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How Much Horsepower Does A 351 Modified Have? Top Answer Update

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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.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.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.

Factory Power Ratings
Model Year Engine Horsepower @ RPM (SAE net, except ’71)
1977 400 (car/truck) 173 @ 3800 / 158 @ 3800
1978 351M (car/truck) 152 @ 3400 / 156 @ 4000
1978 400 (car/truck) 160 @ 3800 / 158 @ 3800
1979 351M (car/truck) 151 @ 3400 / 156 @ 4000
How Much Horsepower Does A 351 Modified Have?
How Much Horsepower Does A 351 Modified Have?

Table of Contents

How much HP 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.

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Is a 351 modified a good motor?

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.


351 Small Block Dyno Shootout: Windsor vs Cleveland – HorsePower S16, E11

351 Small Block Dyno Shootout: Windsor vs Cleveland – HorsePower S16, E11
351 Small Block Dyno Shootout: Windsor vs Cleveland – HorsePower S16, E11

Images related to the topic351 Small Block Dyno Shootout: Windsor vs Cleveland – HorsePower S16, E11

351 Small Block Dyno Shootout: Windsor Vs Cleveland - Horsepower S16, E11
351 Small Block Dyno Shootout: Windsor Vs Cleveland – Horsepower S16, E11

What is a 351 modified?

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.

Is the 351 modified A Big Block?

Other Differences. The 351C used the “Small Block” bellhousing bolt pattern. The 351M/400 used the “Big Block” bellhousing bolt pattern.

What is a 351 Cobra Jet?

The Q-code 351 “Cobra-Jet” (also called 351-CJ, 351-4V) was produced from May 1971 through the 1974 model year. It was a lower-compression design that included open-chamber 4V heads.

How much horsepower can a 351 Cleveland make?

The 351 was available as a two-barrel which was a basic engine and a four-barrel, or performance, engine. The two-barrel was rated at 240 horsepower while the four-barrel was rated at 285 horsepower.

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.


See some more details on the topic How much horsepower does a 351 modified have? here:


What Ford Engine Was The 351m? – McNally Institute

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 …

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How Much HP Does a 351 Cleveland Have? – It Still Runs

The two-barrel was rated at 240 horsepower while the four-barrel was rated at 285 horsepower. All in all, the 351, in general, enjoyed the highest horsepower …

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MY 351m horsepower rating – Ford Truck Enthusiasts Forums

335 Series- 5.8/351M, 6.6/400, 351 Cleveland – MY 351m horsepower rating – I know the 1977 351m was given a horsepower rating of 161h.p.

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351 Modified More Hp??????? | Hot Rod Forum – Hotrodders …

This was covered extensively about 4 months ago, wish I could find the thread. It is rated at 150 hp. You don’t need intake, you need cam and …

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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 was the last year for the 351M?

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

What is the difference between 351W and 351M?

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.

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.

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.


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?

What’s the difference between a 351M and 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.

What is Ford’s biggest V8 engine?

Ford 385 engine
Ford 385 V8
Configuration Naturally aspirated Big-block V8
Displacement 370 cu in (6.1 L) 429 cu in (7.0 L) 460 cu in (7.5 L)
Cylinder bore 4.360 in (110.7 mm)
Piston stroke 3.59 in (91.2 mm) 3.85 in (97.8 mm)
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Is 351 Windsor a good motor?

Ford’s 351W engines are virtually bulletproof. The blocks, even on the 1975+ models, are very stout and will not give any problems until serious power is added. The rods, pistons, and other internal components are rock solid as well. Overall, the 351 Windsor is a tough engine and is built to take a beating.

What is a Boss 351?

The 1971 Boss 351 was a replacement for the already rowdy and famous Boss 302. That car, so-named because of its 302-cubic-inch engine, gave way to the 351 with its larger Cleveland V-8. The 351-cubic-inch engine turned out 330 hp, 40 more than the Boss 302 managed.

How much HP 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.

How much horsepower does a 429 Cobra Jet engine have?

At 375 horsepower and 450 lb-ft of torque, the 385-series 429ci big-block was the most powerful factory engine ever installed in a first generation Mustang. Ford initially used the short-block with hemi heads in ’69 to conceive the limited production Boss 429 Mustang. However, the Boss 429 was not for everyone.

How fast is a 351 Cleveland?

Road tests of the day showed 351C four-barrel Mach 1 Mustangs running 15.2 e.t. ‘s, about a tenth or two quicker than a similar 351W Mach 1 from a year earlier. Like the 429, which got the performance treatment after first appearing as a passenger car engine, the 351 had a hot new version for 1971.

Can you stroke a 351 Cleveland?

The key to making real stroker power with the 351C is to stroke as much displacement as possible into its bores in order to make the most of its large-port heads. This means you need a stroker kit that will allow you to spin it to at least 6,000 rpm for best results.

How much is a 351 Cleveland engine worth?

Buying an entirely bare 351C block and crank (no other parts are needed) tops $600. A full running engine will set you back at least $1200. There would be a price range of $300-500 for the open chamber with just a 4V head alone.

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.


Ford 351M and 400 Cylinder Numbering and Firing Order

Ford 351M and 400 Cylinder Numbering and Firing Order
Ford 351M and 400 Cylinder Numbering and Firing Order

Images related to the topicFord 351M and 400 Cylinder Numbering and Firing Order

Ford 351M And 400 Cylinder Numbering And Firing Order
Ford 351M And 400 Cylinder Numbering And Firing Order

Are 351M and 400 heads the same?

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

What does 351M 400 mean?

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 was first introduced by Ford in 1971 while the Cleveland was still being produced and used Cleveland 2V heads.

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