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Modular Head Shop 1500R 4.6L Competition Short Block

Rated at 1500 HP. 3v Aluminum Block, Darton Sleeves, Manley Forged 4340 Crankshaft, Manely Billet I-Beam Rods, Custom Diamond Pistons, Trend H-13 Tool Steel Pins, ARP Main Studs, King XP Series Bearings
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Pricing: $9,300.00


Modular Head Shop 1500R 4.6L Competition Short Block 

  • Race Prepped and Fully Machined 2005+ Nemak / Aluminator Block 
  • Darton Solid Flanged Ductile Iron Sleeves - 3.650" Final Bore 
  • Manley Forged 4340 Center Counterweighted Crankshaft - Stock Stroke 
  • Manley Pro Series Billet I-Beam Rods with 7/16" ARP 2000 Bolts 
  • Custom Diamond Pistons
    • Mod2K or Full Round Forging - Any Volume
    • Trend H-13 Tool Steel Wrist Pins 
    • Lateral Gas Ports 
    • Total Seal AP Steel Piston Rings - Napier 2nd
    • Configured for 2V, 3V or 4V Cylinder Heads 
  • King XP Series Main Bearings 
  • King XPN Series Rod Bearings 
  • ARP Main Studs and Side Bolts 
  • Internal Balancing and Professional Assembly 
This Short Block is built with one thing in mind... Lots of Boost! This is the ultimate 4.6L short block for competition use and has been proven to hold over 1500 HP, reliabily. We use all the best available components, and hold the tolerances just as tight as any other short blocks we do. 
We take serious pride in balancing and blue printing all engines. Connecting Rods are balanced on both big and small ends to a tolerance of 0.1g, bobweights for crank balancing are built to a tolerance of 0.1g and the crankshaft is balanced to a final tolerance of 0.2g. All Bearing and Piston to wall clearances are measured and recorded to a tolerance of 0.0001" and critical measurements such as crankshaft end play, connecting rod side clearance and connecting rod bolt stretch are all checked during final assembly.

All of our Short Blocks are custom and built to order. One size does not fit all and quality takes time.
Please call or email us with any questions you may have about this Short Block and lead times. 
  • Upgrade to MHS 9/16" Crank Stud - $150.00 (includes ARP Hardware) 
  • Add Full Length Windage Tray - $100.00 (includes ARP Hardware) 
  • Install Billet Oil Pump Assembly - $290.00
  • Add Ceramic Dome Coating - $240.00
  • Add Receiver Grooves to Sleeve Flange for O-Rings or Top Fuel Hoops - $400.00
No Crate Fee. Buyer pays actual Freight charges. Normally $350.00-$450.00 for Residential Delivery w/ Liftgate 




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