MMR 5.4 Street Mod 1000 Forged shortblock - Lightning/GT500/F150

Starting at: $4,999.99

Rated up to 1000 RWHP!

*New Cast Iron 5.4. Block Block , torque plate bored and Honed

*New Forged stroke Crankshaft w/micro polished journals at no extra charge -the strongest 5.4 crank available!

*New 4340 6.658 Manley H-beam Rods ( These US made rods are shotpeened, magnafluxed and weight matched to bring you the finest H-beam rod available for your 5.4

*New Forged Manley pistons with Chromoly pins

*Total Seal file fit rings (precision file fit to your application, nitrous, blower, turbo or N/A)

*Clevite Rod and Main bearings

*Complete Pro Assembly and Balancing for the smoothest, highest revving shortblock available, Pre-Lubricated with Royal Purple Assembly Lube and spin tested.


*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.

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  • Model: 501000
  • Manufactured by: MMR

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Available Upgrades

5.4 Block Options

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