From the World 5.4 record holders comes one of our most popular shortblocks for F150/F250 and GT500 Customers. Handles Up to 1500RWHP!
*New Cast Iron 5.4 Block , torque plate bored and honed
*New 4340 Forged Crankshaft, includes additional heat treat w/micro polished journals at no extra charge
*New 4340 6.658 Manley Pro-series Billet Rods with ARP 2000 bolts ( These US made rods are shotpeened, magnafluxed and weight matched to bring you the finest I-beam rod available for your 5.4)
*New 2618 Alloy Forged Manley Pistons with Chromoly Pins (High or low compression) - simply the strongest piston available
*Total Seal file fit rings (precision file fit to your application, nitrous, blower, turbo or N/A)
*Clevite Competition series heat treated Rod and Main bearings
*ARP main stud kit for maintaining correct cap location under the hardest of loads
*Complete Pro Assembly and Balancing for the smoothest, highest revving shortblock available, Pre-Lubricated with MMR Mod Lube Assembly Lube and spin tested. Lastly 2 technicians sign off on your new engine prior to packaging and crating.
*6 Month Warranty *Due to the custom nature of MMR shortblocks ALL customers paying with a credit card will be billed when the order is placed (prior to engine assembly and shipping), All MMR shortblocks are non-refundable regardless if the item has shipped or not.