306 331 347 393 408 Street Demon Ford Short Blocks are a high performance, low cost alternative
 to a stock rebuild or factory crate motor.  We recommend these engines for street/strip, daily driven,
 low maintenance, moderate horsepower... up to 500hp , or moderate power adder applications. 

 Compare the difference of our internal components with others....you will see that we offer the best
 short block for your money! We feel we can offer a better product, but even more so, we believe we
offer a superior service and let's face it, service in the high performance market is very important!

 HMS Demon Street Series Short Blocks Include

• Seasoned Hydraulic flat tappet / Roller 302 Block or 351 NON Roller Block

• Bored and Honed with Torque Plates finished honed bore size

• Line Bore checked and machined to spec

• Deck is squared to the mains

• Cylinders are notched for strokers where applicable

• Block is thermo-cleaned

• New brass freeze plugs, taped oil galley plugs

• New Durabond cam bearings

• Blueprint sheet with all clearances and tolerances

• Full balance sheet with bob weights

 Come fully assembled and balanced with all brand new components- Scat 9000 Series Pro Comp
Cast Steel Crank, Scat Premium 4340 forged* I-Beam Rods with doweled caps with ARP 8740 3/8
or 7/16 Cap Screw Bolts and Bushed ends for floating wrist pins, Forged Probe 2618 t-61 Aluminum
 alloy flat top pistons for both inline and Twisted wedge heads, Full floating lightweight wrist pins and
 double spiro locks for durability, Tri-Metal Bearings and Performance Moly Rings.

Below is our base level Street Demon Short Blocks, we have many choices and upgrades
 available, such as bore size, compression ratio, main girdles, ARP bolts /Studs, H-Beam
connecting rod, flywheels, harmonic balancers and cylinder heads. We encourage you to
call us and we will be happy to sit down and talk with you. We know buying a short block
can be an expensive purchase and the more we talk the better we both can put together an
application that suits you specific needs.

We hope to hear from you soon......call toll-free  866-997-3991.

347 SDS

Comp. Ratio
10.21

• Scat Cast Steel 3.40" Stroker Crankshaft  

• 4340 forged steel I-beam 5.400" connecting
  rods with ARP cap screw bolts, bushed ends

• Probe 2618 forged flat top pistons (fits TW or
  Inline cylinder heads) , 0.030 - 0.040 bore

• Total Seal or Perfect Circle Moly File fit rings

• Clevite77 Rod and Main Bearings

• Assembled and externally balanced to 28oz
   or 50oz

Our Price from: $1895.00
 

393W / 408 SDS

Comp. Ratio
11.45

• Scat Cast Steel 3.85" Stroker Crankshaft  

• 4340 forged steel I-beam 5.955" connecting
  rods with ARP cap screw bolts, bushed ends

• Probe 2618 forged flat top pistons (fits TW or
  Inline cylinder heads) , 0.030 - 0.040 bore

• Total Seal or Perfect Circle Moly File fit rings

• Clevite77 Rod and Main Bearings

• Assembled and externally balanced to 28oz
   

Our Price from: $2075.00
 

Please call us for your specific combination needs  866-997-3991

Compression Ratios shown here are just one of the many possible ratios we have. If you are running a high boosted application, we do have custom dished pistons available! What to run a high compression n/a engine, no problem, custom Ford dome pistons are available! Call us today to go over your specific needs!  
Internals Shown are just one of many options that we have. Custom Pistons, Rods, cranks and ARP hardware upgrades are available!

* We use Scat's Premium 4340 forged I-Beam connecting rods, unlike others that use an inferior 5140 material. These Premium rods have ARP Cap Screw bolts for more strength to step up to more horsepower. Special doweled cap for perfect cap-to-rod alignment resulting in increased strength and longer bearing life and bushed small ends for floating wrist pins!