LS3 377CI Shortblock

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Product Overview

MAD LS3 1000HP 377CI 10.5:1 compression short-block package using your supplied LS3 engine block. Pair with our MAD LS3 cylinder heads for the ultimate combination (Engine block cores available upon request for a faster turnaround. Call or email for details.)

-Callies CCW Crankshaft

-Callies connecting rods

- CP/Carillo or Wiseco pistons with upgraded thick wall wrist pins and ring pack 

-ACL Main Bearings

-ACL Rod Bearings

-ARP Main Studs


 Here at Modern Airflow Dynamics we put the same care and attention to detail into every short block we build and machine. A blueprint sheet will be filled out with all of the engine block measurements and clearances as well as a balancing sheet with your specific crankshaft information on it.

-Inspection and cleaning of engine block checking for any deficiencies
-Deburring of entire engine block removing sharp edges as well as possible stress risers
-Inspection of connecting rods to include measuring large and small ends and ensuring consistent rod bolt stretch.
-Inspection of pistons to include weight matching (.5-gram race balance) and ensuring consistent wrist pin bore size by measuring bores and honing when necessary
-Inspection and measuring of wrist pins.
-Inspection/machining of crankshaft to include polishing of journals and chamfering of oil holes for improved oiling to bearings
-Balancing of crankshaft beyond ISO standards using a three-plane analysis on our state-of-the-art CWT Balancing Machine. Balancing to 1/8 oz-in tolerance is our standard.
-Line Honing of Main Housing using the ARP main studs
-True Parallel decking of block using BHJ tru block blueprinting fixture correcting improperly machined deck surfaces, commonly caused by factory machine tolerances and production line inaccuracies while setting proper deck height
- Torque plate honing of cylinders with our state of the art Sunnen diamond hone
-Verification of cylinder finish using a profilometer
-Clearancing of block for stroke as needed
- File Fit piston ring packs for each custom application
- Set proper bearing clearance for main and rod bearings
- In depth final cleaning of engine block ensuring no debris left behind from machining which happens to be the number one cause of bearing failure
-Professional assembly in our climate controlled clean assembly room


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