Your Source for Mustang
Performance Parts and Accessories
                                         Order Toll Free   866-997-3991



MODULAR SHORT BLOCKS 
 

306 - 331 - 347 - 393 - 408  HMS Race Demon Ford Short Blocks are Custom hand built for
 Dependable high Horse Power performance!  We recommend these for all high horsepower
applications from street / strip to all out competition. If you're running a forced induction or
nitrous combination in your Ford, we have the combo for you. 331 347 408 and more Forged
 Short Blocks to Support Over 1000HP! All HMS Short Blocks are custom hand built for each and
 every specific application. We do not have production built short blocks sitting on a shelf, waiting
to be sold. Please expect 1-4 weeks for build time.

HMS DEMON RACE SERIES SHORT BLOCK

HMS Race Demon Ford Series Short Blocks Include

  • Seasoned Hydraulic Roller 302 Block, 351 NON Roller Block, FRPP or New Dart Block

  • Bored and Honed with Torque Plates finished honed bore size

  • Line Bore checked and machined to proper specs

  • Deck is squared to the mains

  • Cylinders are stroker notched where applicable

  • Block is thermo-cleaned

  • New brass freeze plugs, oil galley plugs

  • New Durabond cam bearings

  • Blueprint sheet with all clearances and tolerances

  • Full balance sheet with bob weight

 Come fully assembled and balanced with all brand new components- 4340 forged steel crankshaft,
4340 forged steel H-beam rods with ARP capscrew bolts, Probe
Forged 2618 Aluminum alloy
pistons and full floating lightweight wrist pins and double spiro locks for durability, Tri-Metal
Bearings and Performance Moly Rings
, ARP Main studs with Main Girdle system (on stock block). 
 

Below is our base level Race Demon Short Blocks, we have many choices and upgrades
 available, such as bore size, custom Dish or Dome pistons, Billet crankshafts, Billet
 rods, Dart and FRPP Blocks and more. We encourage you to call us and we will be
happy to sit down and talk with you. We know buying a Hi Performance 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.

331 RDS

Utilizes seasoned factory block

Comp. Ratio
9.81

  • Scat 4340 forged Steel 3.250" Stroker Crankshaft  

  • 4340 forged steel H-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 0 internally 

retail from: $2695.95

Sale Price from: $2575.00

 


347 RDS

Utilizes seasoned factory block

Comp. Ratio
10.21

  • Scat 4340 forged Steel 3.40" Stroker Crankshaft  

  • 4340 forged steel H-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 0 internally 

retail from: $2695.95

Sale Price from: $2575.00
 

 


393W RDS

Utilizes seasoned factory block

Comp. Ratio
11.49

  • Scat 4340 forged Steel 3.85" Stroker Crankshaft  

  • 4340 forged steel H-beam 6.200" 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 0 internally 

retail from: $2895.95

Sale Price from: $2695.00
 

 


408 / 418W RDS

Utilizes seasoned factory block

Comp. Ratio
12.30

  • Scat 4340 forged Steel 4.00" Stroker Crankshaft  

  • 4340 forged steel H-beam 6.200" 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 0 internally 

retail from: $2895.95

Sale Price from: $2695.00
 

 

331 FRDS

Utilizes New Dart Iron 4bolt main Block

Comp. Ratio
9.81

  • Scat 4340 forged Steel 3.250" Stroker Crankshaft  

  • 4340 forged steel H-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

  • Clevite race Rod and Main Bearings

  • Assembled and internally balanced

retail from: $5195.95

Sale Price from: $4975.00

 

347 FRDS

Utilizes New Dart Iron 4bolt main Block

Comp. Ratio
10.21

  • Scat 4340 forged Steel 3.40" Stroker Crankshaft  

  • 4340 forged steel H-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

  • Clevite race Rod and Main Bearings

  • Assembled and internally balanced

retail from: $5195.95

Sale Price from: $4975.00
 

 


393W  FRDS

Utilizes New Dart Iron 4bolt main Block

Comp. Ratio
11.49

  • Scat 4340 forged Steel 3.85" Stroker Crankshaft  

  • 4340 forged steel H-beam 6.200" 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

  • Clevite race Rod and Main Bearings

  • Assembled and internally balanced

retail from: $5195.95

Sale Price from: $4975.00
 

 


408 / 418W  FRDS

Utilizes New Dart Iron 4bolt main Block

Comp. Ratio
12.30

  • Scat 4340 forged Steel 4.00" Stroker Crankshaft  

  • 4340 forged steel H-beam 6.200" 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

  • Clevite race Rod and Main Bearings

  • Assembled and internally balanced

retail from: $5195.95

Sale Price from: $4975.00
 

 

Dart Iron Block                    Oliver Billet Rod

Custom Probe Pistons     Scat Billet Crank

   

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 and cranks are available!

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

 

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