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Modular Head Shop 1200S 5.4L Short Block

MHS-541200S
Rated to 1200 HP - Perfect for 5.4L Shelby GT500 or Max Effort Lightning Applications. Cobra Jet Crank, Manley Billet I-Beam Rods, Custom Diamond Pistons, King XP Series Bearings, ARP Main Studs.
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Pricing: $6,600.00

Description

Modular Head Shop 1200S 5.4L Short Block - Rated at 1200 HP 

  • Race Prepped and Fully Machined 5.4L NVH Iron Block 
  • Cobra Jet Crankshaft with Kinetik Motorsports Stud 
  • Manley Pro Series Billet I-Beam Rods with 7/16" ARP 2000 Bolts 
  • Custom Diamond Full Round Pistons 
    • Zero Deck Design
    • 2V, 3V or 4V Valve Reliefs
    • Lateral Gas Ports 
    • Trend .200" Wall Tool Steel Pins 
    • Total Seal AP Steel Ring Set - Napier 2nd Rings 
  • 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 a great choice earlier iron block GT500 and max effort lightning applications. The Custom Diamond Pistons used in this Short Block use a 1.330" Compression Height instead of the typical 1.220" Compression Height. This brings the pistons up .110" in the bore, with approx. .010" Piston to deck clearance on a standard 5.4L deck. By raising the crown of the piston closer to the top of the deck, combustion efficiency is drastically improved. These Pistons will come with Valve Reliefs specific to your application and we have a variety of available compression ratios for pretty much any cylinder head combo. 
 
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. 
 
 
Options:
  • Install Billet Oil Pump Assembly - $290.00
  • Add Ceramic Dome Coating - $240.00
No Crate Fee. Buyer pays actual Freight charges. Normally $350.00-$450.00 for Residential Delivery w/ Liftgate 

 

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