Topic: whats the diffrence between a 351w and 351c?

[66GTKFB]

That's the best answer I've heard in a long time.
Jim

[Soaring]

The best one is the one thats in MY car! I'm a Cleveland guy..

Good answer, but you had better hold on to it.  They are becoming as rare as hen's teeth.

[66GTKFB]

As far as Ford cars were concerned, 351 Cleveland engines were the mid size engine thru 1978. Ford also made a 400CID Cleveland but it was not popular. In 1979, 351C was the "big" engine. After that, it was only available in Crown Vic police cars. The 351 Windsor was mixed in there somewhere and is still available as a "crate" engine or as base block for up to 427CID. I would assume that trucks used the 351C block as well. Scarce maybe an overstatement for a 351C, but if I had one in a car, I might be inclined to find another. I have a spare 289 that is date coded for two of my Mustangs.
Jim

[Jeff73Mach1]

Bad info

from 69 to 73 ford built Clevelands

from 74 up they were 351 0r 400 M (or Modifieds)

The Modifieds are poor performance choices as they use a big block bell housing, the small port 351 open chamber heads and a tall deck height that was destroked to make the 351 M  They can be improved upon but are expensive and hard to get to perform well.

The true Cleveland is in no way a "boat anchor" and outclassed the Boss 302 and the 289 Hi po in both in low end torque and still revs up just as well as either.  But the Clevelands were made with 3 different sets of heads 5 different cams that I am aware of and atr least 4 different compression ratios- they are not all created equal.

A Boss 351 or a 72 351 HO is a good bluprint for a reliable streetable powerhouse.

All clevelands have an oiling system that is less than perfect for extended high speed use, but fine for the street.  Building a performance version does require educating yourself, but is neither hard, nor are the parts difficult to find.  They are more expensive though.

In a car not equipped with a cleveland, I would build a windsor for cost and for the improved oiling system and the slight weight savings (it is less than 50 pounds)

The aluminum heads on the market for the clevland are mostly crap or require a knowledgable builder to reach their potential.

A set of closed chamber 4 barrel heads for the cleveland will outflow all but the best windsor aftermarket heads, but the huge ports make them lazy at low RPM necessitating a manual transmission, 3.70 gears or lower (numerically higher) and a more aggressive driving style.

In a stroker, the increased displacement offsets this and could make a nice engine from 2500 rpm up but they are not going to flow below that without major work such as port plates or port stuffers

the 4 barrel Open chamber heads are also a viable choice, but lower compression and lack the quench design of the closed chamber heads.  they detonate at lower compression ratios and are more sensitive to timing.

the 2 barrel heads are nice for low end and up to about 5500 and perhaps 375 horsepower, but beyond that they will be an impediment to further performance.

My engine is not a boat anchor!

[Soaring]

The 1974 and up engines from the factory were crap.  I don't care if it was Ford or Chevy. 

[jethat]

Bad info

from 69 to 73 ford built Clevelands

from 74 up they were 351 0r 400 M (or Modifieds)

The Modifieds are poor performance choices as they use a big block bell housing, the small port 351 open chamber heads and a tall deck height that was destroked to make the 351 M  They can be improved upon but are expensive and hard to get to perform well.

The true Cleveland is in no way a "boat anchor" and outclassed the Boss 302 and the 289 Hi po in both in low end torque and still revs up just as well as either.  But the Clevelands were made with 3 different sets of heads 5 different cams that I am aware of and atr least 4 different compression ratios- they are not all created equal.

A Boss 351 or a 72 351 HO is a good bluprint for a reliable streetable powerhouse.

All clevelands have an oiling system that is less than perfect for extended high speed use, but fine for the street.  Building a performance version does require educating yourself, but is neither hard, nor are the parts difficult to find.  They are more expensive though.

In a car not equipped with a cleveland, I would build a windsor for cost and for the improved oiling system and the slight weight savings (it is less than 50 pounds)

The aluminum heads on the market for the clevland are mostly crap or require a knowledgable builder to reach their potential.

A set of closed chamber 4 barrel heads for the cleveland will outflow all but the best windsor aftermarket heads, but the huge ports make them lazy at low RPM necessitating a manual transmission, 3.70 gears or lower (numerically higher) and a more aggressive driving style.

In a stroker, the increased displacement offsets this and could make a nice engine from 2500 rpm up but they are not going to flow below that without major work such as port plates or port stuffers

the 4 barrel Open chamber heads are also a viable choice, but lower compression and lack the quench design of the closed chamber heads.  they detonate at lower compression ratios and are more sensitive to timing.

the 2 barrel heads are nice for low end and up to about 5500 and perhaps 375 horsepower, but beyond that they will be an impediment to further performance.

My engine is not a boat anchor!

The 335 engine is very misunderstood.
The Cleveland's were discontinued in the US in 74 actually and all the molds were shipped to Australia where they were produced until about 83.
The 351 and 400m engine truly lack any sort of aftermarket support but guys who put the effort into them can get reasonable horsepower out them
The fastest mustang of the muscle car era as tested in stock form was actually the 71 Boss 351 wasnt until the late 90's cobra SVT that a faster stock mustang was made.
Every year since popular hotrodding started the engine masters challenge a cleveland engine or a Cleveland headed Windsor has won it. EVERYYEAR for the last 4-5 years this is right now not 30 years ago.. this is going against dodge chevy and all.
Wasnt untill the last 20 years or so with the cheap aluminum heads chevys and ford Windsors could even compete against the cleveland in any way..