block, LM7, 5.7/347, 3.903 in. Bore, 3.622 in. Stroke, Forged Dished Pistons, I-Beam, Chevy, LS, Each
Part Number: HPE-SP76-B
Not Yet Reviewed
Chevy LM7 383CI Short Block +8cc Dished Pistons 24 Tooth
Part Number: HPE-SP77
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Chevy LM7 383CI Short Block +32cc Dished Pistons 24 Tooth
Part Number: HPE-SP79
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
Short Block, Chevrolet LS Gen IV 364, Internally Balanced, 24 Tooth Reluctor, +3.2cc Flat Top Pistons, Each
Part Number: HPE-SP93-G4
Not Yet Reviewed
Estimated Ship Date: Sep 18, 2025 if ordered today
Estimated Ship Date: Sep 18, 2025 if ordered today
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