Ford Boss 351 engine
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| Manufacturer | Ford Motor Company |
|---|---|
| Type | 90° V8 |
| Production | 1971 |
| Predecessor | Boss 302 |
| Bore | 4 in (101.6 mm) |
| Stroke | 3.5 in (88.9 mm) |
| Displacement | 351 cu in (5.8 L) |
| Block alloy | Nodular iron |
| Valvetrain | Mechanical OHV |
| Power output | 330 hp (246 kW) @ 5400 RPM |
| Torque output | 370 lb·ft (502 N·m) @ 4000 RPM |
| Compression ratio | 11.1:1 |
The Ford Boss 351 is a modified 351 cu in (5.8 L) 335 "Cleveland" V8 fitted with 4V (4V meaning 4 venturi (barrel) carburetor, not 4 valves) style closed-chambered 351C heads. Available only in 1971 production, it uses the basic four-bolt Cleveland block and crankshaft but both are constructed from high-strength nodular iron. The cylinder head is modified for better airflow and solid lifters. Aluminum valve covers added to the look. The forged connecting rods were shot-peened and magnafluxed for strength, and forged domed pistons gave an 11.3:1 nominal (11.1:1 advertised) compression ratio.
- Bore/stroke ratio: 1.14:1
- Bore spacing: 4.38 in (111.3 mm)
- Connecting rod length: 5.78 in (146.8 mm)
- Compression ratio: 11.3:1 (64.6-67.6 cc quench type chambers)
- Piston compression height: 1.631 in (41.4 mm)
- Carburetor: Autolite 4V, spread bore, 750 cu ft/min
- Fuel: Premium leaded
- Valve lash cold: .022 in (0.6 mm) intake and exhaust, .025 hot
See also
External links
- What Makes a Boss 351 - link via web archive.
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