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Is the 351M and 400M the same?
the 351M and 400 are two different engines, they are mostly interchangeable, the 351M has a 3.5″ stroke, the 400 has a 4.0″ stroke.
How can I tell if I have a 351M or 400?
Take a dowel of some sort and put it in one of the spark plug holes and mark it at its maximum length in. 4″ meas you got yourself a 400, 3.5″ means you got a 351M. Otherwise you can check the Vin number on the vehicle and hope its the original engine that matches the code.
Do You Have a 400 or a 351M?
Images related to the topicDo You Have a 400 or a 351M?
What is the Ford 400M motor?
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.
What is a Ford 400 modified engine?
The Ford 400 was introduced along with the 351 Modified in 1971. The 400 was used in many applications over the years. The 400 replaced the Ford 390, and it was designed for good acceleration for medium to heavy vehicles. The 400 is basically a stroked 351– it had the longest stroke in pushrod engines at the time.
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.
How do I identify a Ford 400m?
Identify the ID tag by locating it under coil bolt attachment nuts in some six- cle bolt attaching bolts for six-cylinder and some eight-cylinder engines. You can put a tag around the engine of your car and know for sure its year, model, and year end. You see them under the bolts at the left or right of the engine.
What is a 351 modified 400 engine?
351 Modified
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. It also had a higher deck height to accommodate the longer stroke.
See some more details on the topic What’s the difference between 351M and 400m? here:
What the difference between the 351M and the 400 – Ford …
The 351M/400 block is an “overgrown” Cleveland with bigger mains and an extra inch of deck height. BTW the 351W is an “overgrown” 302. The 400 …
351M VS 400M difference | Ford Muscle Cars Tech Forum
The only differences are the crank and the pistons in the 351M. Everything else and I do mean everything is the exact same.
The Confusion of the 351M/400 Ford Engines – Modern …
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 …
how can I tell a 351M400 from a 400 Ford? – The Jalopy Journal
the 351M and 400 are two different engines, they are mostly interchangeable, the 351M has a 3.5″ stroke, the 400 has a 4.0″ stroke. it’s pretty …
Is the 400m a good motor?
A well maintained 400 can last as good as any Ford engine. When Ford first started installing them in cars and trucks they unfortunately didn’t live very long in my area. The locals were used to regularly winding up their Windsor small blocks and their big blocks with no problems.
How much horsepower does a 351 modified have?
How Much Horsepower Does A 351 Modified Have? Power comes from horses. A two-barrel engine of the 351 featured 240 horsepower. A four-barrel engine with 285 horsepower was available as well, making it four-wheel drive.
How to know the difference 351 c an 351 m/ 400 knowledge
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How much horsepower does a Ford 400m have?
| Engine | Horsepower | Torque |
|---|---|---|
| 3.3-liter V-6 | 290 hp | 265 lb-ft |
| 2.7-liter EcoBoost V-6 | 325 hp | 400 lb-ft |
| 5.0-liter V8 | 400 hp | 410 lb-ft |
| 3.0-liter Power Stroke V-6, Turbo-Diesel | 250 hp | 440 lb-ft |
What does the M mean in 351M?
351M/400 identification confusion
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.
How many liters is a 400 small block?
400. The largest version of the Generation I small-block was the 400 (6.6 liter). It was the only engine available with both the 4.125-inch bore and the 3.75-inch stroke crankshaft. It debuted in 1970 and was produced for 10 years.
Is a Ford 400m a FE engine?
…
How Much Hp Does A Ford 400 Big Block Have?
| Model Year | Engine | Horsepower @ RPM (SAE net, except ’71) |
|---|---|---|
| 1978 | 400 (car/truck) | 160 @ 3800 / 158 @ 3800 |
Is a 400 Ford a big block?
The 400 was intended as a replacement for Ford’s aging big-block designs. The block’s architecture borrowed heavily from the Cleveland, including the bore spacing, but 1.09 inches of additional deck height were added to allow a 4.00-inch stroke and the potential for plenty of torque.
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.
How many liters is a 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.
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.
JUNKYARD TORQUE TEST-5.0L 302 VS 400M
Images related to the topicJUNKYARD TORQUE TEST-5.0L 302 VS 400M
What years did Ford use 400?
What Years Did Ford Use 400? Ford built light trucks and vans powered by the 351/380M V8 engine between 1977 and 1982. M-block 400 engines powered over 200,000 miles in Ford 4×4 trucks during that time period. Ford’s new, full-size Bronco was offered with 351M and 400 models during the 1978 and 1979 model years.
What year did the Ford 400 come out?
The 400 was introduced in 1971 as a longer-stroke variant of the 351 Cleveland, and it would be the last pushrod V8 engine ever designed by the Ford Motor Company.
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