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There are several external differences that can help to distinguish between the 351W engine and the 351C and M engines: The 351W has three bolts attaching the valve covers on the exhaust manifold side; the 351C,M has four. The 351W has the timing cover bolted to the block.Some claim the “M” stands for “Modified” – being modified from a 400-V8 with a shortened stroke – though others claim that the “M” refers to the Michigan Casting Center, where the 351M began production.The 351C used the “Small Block” bellhousing bolt pattern. The 351M/400 used the “Big Block” bellhousing bolt pattern.
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What does the M in 351M stand for?
Some claim the “M” stands for “Modified” – being modified from a 400-V8 with a shortened stroke – though others claim that the “M” refers to the Michigan Casting Center, where the 351M began production.
Is a Ford 351M a Big Block?
The 351C used the “Small Block” bellhousing bolt pattern. The 351M/400 used the “Big Block” bellhousing bolt pattern.
Whats the difference between a 351 Windsor and a 351 Cleveland?
Images related to the topicWhats the difference between a 351 Windsor and a 351 Cleveland?
Is a 351 modified a good engine?
The 351M is a good engine that can make some really awesome horsepower. I have a stock 351M in my 77 F150 4×4 and I can sqeal the tires through 3 gears. And that is bone stock!!!!!! If you really want some power put a bigger cam and headers on it and look out because you will really have some power.
What is a 351M Ford engine?
Ford used the M-block (351M/400) V8 engine from 1977 to 1982, and it was a mainstay of their light truck programs. Ford’s M-block 400 engines were among the most powerful on the market in that period. After the 1979 and 1981 model years Ford offered the 351M and 400 engines on new, full-size models.
How much HP does a 351M have?
| Model Year | Engine | Horsepower @ RPM (SAE net, except ’71) |
|---|---|---|
| 1978 | 351M (car/truck) | 152 @ 3400 / 156 @ 4000 |
| 1978 | 400 (car/truck) | 160 @ 3800 / 158 @ 3800 |
| 1979 | 351M (car/truck) | 151 @ 3400 / 156 @ 4000 |
| 1979 | 400 (car/truck) | 159 @ 3800 / 159 @ 3800 |
How do I identify a 351M engine?
…
351M & 400 Identification
- 1st number is the year.
- 2nd letter is the month.
- 3rd & 4th number is the day of the month.
Can you turn a 351M into a 400?
The right pistons and a crank from a 400 are all it takes to turn a 351M into a 400. It’s true that the rods, heads, intakes, etc., are the same for both engines. You don’t have to be afraid to build your M or 400 up, and if you need pistons, Tim is the guy to talk to.
See some more details on the topic What’s the difference between a 351W and a 351M? here:
what’s the difference between a 351W 351C and a 351M?
A 351W intake is about an inch to an inch and a half wider. The 351C (Cleveland) and 351M/400 (most commonly referred to as “Modified”) are very …
difference of 351M and 351W? – Ford Truck Enthusiasts Forums
The 351 m is a larger block(Ford never used “big” or “small” block in describing their engines) like the 400, the 351w is a smaller block like the 302. The 351c …
What’s the Difference Between a Ford 351 Windsor, Cleveland …
What alot of people don’t realize, is the 351m was actually a 400 destroked to a 351, the two engines used the same block and rod length, with …
PROS & CONS 351W VS 351M – Full Size Bronco Forum
THe 351M is a big block, the “M” stands for modified. A poor engine. The 351W is a small block, the “W” stands for Windsor, refers to where …
What transmissions will fit a 351M?
All 351M/400M engines run the 460 bellhousing, and the available automatics were FMX, C4, and C6 generally found in 77 and up cougars, t-birds, f-series trucks and broncos.
Is there a 351 Cobra Jet?
A Q-code 351 cobra-jet was designed by Cobra and manufactured from May 1971 until the model year 1974 under the name 351-CJ and 351-V.
What was the last year for the 351M?
1979 was the last year the 351M/400 engines were produced in large numbers.
FORD 351W VS 351C
Images related to the topicFORD 351W VS 351C
How much horsepower does a 351 Windsor have?
While the latest generation of 351 Windsors typically generated around 180-220 horsepower from the factory, adding a new set of heads, a larger cam, and some other aftermarket parts can get a Windsor with the stock stroke to around 350-400 horsepower easily.
What years were the 351M made?
From 1977 to 1982, the M-block (351M/400) V8 engine was a mainstay of Ford light truck powerplants. During that period, the M-block 400 was the largest engine available in any Ford 4×4 truck. In the 1978 and 1979 model years, the 351M and 400 were the only engines offered in Ford’s new, full-size Bronco.
What is the difference between 351 Cleveland and 351 modified?
The 351M is part of the same Ford 335 V8 engine series as the 351 Cleveland. It’s based on the 400 Modified engine (see note on nomenclature in the opening paragraph), which was essentially a 351C with a longer stroke. Unlike the 351C however, the 400 blocks had the bellhousing bolt pattern of 385-series big blocks.
How many liters is a Ford 351M?
The 351 cubic inch engines (both 351 Windsor and 351M) were referred to as 5.8 liters, and the 400 cubic inch engine was referred to as 6.6 liters.
Are 351M and 400 heads the same?
Note that heads are interchangeable between all Cleveland and 400, 351M engines.
How much does a 351M weight?
How Much Does A 351 Modified Weigh? A registered user. As for a 351W model, the recommended weight would be below the starter and the fan, but above the air cleaner too – with 515 pounds. With an intake that is head-selecting, you can expect to see quite a drop in efficiency.
What is the horsepower of a Ford 460 engine?
Ford Performance has taken its Boss Block to the max with the biggest small block Windsor crate engine ever – the Z460. With 575 horsepower and 575 Lb. Ft. of torque, Z460 packs a pump gas fueled punch that works well on the street and on the track.
What is a Ford 400 engine?
The Ford 400 engine was based on the 351 Cleveland. It had a half-inch (12.7 mm) longer stroke than the 351 Cleveland, making it the longest-stroke Ford pushrod V8 engine. The 400 had “square” proportions, with a 4.0 in (102 mm) bore and stroke.
Do You Have a 400 or a 351M?
Images related to the topicDo You Have a 400 or a 351M?
How can I tell what Ford engine I have?
There is a tag etched into the engine’s year, make, and model. It can be found underneath the bolts on the left or right side of the engine.
How do I identify 351M heads?
All 351C cylinder heads have a number “2” or “4” cast into the upper corners of the head. Those casting marks identify the head as either a 351C 2V or 351C 4V head. Early production (MY1971-MY1974) M-block cylinder heads have either no mark in that spot, or a “2” like the 351C 2V heads.
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