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RallisSpec FA20 Series Shortblock
From $4,350.00
To $7,995.00
SKU
RallisSpec FA20 Series Shortblock
Every short block is professionally assembled in our dedicted engine building room by our in-house builder who has over 20 years of motorsport level Subaru engine experience and has built hundreds of Subaru high performance engines. Every short block is blueprinted to carefully designed specifications that balance extended service life with extreme power capabilities. Every dimension is logged and a build spec sheet is provided for reference. The block is assembled with all typical short block hardware, plugs, and oil separator plate.
| FA20 Series | Standard | Pro | Pro + |
|---|---|---|---|
| Block Case Type | FADIT | FADIT Closed Deck | FADIT Closed Deck |
| Block Hardware | OEM | OEM | ARP |
| Copper O-Ring | ✓ | ||
| Bore Size | 86.0mm | 86.25mm | 86.25mm |
| OEM Nitrided Crankshaft | ✓ | ✓ | ✓ |
| Connecting Rods | 4340 H-STD | 4340 PRO Tri-Beam | 4340 PRO Tri-Beam |
| Rod Bolts | ARP2000 | ARP L19 | ARP L19 |
| Pistons | Manley | Manley HD | Manley HD |
| Piston Pins | 0.150in | 0.210in | 0.210in |
| Main Bearings | ACL | ACL | ACL |
| Rod Bearings | ACL | ACL | ACL |
| Head Stud Threads | 11mm | 1/2in-13 | 14 x 2.00mm |
| Balance Precision | 1g | 1/2g | 1/3g |
| Compression Ratio | 10:1 | 10:1 | 10:1 |
| [NOTE] All shortblocks are built to order. Allow for build and shipping time. | |||
[ Excluded From Shipping Specials ]
[ Excluded From Shipping Specials ]
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
| SKU | RallisSpec FA20 Series Shortblock |
|---|---|
| Brand | RalliSpec |
