How much HP does a 351M make?
How much HP does a 351M make?
Factory Power Ratings
| 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 |
What does the M stand for in 351M Ford engine?
Modified
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 351M and 400 the same block?
The 351M uses the same block and heads as the 400, with a shorter stroke crankshaft (3.50″), the same connecting rods, and a unique piston with a taller compression height to compensate for shorter stroke with the same rods in the same block.
What years did Ford use the 351M?
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 a 351M and a 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.
Did Ford have a 400 engine?
History of the Ford 400 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.
Is the Ford 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 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 can you tell a 351M from a 400m?
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 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
- 1st number is the year.
- 2nd letter is the month.
- 3rd & 4th number is the day of the month.
How do you tell a 351M from a 400?
the SCROUNGER To answer the question, only the crank and pistons are different between 351M and 400 engines. So the advice to check stroke is the only way to tell – with a rod down the plug hole or pull a head and measure. If you only need to know for intake and headers, they’re the same.
Is a 351M A Big Block?
Other Differences. The 351C used the “Small Block” bellhousing bolt pattern. The 351M/400 used the “Big Block” bellhousing bolt pattern.
