Home > GM Crate Engines > LS Short Blocks > LQ4/LQ9 GEN III Short Blocks
The LQ4 engines were produced for the 2001-2007 Trucks. The LQ4 is one of the most popular engine swaps with its larger displacement and its cast iron block that will support big power! The LQ4 engines are very popular engines to swap into Muscle cars and any other LS Swap vehicle.
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Chevy LQ4 6.0L Short Block
ATK SP19 Chevy LQ4 6.0L Short Block OE Dish Pistons
Our Price (USD): $2,100.00

Great foundation for mild street build, or just replacement for a tired short block.
Chevy LS 408 Stroker Short Block 58 Tooth Reluctor Wheel
ATK SP26 LS 408CI Stroker Short Block +10cc Dish Pistons 58 Tooth
Our Price (USD): $3,813.00

This short block is built for all motor builds with higher compression but with the option of running pump gas it will hold up to 700HP.
Chevy LS 408 Stroker Short Block 24 Tooth Reluctor Wheel
ATK SP31 LS 408CI Stroker Short Block -18cc Dish Pistons 58 Tooth
Our Price (USD): $3,813.00

This short block is built with a mild compression ratio great for easy tuning on pump gas or running a small shot of nitrous. If used with nitrous there will be no warranty as there is more room for error with nitrous systems and tuning.
Chevy LS 408 Stroker Short Block 58 Tooth Reluctor Wheel
ATK SP32 LS 408CI Stroker Short Block -4cc Flat Top Pistons 58 Tooth
Our Price (USD): $3,890.00

This short block is built for all motor builds with compression ratios that way require race gas; it can handle up to 700HP.
Chevy LS 408 Stroker Short Block 58 Tooth Reluctor Wheel
ATK SP36 LS 408CI Stroker Short Block -29cc Dish Pistons 58 Tooth
Our Price (USD): $3,890.00

This short block is built with lower compression perfect for superchargers or turbochargers also will handle up to 700hp.
Chevy LS 408 Stroker Short Block 24 Tooth Reluctor Wheel
ATK SP37 LS 408CI Stroker Short Block +10cc Dish Pistons 24 Tooth
Our Price (USD): $3,890.00

This short block is built for all motor builds with higher compression but will still run on pump gas it will hold up to 700HP.
Chevy LS 408 Stroker Short Block 24 Tooth Reluctor Wheel
ATK SP38 LS 408CI Stroker Short Block - 18cc Dish Pistons 24 Tooth
Our Price (USD): $3,890.00

This short block is built with a mild compression ratio great for easy tuning on pump gas or running a small shot of nitrous. If used with nitrous there will be no warranty as there is more room for error with nitrous systems and tuning.
Chevy LS 408 Stroker Short Block 24 Tooth Reluctor Wheel
ATK SP39 LS 408CI Stroker Short Block +4cc Flat Top Pistons 24 Tooth
Our Price (USD): $3,890.00

This short block is built for all motor builds with compression ratios that way require race gas; it can handle up to 700HP.
Chevy LS 408 Stroker Short Block 24 Tooth Reluctor Wheel
ATK SP40 LS 408CI Stroker Short Block -29cc Dish Pistons 24 Tooth
Our Price (USD): $3,890.00

This short block is built with lower compression perfect for superchargers or turbochargers also will handle up to 700hp.Your engine may not necessarily come with all components listed, but they are listed as ourrecommendations of parts to run for optimal performance.
ATK SP26-B Crate Engine
ATK SP26-B LS 408CI Stroker Short Block +10cc Dish Pistons 58 Tooth Boost/Nos Ready
Our Price (USD): $4,199.00

This short block is built for engines that are going to be running Boost or Nitrous. It has upgraded ARP main studs, ARP 2000 rod bolts and Total Seal CS AP ring package with Steel rings gapped accordingly for engines pushing 10+ PSI. Due to so many variables, we do not rate these for Power or Boost limits.