What Years Did Ford Make The 351M? The 20 Top Answers

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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.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.351 Modified

It also had a higher deck height to accommodate the longer stroke. As the 351 Cleveland faded away, Ford engineers reverted to the original 351C’s 3.5-inch stroke, yet retained the 400’s deck height to create the 351M.

Located on the passenger side of the block near the bell housing end of the block is the casting number.

351M & 400 Identification
  1. 1st number is the year.
  2. 2nd letter is the month.
  3. 3rd & 4th number is the day of the month.
What Years Did Ford Make The 351M?
What Years Did Ford Make The 351M?

What did a 351M come in?

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 do I identify a 351M engine?

Located on the passenger side of the block near the bell housing end of the block is the casting number.

351M & 400 Identification
  1. 1st number is the year.
  2. 2nd letter is the month.
  3. 3rd & 4th number is the day of the month.

Do You Have a 400 or a 351M?

Do You Have a 400 or a 351M?
Do You Have a 400 or a 351M?

Images related to the topicDo You Have a 400 or a 351M?

Do You Have A 400 Or A 351M?
Do You Have A 400 Or A 351M?

Did Ford make a 351 modified?

351 Modified

It also had a higher deck height to accommodate the longer stroke. As the 351 Cleveland faded away, Ford engineers reverted to the original 351C’s 3.5-inch stroke, yet retained the 400’s deck height to create the 351M.

What was the last year for the 351M?

1979 was the last year the 351M/400 engines were produced in large numbers.

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.

How do you tell if I have a 351M or 400?

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 hard to tell which it is just looking at it….but they are the same thing as far as all the parts you mentioned.

How can you tell 351M from 351W?

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.


See some more details on the topic What years did Ford make the 351M? here:


The Confusion of the 351M/400 Ford Engines – Modern …

351M production began for the 1975 model year and blocks were cast in the Michigan Casting Center or the Cleveland Foundry. The 351M was the last pushrod V8 …

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M-Block 351M/400 History – The Ford Torino Page

The 351M was introduced in passenger cars in MY 1975. The 351M uses the same block and heads as the 400, with a shorter stroke crankshaft (3.50″), the same …

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History of the Ford 351M – Project Bronco

The 400M was first introduced in the 1971 Full-size model cars and station wagons. It was developed as an economical, reduced emissions …

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What Ford Engine Was The 351m? – McNally Institute

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 …

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What years did Ford make the 351 Cleveland engine?

To muscle car fans like Cole, a Cleveland is Ford’s 351-cubic inch V-8 engine built from late 1969 to 1972. It was the most iconic motor produced at the company’s Cleveland Engine Plant No.

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.

What engine family is the 351M?

This engine family began production in late 1969 with a 351 cu in (5.8 L) engine, commonly called the 351C.

Ford 335 engine.
Ford 335 V8
Block material Cast iron Deck height: 9.206″ (302C, 351C) 10.297″ (351M, 400)
Head material Cast iron
Valvetrain Overhead valve Cast iron cam, flat tappet

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.

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.


BREAKING DOWN a Ford 351m to the block – #midnightmaroon

BREAKING DOWN a Ford 351m to the block – #midnightmaroon
BREAKING DOWN a Ford 351m to the block – #midnightmaroon

Images related to the topicBREAKING DOWN a Ford 351m to the block – #midnightmaroon

Breaking Down A Ford 351M To The Block - #Midnightmaroon
Breaking Down A Ford 351M To The Block – #Midnightmaroon

How much HP does a 351M have?

Factory Power Ratings
Model Year Engine Horsepower @ RPM (SAE net, except ’71)
1978 400 (car/truck) 160 @ 3800 / 158 @ 3800
1979 351M (car/truck) 151 @ 3400 / 156 @ 4000
1979 400 (car/truck) 159 @ 3800 / 159 @ 3800
1980 351M (truck only) 138 @ 3400

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.

Are 351M and 400 heads the same?

Note that heads are interchangeable between all Cleveland and 400, 351M engines.

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.

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.

How much does a 351M weigh?

How Much Does A Ford 351 Engine Weigh? A regular 351 weighs 65 pounds when with the same equipment.

Did Ford make a 400 small block?

The 351 and 400 series ers (351M/400) was a mainstay of Ford light trucks from 1977 to 1982. Ford 4×4 trucks featured the most powerful engine at the time, the M-block 400. Ford was the only brand of car that offered 351M and 400 engines for its first and only model years in the 1979 and 1981 model years of its Bronco.

Does Ford make a 400 engine?

Breaking in the Ford 400M Engine

Equipped with the stock two-barrel intake and Holley carb, the 400M produced peak numbers of 265 hp at 4,100 rpm and 412 lb-ft at 2,900 rpm. Torque production from the 400M exceeded 400 lb-ft from below 2,000 rpm (we didn’t load it lower than 2,000 rpm) to 3,200 rpm.

How can I tell what size my Ford Motor is?

From upper left to bottom right:
  1. Cubic Inch Displacement (CID): The first three numbers, found in the upper left corner, tell you the size of the engine.
  2. Manufacturing Plant: The single letter to the right of the CID is where the engine was built. …
  3. Year: The next two numbers are for the year the engine was built.

Are 351M and 351C 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.


302 vs 351M blocks

302 vs 351M blocks
302 vs 351M blocks

Images related to the topic302 vs 351M blocks

302 Vs 351M Blocks
302 Vs 351M Blocks

When did Ford stop making the 351 Windsor?

The 351 Windsor (351w for short) is the largest of the Ford Small Block engine family. Ford Motor Company built them between 1969 and 1996.

What cars had a 351 Cleveland?

In addition to being sold in a Mustang wrapper, the 351C could also be had in the Ford Torino, the Mercury Montego, and the Mercury Cougar.

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