LS3 Aluminum Long Block Assembly

LS3 Aluminum Long Block Assembly

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All Shortblock engine parts are in stock. Depending on the Longblock configuration, please allow up to 2-3 weeks for the entire assembly to be completed.

General Information

Our Longblocks are made with only the best parts and are built to exact tolerances and specifications. All Longblocks are assembled in-house by our professional engine builder. We have over 30 years of experience building and racing Small Block Chevrolet engines. From 500 horsepower NA street cars to 2000+ horsepower FI drag cars, we have the experience needed to build your ultimate engine. 

Shortblock Specs

Brand new GM LS3 Block
K1 Technology Crankshaft
K1 Technology Connecting Rods
ARP Rod Bolts
Diamond Pistons
Total Seal Piston Rings
ARP Main Studs
Clevite H-Series Rod & Main Bearings

For more information on our Shortblocks, visit our Shortblock page here

Custom Options

We have many different custom options available for you to choose from. Please contact us for more details. You can reach us at 205-267-6387 or


Shipping charges are usually between $150-250 and will be billed once the Shortblock has shipped. For international orders, please contact us for a quote.


With our 427ci LS3 Shortblock, Trickflow 235cc CNC Ported Cylinder Heads, HM1 Camshaft, and FAST 92mm Intake, we made 603 rwhp 583 rwtq to the wheels on our chassis dyno!

Cylinder Heads
Head Bolts/Studs
Head Gaskets
Rocker Arms
Timing Chain
Base Price: $10,100.00 Customized Price: $10,100.00
  • 418ci LS3 Shortblock
  • 11:1 CR - Diamond Flat Top
  • Trickflow 235cc CNC Ported Cylinder Heads
  • ARP Head Bolts
  • GM MLS Head Gaskets (.052")
  • Yella Terra Ultralite Roller Rocker Arms (1.7 Ratio)
  • HM1 Camshaft
  • Comp Magnum Pushrods
  • Patriot LS2 Double Roller Timing Set
  • GM LS7 Lifters