It's because they are simply bigger, more powerful engines. For most street applications, the 4v Cleveland heads were just too much, with the best budget-minded results coming from running a mild cam and an aftermarket intake on the 2v heads that allowed the use of a Holley or Carter 4v carb. After the initial success of the Boss 302, Ford engine designers developed a completely new, larger displacement engine to take advantage of the free-breathing Boss 302 cylinder head. The Cleveland is an amazing racing engine. I have tried to avoid errors in this information, but I can make no warranties to that effect.
Anyone got some engines laying around an accurate scale?? Or, download the book from My Downloadable Products in your. If anyone is looking at doing one check out these guys for parts, they have high-compression pistons and most of the other performance parts, even a 434ci stroker kit for the 400s. Keep in mind that these considerations are along with the usual factors of compression ratio, cylinder head flow, stall converter, and of course plain 'ol desire for a lopey idle. The 351M, which is now a 406, has completely exceeded all expectations I had for this project. The only exception would be installing a 78 or newer 460 in a 78 Bronco. First, The Basics A 406-inch Windsor, based on the 351ci Ford, is light for its displacement but costs a lot of money to build and involves a stroker crankshaft assembly.
Until now, there weren't many options available when it came to aftermarket head selection for the Clevelands. The 335 Series Engines The were two engine types in the Ford engine design family known as the 335 series, the 351 Cleveland and the M-block. The first Ford engine design to incorporate poly-angle chambers and canted valves was the 385 series big block. Emissions legal if all factory emissions equipment is reinstalled and in proper working order. Consider an average buyers point of view; they have no idea what you did and where you got the parts for the swap. This might seem a little confusing unless you really liked math in school and who did? Any opinions and info welcome! Interchangeable Components in the 335 Series Even though the M-block was relegated to smog oblivion by the factory, and even though the M-block has been mostly ignored by the aftermarket performance industry, the 351 Cleveland is well supported and the M-block has just enough in common that it can share several key performance enhancing components. It was never designed to make a lot of horsepower.
Exhaust headers Several companies that make exhaust headers offer headers for the M-block engine in Ford truck and Bronco applications. Fortunately, the compression height distance from wrist pin centerline to piston top of 351C pistons is compatible with 400 pistons. This argument usually comes from those trying to prove the 400's advantage over the 460. Engine Component Interchangeability Comments cylinder heads 100% interchangeable You can use any cylinder head from any 335 series engine on any 335 series engine block. The stock 2 barrel heads are fine for a mild engine, although the open chambers are prone to detonation. I wouldn't overbore more that. By comparison, in 1971 the 460 was rated at 365 hp 4600 rpm.
There is no doubt about it -- more cubic inches equals more hose power. The only way I could see the 351C making more power, would be if it was geared deeper and turned higher rpms. The 351M piston is unique, with a taller compression height than the 351C and 400 pistons, and it is not interchangeable with any other engine. Here is a link with some basic M info This is a long thread on a truck build, He put together a mild 400 that made 351 hp, 473 ft-lb on the dyno thanks for all the replies to the thread I run a 400M in my parts-chaser, etc. Although the stated maximum lift from Edelbrock for the heads is 0.
Be prepared to pay a little extra for a shop to perform this upgrade -- Engine shops like to use your existing connecting rods and crank shaft when performing a rebuild. Prices include shipping in the Continental United States. All eBooks purchased from cartechbooks. Shop the large inventory of including! Fortunately, the compression height distance from wrist pin centerline to piston top of 351C pistons is compatible with 400 pistons. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Price Motorsports makes spacers for a 400 with 4V heads. I suppose you could call it ironic we call this engine the Cleveland considering Cleveland castings were also produced at the Windsor, Ontario, foundry.
The few that did embrace the 400 did well with it. However, if you can get all the pulleys, brackets, and other little stuff off the engine dipstick tube, oil pan, valve covers, and so on , a short-block is all you need. For these systems to work, the fresh air injection point still required for the catalytic converter must be downstream from the oxygen sensor to prevent false readings. Then we got the damage report: The oil rings were locked solid in the piston grooves, five cam lobes were flat, and several guides were worn to death. They are the perfect complement to a dual-profile or roller cam shaft.
You can use a myriad of performance tricks to achieve higher head-flow. You can purchase an eBook just like you would any other book on our website. Trick Flow Specialties Trick Flow recognized the dilemma facing Ford buffs saddled with rather pathetic factory iron heads in North America. The cutter should only be used to cut smaller-sized valve pockets, but it was perfect for this project. You can get nearly the same increase in compression by milling your stock heads the standard 0.
In some cases, a single piston design can be used in more than one engine. I'm not trying to stop you from building what you want. Actually, it would have been a simple matter to install a more complicated Thermactor air injection system like the ones used on other Ford engines and pipe the fresh air to ports located just in front of the catalytic converter. The 351C, as well as a lower-displacement 302C, was produced in Australia from 1972 to 1982. Choosing an intake manifold is easy.
The low compression piston was used until M-block production ceased in 1982. Cleveland headers will bolt to the engine, but they will be moved closer to the fenders, and the headers may not clear suspension components. The bore of an engine is the diameter in inches of the piston or cylinder bore and the stroke is the distance measured in inches in which the piston travels up and down within the cylinder bore. The 351 cubic inch engines both 351 Windsor and 351M were referred to as 5. I just wanted a nice running v8 and thats what I got. These cams cover the gammet, from flat tappet to roller, and hydraulic to solids ranging from 201 to 298 degrees of duration. What is Adobe Digital Editions? The Cleveland engine addressed the major shortcoming of the Windsor engines that preceded it, namely cylinder head air flow.