Ford 351 Cleveland Engine for Sale | OEM 2V, 4V, and Boss 351 Variants

Description

Engine Background

The Ford 351 Cleveland is one of the most misunderstood and most sought-after Ford performance engines ever built. Produced from 1970 to 1974 at Ford’s Cleveland, Ohio engine plant, it shares only its 351 cubic inch displacement and bore-and-stroke dimensions with the 351 Windsor; everything else is different. The Cleveland uses canted valves similar to Ford’s 429-460 big-block family, allowing larger valve diameters and dramatically superior port flow compared to any Windsor head. The 4V version with closed-chamber heads and large ports was Ford’s answer to the big-block muscle car engines of its era.

The Boss 351 of 1971 was the pinnacle of the Cleveland family, the only one-year-only factory high-performance Cleveland built with 11.7:1 compression, solid lifters, 4-bolt main caps, forged pistons, and a 750 cfm spread-bore Holley carburetor. Rated at 330 hp but widely considered underrated, the Boss 351 ran the quarter mile in the low 14-second range, performance equivalent to the 429 Cobra Jet. Only 1,806 Boss 351 Mustangs were produced, making it one of the rarest factory Mustangs.

The 351 Cleveland continued in Australian Ford Falcon production through 1982, long after US production ended in 1974. Australian 351C units are a significant source of usable Cleveland cores today and are generally well-regarded for their condition due to the Australian climate and maintenance culture. Call (240) 306-7051 to confirm 2V, 4V, or Boss 351 availability.

When Replacement Becomes Necessary

• Loss of compression on one or more cylinders, ring wear or scored cylinder walls on high-mileage units
• Knock under load, rod or main bearing wear
• Blue smoke on startup, valve stem seal deterioration on aged Cleveland heads
• Overheating, the 351C runs warm and aged cooling passages can restrict flow
• Oil leaks at the timing cover, a documented Cleveland seep point

Known Issues We Document Before Shipping

• 2V versus 4V intake incompatibility: the 351C 2V head uses a different intake manifold bolt pattern from the 351C 4V head. They are not interchangeable. A 4V intake will not bolt onto 2V heads and vice versa. We document and confirm head type before every order.
• 4-bolt main availability: standard 351C blocks have 2-bolt main caps. Only the Boss 351, 351 Cobra Jet (Q-code), and 351 HO (R-code 1972) have 4-bolt caps. If 4-bolt mains are required, specify when calling.
• Cleveland versus Windsor confusion: despite identical displacement, these engines share no heads, no intake manifolds, and in some applications use different bell housing patterns. A Windsor intake will not fit a Cleveland block. We verify which engine the buyer needs before every order.
• Australian versus US units: Australian 351C engines are generally available in later (post-1970) configurations using 2V open-chamber heads tuned for lower-octane fuel. They are reliable cores but not performance equivalents of the original US Boss 351 or Cobra Jet variants.
• Cooling system tendency to run warm: the 351C design has restricted cooling passages compared to the Windsor. Plan a quality aluminum radiator, high-flow water pump, and quality thermostat at installation. The engine is known for running warm if cooling components are tired.

351 Cleveland Variants by Year and Application

Critical buyer information across the 1970 to 1974 US production run:

What Ships and What Does Not

Direct-Fit Vehicle Applications

Search Terms Buyers Use

Not sure if this fits? Call us at (240) 306-7051. We verify head type, main cap configuration, and Cleveland-versus-Windsor distinction before every order ships.

Used OEM Versus Specialist Rebuild

For a Mustang Mach 1, Torino, Cougar, or other Cleveland-equipped Ford restoration on a reasonable budget, a documented used 351C with head type verified is the cost-effective path. For a Boss 351 restoration or a performance build targeting 450-plus hp from a Cleveland platform, a specialist rebuild with refreshed heads, a hydraulic roller cam conversion, and supporting hardware is the better investment. Built 351C engines with aluminum heads and a roller cam typically run $7,500 to $14,000-plus from established Ford Cleveland specialist shops.

Inspection Workflow

• Compression test logged across all 8 cylinders with uniformity reported
• Head type confirmed: 2V open chamber or 4V closed chamber
• Main cap configuration documented: 2-bolt standard or 4-bolt (Boss 351, Cobra Jet, HO)
• Year and donor application identified
• Cleveland versus Windsor distinction verified through casting numbers and intake bolt pattern
• Cooling passage condition assessed where accessible
• External oil leak survey at timing cover, valve covers, oil pan

Pre-Purchase Buyer Notes

• Verify Cleveland versus Windsor before paying: the 351C and 351W share only displacement. Heads, intakes, and supporting hardware are not interchangeable. We confirm the Cleveland family on every order using casting numbers and intake bolt pattern.
• Match head type to your intake: 2V intake bolts to 2V heads only. 4V intake bolts to 4V heads only. Cross-type swaps are not possible without head replacement.
• For Boss 351 restoration, verify both 4-bolt mains and canted-valve heads: a genuine Boss 351 requires both. The casting numbers and date codes also matter for show-quality restorations. We document this thoroughly.
• Plan a cooling system upgrade: the 351C runs warm even when new. An aluminum radiator, high-flow water pump, and quality thermostat at installation are good preventive measures, not luxuries.
• Australian 351C versus US 351C: Australian-sourced Clevelands are generally reliable cores but use 2V open-chamber heads tuned for lower-octane fuel. They are not direct performance equivalents of Boss 351 or Cobra Jet US units. For show restoration, US-sourced units are preferred.

Why Buy From Part Nests

• Head type confirmed: 2V open chamber or 4V closed chamber documented before payment
• Main cap configuration disclosed: 2-bolt or 4-bolt verified up front
• Year and donor application identified
• Cleveland versus Windsor distinction verified through casting numbers
• All 8 cylinders compression-tested with uniformity reported
• Cooling system condition assessed
• No core return required
• Free freight delivery to every state
• 15 day replacement warranty against internal defects
• Call (240) 306-7051 to speak with someone who knows 351C 2V versus 4V head differences, Boss 351 versus Cobra Jet identification, and Cleveland-versus-Windsor verification