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Every block is professionally assembled in our dedicted engine building room by RalliSpec's in-house builder who has over 20 years of motorsport level Subaru engine experience and has built hundreds of Subaru high performance engines. Every 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.
[NOTE] Long Blocks Consists of the short block fitted with complete heads, oil pump, valve covers, and cam seals. Long blocks DO NOT include any timing components (cam gears, idlers, pulleys, belts, covers, tensioners and etc) or oiling components (pan, baffle, pickup & etc) beyond the pump.
| FA20 Series | Standard |
|---|---|
| Block Case Type | FADIT |
| Block Hardware | OEM |
| Copper O-Ring | |
| Bore Size | 86.0mm |
| OEM Nitrided Crankshaft | ✓ |
| Connecting Rods | 4340 H-STD |
| Rod Bolts | ARP2000 |
| Pistons | Manley |
| Piston Pins | 0.150in |
| Main Bearings | ACL |
| Rod Bearings | ACL |
| Head Stud Threads | 11mm |
| Balance Precision | 1g |
| Compression Ratio | 10:1 |
| FA20 Stage 0 Cylinder Heads |
|---|
| New Head Castings |
| OEM Valves |
| OEM Valve Springs & Retainers |
| OEM Pivots & Rocker Arms |
| OEM Camshafts |
| Camshaft Carriers |
| OEM Valve Shims |
| ARP2000 11mm Head Studs |
| OEM Head Gaskets |
| Valve Covers |
| Valve Cover Gaskets & Hardware |
| NGK Iridium Spark Plugs |
| Assemby |
[ Long Blocks are built to order please accommodate for build and shipping times ]
[ Long Blocks will be shipped through freight. Please select in-store pick up so you are not charged for more shipping. Will only ship to the contential US 48-States. ]
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 | RalliSpec FA20 Long Block - Stage 0 |
|---|---|
| Brand | RalliSpec |



