Comprehensive Overview of the 351 Cleveland Engine Specifications

The Ford 351 Cleveland engine is celebrated for its innovative design and robust performance, making it a notable member of the Cleveland family of engines produced between 1971 and 1973. Below, we delve into the full specifications of the 351 Cleveland, highlighting its engineering features, performance metrics, and capabilities.

Engine Type and General Specifications

• Type: O.H.V. V-8
• Displacement: 5.8L (351 CID)
• Bore and Stroke:
  • Bore: 4.00 inches
  • Stroke: 3.50 inches
• Firing Order: 1-3-7-2-6-5-4-8
• Oil Pressure (Hot @ 2000 RPM): 345-517 kPa (50-75 PSI)

Performance Metrics

The performance attributes of the 351 Cleveland engine demonstrate its capabilities effectively:

• Horsepower (Bhp @ RPM):
  • 300 @ 5400 (4V – 1970)
  • 285 @ 5400 (4V – 1971)
  • 280 @ 5800 (CJ – 1971)
  • 330 @ 5400 (Boss – 1971)
  • 266 @ 5400 (4V/CJ – 1972)
  • 275 @ 6000 (72 HO)
  • 260 @ 4400 (1971)
  • 172 @ 4000 (1972)
• Torque (Ib-ft @ RPM):
  • 380 @ 3400 (4V – 1970)
  • 370 @ 3400 (4V – 1971)
  • 345 @ 3800 (CJ – 1971)
  • 370 @ 4000 (Boss – 1971)
  • 301 @ 3600 (4V/CJ – 1972)
  • 286 @ 3800 (72 HO)
  • 400 @ 2200 (1971)
  • 298 @ 2200 (1972)
• Compression Ratio:
  • Ranges from 8.4:1 to 11.7:1 depending on the variant.

Cylinder and Head Specifications

• Bore Spacing: 4.38 inches
• Cylinder Head Volume:
  • Ranging between 61.3 cc and 64.3 cc for 4V versions.
• Valve Sizes:
  • Intake Valve Diameter: 2.032 – 2.050 inches
  • Exhaust Valve Diameter: 1.649 – 1.659 inches

Valve Train and Rocker Arm Specifications

• Rocker Arm Lift Ratio: 1.73:1
• Valve Stem to Guide Clearance:
  • Intake: 0.010 – 0.027 inches
  • Exhaust: 0.015 – 0.032 inches
• Valve Springs Compression Pressure:
  • Intake: 76-84 lbs at specified height
  • Exhaust: 76-84 lbs at specified height

Conclusion

The Ford 351 Cleveland engine embodies both a rich history of automotive engineering and a reputation for high performance. While it was produced for only a brief window, its specifications demonstrate a powerful engine capable of meeting the demands of the street, the track, and off-road adventures. As enthusiasts continue to value this engine, its parts remain reasonably priced, ensuring that building a high-performance vehicle around the 351 Cleveland remains accessible.

Whether you’re a collector, a racer, or simply a Ford aficionado, understanding the full specifications of the 351 Cleveland can enrich your appreciation for this powerhouse from Ford.