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Texas Speed and Performance 408ci 6.0L LQ9 Short Block

Texas Speed and Performance 408ci 6.0L LQ9 Short Block "The Sledgehammer"

Regular price $5,999.99 Sale

Competition Use Only, Not Legal for Road Use

25-TSP408LQ9-STD-11 408ci 6.0L LQ9 Short Block "The Sledgehammer"

Gen IV LS-Series - In-Stock Short-Block Campaign: 

Introducing the all-new Sledgehammer 408! This is the latest release from our Brawler Series. This
heavy-duty iron block is ready to dish out the damage on the street or on the track. It has the cubes to
provide great naturally aspirated power, but also the strength needed for extensive boost.
The goal of our In-Stock Short Block project is to provide customers with high quality engine choices that
are ready to ship out in a few days. The same parts, machining, care and workmanship go into these
builds as our custom engine program. All engines are balanced, blueprinted and assembled in house, to
exacting TSP tolerances.

Sledgehammer build specifications:

  • 408ci / 6.6L Gen IV
  • GM Gen IV Iron 6.0L LQ9 Block
  • ARP Main Stud Kit
  • TSP 4.000” Forged Crankshaft – 58x Reluctor – 6-Bolt
  • TSP/Wiseco -3cc Flat Top or -11cc Dished Forged 4.030” Pistons – Boost or N/A – With Valve Reliefs
  • TSP 6.125” H-Beam Connecting Rods with ARP L19 Rod Bolts
  • 1000 HP Capable


  • Every short block comes equipped with a 58x crank reluctor wheel. If using in a 24x equipped Gen 3 Vehicle. You will need a Lingenfelter Crank Sensor Conversion Box located in the drop down box above. Part no. # L460065397


**Cylinder heads and Camshaft can be added if a complete Longblock is wanted. If so, feel free to give our sales team a call and we can help configure it to your setup! Still will ship out very quickly!**

***Shipping on motors is the only thing we don’t ship for free. Shipping cost will be calculated after the order is placed and sent in a separate invoice***




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