AT Mesa Balancing Racing Engines LLC all of our Street and Strip Short Blocks for 4.6 engines are a solid foundation to add horsepower with reliability to your high performance vehicle. These short blocks include: Remanufactured Ford OEM Fully Machined Romeo or Windsor engine blocks and new 4340 forged crankshaft (check your flywheel for fitment), Forged 4340 H Steel connecting rods and your choice of Forged pistons and pins (see piston option and prices in the dropdown menu ), Plasma Moly rings, and High Performance King , Clevite or ACL rod and main bearings. These short blocks are rated up to 600hp safely, although we customers making more power with these same packages. a We can build these with a variety of pistons to obtain the compression ratio of your choice. (Please use the compression ratio chart below to see which pistons to choose for your compression decision and then pick the proper pistons in the dropdown box).
Each short block is surface prepared by steel shot ,machined , balanced, fit in house and hand assembled as ordered to insure order accuracy . The blocks are precision torque plate honed for proper piston to wall clearance, parallel decked and the crankshaft tunnel align honed for proper fitment magnetic particle inspected to make sure there are no cracks and cleaned before assembly. The rotating assemblies are dynamic balanced to racing specifications and rings file fit to your specific application then meticulously assembled into the block. Bearing clearances are checked and set for performance use and the rings are perfectly filed to fit for optimum seal.
NOTE: THESE SHORTBLOCKS ARE CUSTOM BUILT FOR YOUR APPLICATION AND TYPICALLY TAKE 6-8 WEEKS. Full NON-REFUNDABLE payment is required up front for this CUSTOM part. If you have special needs, options, or time frame you must CONTACT us BEFORE ordering. All sales on Short Blocks are FINAL.