351 SBF DOME

JE Pistons 338251 are a set of eight forged pistons designed for Ford Small Block 302 and 351W engines. These pistons feature a 4.145" bore, a dome-shaped head, and a compression height of 1.230 inches. They are manufactured from 2618 forged aluminum and are compatible with most 20° Wedge cylinder heads. The design accommodates larger valves and long duration, tight lobe separation cams. They can also accept moderate nitrous. Precision CNC machined ring grooves are sized for 1/16", 1/16", 3/16" rings. A pin upgrade is recommended for applications exceeding 700hp. Engineered, forged, and machined 100% in the USA.

**Compression Ratio (with varying CC cylinder heads):**
* 56cc: 12.6:1/ 16.3:1/ 16.0:1
* 60cc: 11.9:1/ 15.4:1/ 15.0:1
* 64cc: 11.2:1/ 14.5:1/ 14.2:1

**Additional Specifications:**
* **Crankshaft Stroke Compatibility:** 3.100, 4.000, 4.100
* **Cylinder Head Compatibility:** SMALL BLOCK FORD 20 DEG
* **Forging Type:** Round
* **Piston Head Type:** Dome
* **Piston Material:** 2618 Forged Aluminum
* **Piston Quantity:** 8 (set)
* **Ring Set Included:** No
* **Rod Length Compatibility:** 5.400, 6.200, 6.250
* **Ring Thickness:**
* Top Compression Ring: 0.0640 in.
* Second Compression Ring: 0.0640 in.
* Oil Ring: 0.188 in.
* **Wrist Pin Material:** 5115 Low Carbon Steel, Case Hardened
* **Wrist Pin Outer Diameter:** 0.927 in.
* **Wrist Pin Length:** 2.750 in.
* **Wrist Pin Wall Thickness:** 0.150 in.