Our Road Warrior 4.6 Short Blocks are the perfect choice for your street or racing vehicle for up to 1200+ horsepower reliability. These short blocks include: FORD OEM Fully machined 4.6 Romeo engine blocks, Forged 4340 Steel 8 bolt crankshafts (check your flywheel for fitment), ModMax Forged 4340 Steel H-Beam connecting rods with ARP2000 bolts, your choice of Forged pistons and pins (see the dropdown box for choices), Plasma Moly rings, and High Performance King rod and main bearings. These short blocks are rated up to 1200hp with the H-Beam rods but with the upgraded Billet I-Beam rods (up to 2000HP) and Stainless Steel Rings these blocks can take a lot more. (See the optional rod choices and ring upgrades to get the components necessary for your application.) In addition we can build these with a variety of piston dish volumes for the compression ratio of your choice. (Please use the compression ratio chart below to see which pistons to choose for your compression decision and then pick the proper pistons in the dropdown box).
Each shortblock is hand assembled and machined as ordered to insure quality. The blocks are precision honed for proper piston to wall clearance, checked and cleaned before assembly. The rotating assemblies are completely internally balanced to racing specifications and then meticulously assembled into the block. Bearing clearances are checked and set for performance use and the rings are perfectly filed to fit for optimum seal. If you choose the main stud option we also install the main studs and line hone for a perfect crank bore as studs change the roundness of the main saddles.
SPECIAL NOTES FOR 3 VALVE ENGINES WITH THIS SHORTBLOCK:
IF YOU WILL BE USING 3V CYLINDER HEADS YOU MUST CHOOSE 3V SPECIFIC PISTONS FROM THE DROPDOWN BOX OR SEVERE DAMAGE WILL OCCUR!!
3V ENGINES USE SPECIFIC MOTOR MOUNTS THAT DO NOT BOLT UP DIRECTLY TO THIS BLOCK. YOU WILL NEED TO GET MOTOR MOUNT ADAPTORS TO USE OLD STYLE 2V-4V BLOCKS WITH LATE MODEL 3V MOTOR MOUNTS.
THERE MAY BE SOME FITMENT ISSUES ON TIMING COVER AND OTHER ACCESSORIES THAT MAY REQUIRE SOME CUSTOM LABOR TO WORK CORRECTLY - BUYER ASSUMES ALL RESPONSIBILITY FOR FITMENT.
NOTE: THESE SHORTBLOCKS ARE CUSTOM BUILT FOR YOUR APPLICATION AND TYPICALLY TAKE 6-8 WEEKS. Full NON-REFUNDABLE payment is required up front for this CUSTOM part. If you have special needs, options, or time frame you must CONTACT us BEFORE ordering. All sales on Short Blocks are FINAL.NOTE: PLEASE SEE THE CHART BELOW FOR COMPRESSION RATIO OPTIONS SO YOU CAN CHOOSE THE CORRECT PISTONS!
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| Piston Choice | Trickflow 2V 38cc | 2V PI Heads 42cc | Trickflow 2V 44cc | 2V-3V-4V 48cc | 2V-3V-4V 50cc | 2V-3V-4V 51cc | 2V-3V-4V 52cc | 2V-4V 53cc |
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| 2V-4V Mahle 0cc | 13.8 | 12.7 | 12.3 | 11.5 | 11.1 | 10.9 | 10.7 | 10.6 |
| 2V-4V Mahle 16cc | 10.4 | 9.9 | 9.6 | 9.1 | 8.9 | 8.8 | 8.7 | 8.6 |
| 2V-4V Ross 0cc | 13.8 | 12.7 | 12.3 | 11.5 | 11.1 | 10.9 | 10.7 | 10.6 |
| 2V-3V-4V Ross 6cc | 12.3 | 11.5 | 11.1 | 10.4 | 10.1 | 10.0 | 9.9 | 9.7 |
| 2V-3V-4V Ross 14cc | 10.7 | 10.1 | 9.9 | 9.3 | 9.1 | 9.0 | 8.9 | 8.8 |
| 2V-4V Ross 16cc | 10.4 | 9.9 | 9.6 | 9.1 | 8.9 | 8.8 | 8.7 | 8.6 |
| 2V-3V-4V Wiseco 6cc | 12.3 | 11.5 | 11.1 | 10.4 | 10.1 | 10.0 | 9.9 | 9.7 |
| 2V-3V-4V Wiseco 13cc | 10.9 | 10.3 | 10.0 | 9.5 | 9.2 | 9.1 | 9.0 | 8.9 |
| 2V-3V-4V Wiseco 16cc | 10.4 | 9.9 | 9.6 | 9.1 | 8.9 | 8.8 | 8.7 | 8.6 |
| 2V-3V-4V Wiseco 20cc | 9.9 | 9.3 | 9.1 | 8.7 | 8.5 | 8.4 | 8.3 | 8.2 |
| 2V-4V Manley 0cc | 13.8 | 12.7 | 12.3 | 11.5 | 11.1 | 10.9 | 10.7 | 10.6 |
| 3V Manley 6.5cc | -- | -- | -- | 10.4 | 10.1 | 9.9 | 9.8 | -- |
| 2V-4V Manley 11cc | 11.3 | 10.6 | 10.3 | 9.7 | 9.5 | 9.3 | 9.2 | 9.1 |
| 3V Manley 14cc | -- | -- | -- | 9.3 | 9.1 | 9.0 | 8.9 | -- |
| 2V-4V Manley 18cc | 10.1 | 9.6 | 9.3 | 8.9 | 8.7 | 8.6 | 8.5 | 8.4 |
| 2V-4V Manley 23cc | 9.5 | 9.0 | 8.8 | 8.4 | 8.2 | 8.1 | 8.0 | 7.9 |
| 3V Diamond .06cc | -- | -- | -- | 11.4 | 11.1 | 10.9 | 10.7 | -- |
| 2V-4V Diamond 2cc | 13.2 | 12.3 | 11.9 | 11.1 | 10.7 | 10.6 | 10.4 | 10.3 |
| 2V-4V Diamond 5.2cc | 12.5 | 11.6 | 11.2 | 10.6 | 10.2 | 10.1 | 10.0 | 9.8 |
| 3V Diamond 6cc | -- | -- | -- | 10.4 | 10.1 | 10.0 | 9.9 | -- |
| 2V-4V Diamond 11.5cc | 11.2 | 10.5 | 10.2 | 9.7 | 9.4 | 9.3 | 9.2 | 9.0 |
| 2V-3V-4V Diamond 15cc | 10.6 | 10.0 | 9.7 | 9.2 | 9.0 | 8.9 | 8.8 | 8.7 |
| 2V-3V-4V Diamond 19cc | 10.0 | 9.5 | 9.2 | 8.8 | 8.6 | 8.5 | 8.4 | 8.3 |
| 2V-4V CP/Modmax 0cc | 13.8 | 12.7 | 12.3 | 11.5 | 11.1 | 10.9 | 10.7 | 10.6 |
| 2V-3V-4V CP/Modmax 9cc | 11.7 | 10.9 | 10.6 | 10.0 | 9.7 | 9.6 | 9.5 | 9.3 |
| 2V-4V CP/Modmax 17cc | 10.3 | 9.7 | 9.5 | 9.0 | 8.8 | 8.7 | 8.6 | 8.5 |
