I just wanted to share this here first! These are the same rotating assemblies we've been using in our built 5.4L GT500 aluminum shortblocks, Cobra Jet engines, and other custom applications using the 2011-2012 Specific GT500 aluminum block. These components have been tested and proven on our Dyno and at the track to support the numbers we claim! JDM 5.4L Aluminum GT500 Shortblock Rebuild Kit $2199.00 Adding the prices up on these parts individually and you will come up with a parts list nearing $2500. We compacted everything together to rebuild your shortblock for only $2199.00 save nearly $300 for the consumer! Call us today at 732-780-0770 Looking too bullet proof your 2011-2012 Shelby GT500 5.4L Aluminum engine? Team JDM has the answer for you with their 1200 HP rated Shortblock rebuild kit specifically designed for the 2011-2012 GT500 5.4L Aluminum engine block. The factory engine is capable is very large amounts of power and torque but the Aftermarket has proven it is easy to surpass even these levels making the stock connecting rods and other internals a weak point. Manley heavy duty H beam R series rods with ARP 2000 bolts replace the factory powder cracked I beam units. Calico coated Rod bearings and Main bearings support the rotating components and promote less heat and friction then the OEM parts. The factory cylinder bore spray-in liners in the Aluminum block are very strong but it is a very thin coating which doesn’t allow much room for over boring. Custom Mahle forged pistons designed to be used with the factory bore dimensions for a direct drop in application. For engine blocks that have been run already a .001-.002” hone is acceptable for clearance, any more and the block will require sleeves. JDM sourced a Custom package of Total Seal rings help to seal thing up nice and tight to help make Horsepower. These are the same pistons and components used in Team JDM NHRA Cobra Jet Mustangs making 1200+ HP setting World Record’s a 1/4 mile at a time! Manley H beam Rods w/ ARP 2000 bolts Mahle Forged NHRA spec Pistons Total Seal Custom Ring Package Calico Coated Main Bearings Calico Coated Rod Bearings New Main hardware Compliment this kit with a JDM Engineering GT500 O Ringed Oil pump w/ TSS Billet gears pre-installed!!