What is the difference between Ford 2V and 4V heads?
What is the biggest difference between the 2V and 4V heads? A: Starting with the basics, 2V heads are designed for use with a factory 2-barrel carburetor option (2V = 2 venturi), while 4V heads came on one of the five Ford 351C engine configurations that came with a 4-barrel carburetor (4V = 4 venturi).
How do you tell if you have 2V or 4V heads?
You can alwayss tell the 4V heads by looking at the exhaust port shape. 2V = true oval shape, 4V = almost square shape with an intrusion for the exhaust manifold bolt boss in one top corner.
How much horsepower can you get out of a 351 Cleveland?
Horsepower. The 351 was available as a two-barrel which was a basic engine and a four-barrel, or performance, engine. The two-barrel was rated at 240 horsepower while the four-barrel was rated at 285 horsepower.
Will 351 Cleveland heads fit on a 351 modified?
Hi dlone, 4V Cleveland heads will fit on a 351M (Midland) engine, but the ports are very much larger than the 2V ports in the 351M heads.
How can I tell if my Cleveland heads are 4V?
A 2V cleveland have a #2 in upper both corners of the cylinder head. A 4V have the #4 in the upper both corners of the cylinder head. If your heads is clevelandstyle but dont have the #2 or 4 its heads for the 400 or 351M.
What’s better 351 Cleveland and Windsor?
The 351 Cleveland is a member of the 335 series family of Ford small-block engines. Its large ports and oversize canted valves give it more horsepower and allow it to run at a higher rpm than the Windsor. The valve covers have a twisting curve and are attached by eight bolts.
What is the difference between 2V and 4V engines?
While the Apache RTR 160 2V looks larger, the RTR 160 4V has a more compact and sharper design. On the other hand, the RTR 160 2V’s 159.7cc air-cooled and fuel-injected motor uses a simpler 2-valve cylinder head. It makes more power in its BS6 avatar thanks to fuel injection.
How do I identify a 351 Cleveland head?
A 4V have the #4 in the upper both corners of the cylinder head. If your heads is clevelandstyle but dont have the #2 or 4 its heads for the 400 or 351M. They looks like 351C heads but is different with larger combustion chambers wich equals lower compression.
Can you put Windsor heads on a Cleveland block?
Will Windsor heads fit on a Cleveland block? they will but you’ll loose performance over cleveland heads.
How can I get more horsepower out of my 351 Cleveland?
It is all in what you want from your Cleveland. If you want highend horsepower, increase carburetor size conservatively in 50- to 100-cfm increments. If you want stump-pulling torque, go smaller in the 600- to 650-cfm range. Single-plane manifolds make sense for high-RPM use or when you increase displacement.
What heads will fit 351C?
The 351C 2V heads and M-block heads use the same size valves (2.04/1.66). The M-block head can be machined to use 351C 4V valves (2.19/1.71). The 351C and 400 pistons have the same compression height (dimension from wrist pin to top of piston), but the M-block wrist pin is slightly larger than the 351C wrist pin.
Are 351C and 351M heads the same?
Because the 351C and 351M/400M are from the same 335 engine family, many things are interchangeable. Heads are interchangeable with Clevelands so any stock Ford casting or aftermarket aluminum 351C head will work on a 351M/400M.
What kind of head does a 351 Cleveland have?
The 351C open-chamber head (2V and 4V) is a poor choice regardless of what you intend to do with your Cleveland. People associate this chamber with the smallport, 2-barrel head; however, it is also the 4-barrel head chamber for 1973β1974.
What are the different types of Cleveland cylinder heads?
351 Cleveland Cylinder Heads Guide: Factory Iron Heads 1 351C-4V closed wedge chamber, boss/high-output head (adjustable rockers with screw-in studs) 2 351c-2v open chamber (bolt-fulcrum) 3 351C-4V open chamber (bolt-fulcrum) 4 351C Australian head (2v ports with closed wedge chamber) 5 302C Australian head (smaller, closed wedge chamber)
What’s the difference between 351C and 302C iron heads?
Port sizing on this 302C Australian head is comparable to the North American 351C-2V head. What you get with the Australian 302C head is smaller, 57- to 59-cc chambers and higher compression. Casting numbers begin with βARβ along with a North American number on the valley side of intake ports.
What kind of intake port does a 351C-4V have?
The 351C-4V head has huge 2.50Γ1.75-inch drive-through intake ports designed for high RPM use. Though the 4-barrel head is a factory iron piece installed on production vehicles, it was engineered primarily for racing. The same casting was installed on Boss 302 engines, except for water-passage differences.