Ford Boss 351 engine

Infobox Automobile engine


name=Boss 351
aka =
manufacturer=Ford Motor Company
type = 90° V8
production=1971
predecessor=Boss 302
successor =
bore = Auto in|4
stroke = Auto in|3.5
displacement = Auto CID|351
length =
diameter =
width =
height =
weight =
block = Nodular iron
head =
valvetrain = Mechanical OHV
supercharger =
turbocharger =
fuelsystem =
fueltype =
oilsystem =
coolingsystem =
power = Convert|330|hp|kW|0|abbr=on @ 5400 RPM
specpower =
torque = Auto ftlbf|370 @ 4000 RPM
compression = 11.1:1
fuelcon =
specfuelcon =
oilcon =
similar=Chevrolet Small-Block V8
Chrysler Hemi V8
related=Ford 335 "Cleveland" V8

The Ford Boss 351 is a modified 351 in³ (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 ft³/min
* Fuel: Premium leaded
* Valve lash cold: .022 in (0.6 mm) intake and exhaust, .025 hot

ee also

* Ford 335 engine
* Ford Boss 302 engine
* List of Ford engines

External links

* [http://web.archive.org/web/20060302021031/http://bossc351.stangnet.com/WMABAB.html What Makes a Boss 351] - link via web archive.