How Much Horsepower Does A 1971 Boss 351 Mustang Have?
330 hp.
This was one of Ford’s hottest-performing small-block cars, and it was all thanks to the R-code V-8 351 Cleveland under the hood. It spat out 330 hp at 5,400 rpm and 370 lb-ft of twist at 4,000 rpm—more than enough to slap around many big-blocks.
How much horsepower does a Boss 351 have?
It was awesome to see and hear these legendary Ford engines run in anger, and the Boss 351 demonstrated its worth by producing 383 hp and 391 lb-ft of torque. This output made it not only more powerful than the Boss 302 (by 9 hp), but arguably the most powerful muscle car small-block ever offered!
Was the boss 351 a good engine?
It was hailed by many as the best Boss yet, with more horsepower than the Boss 302 and more usable performance than the Boss 429. But the writing was on the wall for the genre and factory supercar sales slid precipitously in ’71.
How much is a Boss 351 worth?
A: The average price of a Ford Mustang Boss 351 is $76,593. Q: How many Ford Mustang Boss 351s were produced? A: 1806 Ford Mustang Boss 351s were produced in total.
What is a 351 Boss engine?
The 351 in the ’71 Boss was Ford’s 351-cid Cleveland engine, nicknamed for the Ohio plant that built it. The 351C shared little more than bore and stroke spacing dimensions with the 351 Windsor used in the 1969 Mustang. Its advantage was deeper breathing, a result of huge ports and valves in the cylinder heads.
How much horsepower does a 1971 351 Windsor have?
Engine Basics
| Year | 1971 | 1971 |
|---|---|---|
| Displacement | 351 cu / 5.8 liters | 351 cu / 5.8 liters |
| Power (hp) | 240 hp @ 4600 RPM | 285 hp @ 5400 RPM |
| Torque (lb/ft) | 355 lb/ft @ 2600 RPM | 370 lb/ft @ 3400 RPM |
| Compression | 9.5:1 | 10.7:1 |
Is a Boss 351 a Cleveland engine?
The one-year-only Boss 351 was the ultimate factory-built Cleveland, tagged R-code and also identified as “351 H.O.” The new Boss capitalized on the Cleveland’s inherent high-rpm breathing capability with 11.7:1 compression and performance goodies that included four-bolt main bearing caps, forged pistons, shot-peened
How much horsepower does a 1971 351 Cleveland have?
Engine Basics
| Year | 1971 | 1971 Boss |
|---|---|---|
| Displacement | 351 cu / 5.8 liters | 351 cu / 5.8 liters |
| Power (hp) | 240 hp @ 4,600 RPM | 330 hp @ 5,800 RPM |
| Torque (lb/ft) | 355 lb/ft @ 2,600 RPM | 380 lb/ft @ 3,400 RPM |
| Compression | 9.5:1 | 11.0:1 |
How much horsepower does a 1970 351 Windsor have?
Engine Basics
| Year | 1970 | 1970 |
|---|---|---|
| Displacement | 351 cu / 5.8 liters | 351 cu / 5.8 liters |
| Power (hp) | 250 hp @ 4600 RPM | 300 hp @ 5400 RPM |
| Torque (lb/ft) | 355 lb/ft @ 2600 RPM | 380 lb/ft @ 3400 RPM |
| Compression | 9.5:1 | 11.4:1 |
What is a 1971 Mustang worth?
Vehicle Valuation Analysis
| Bodystyles | Median Sale |
|---|---|
| Convertible | $10,750 |
| Convertible | $17,050 |
| Fastback Coupe | $22,750 |
| FastBack Coupe | $44,000 |
What year did the Boss 351 come out?
1971
But Ford had something special planned for 1971: the Boss 351 Mustang.
What year was the Boss 351?
1971
The Boss 351 was only available for the year 1971 and was slotted under the Boss 429. As the name suggests, it features a 351 cubic inch V8 engine, mated to a 4-speed manual transmission sending around 330 horsepower and 370 lb-ft of torque to the rear wheels.
Why was it called a Boss Mustang?
It was one of the first production models with a front spoiler and rear deck wing. The name “Boss” came about when Shinoda was asked what project he was working on, he answered “the boss’s car” because the project was a secret.
How much horsepower does a 1971 Mustang have?
“Ford cut the horsepower in 1971 to a mere 330, and yet with only 351 cubic inches, the Boss 351 would run with—or some say ahead of—the big-block 429 with 375 hp.
What makes a Ford engine a Boss engine?
Boss is the internal name for a family of large-displacement V8 engines from Ford Motor Company intended to compete with Chrysler Hemi engines and General Motors’ 6.0 L Vortec engines.
What engine is better 351 Cleveland and 351 Windsor?
Cleveland: “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.
How can I get more horsepower out of my 351W?
Camshaft Upgrades
In most cases you will see top end power increases through performance camshafts on most engines. Significant gains on the 351W can be made from cam upgrades. Altering the cam profile alters the intake and exhaust durations on the engine and can dramatically change the bhp and power output.
How much horsepower did a 69 351 Windsor have?
The 351 Windsor Engine
There were two versions introduced in 1969, the 250 hp 2 barrel engine and the 290 hp 4 barrel version.
How much HP can a 351 Cleveland make?
Factory rated at 330 hp at 5,400 rpm, this new engine was the highest output that this engine family would see. Other 351 performance engines would follow, but none would match the Boss 351.
How much horsepower does a 1970 351 Cleveland have?
Engine Basics
| Year | 1970 | 1970 |
|---|---|---|
| Power (hp) | 250 hp @ 4,600 RPM | 300 hp @ 5,400 RPM |
| Torque (lb/ft) | 355 lb/ft @ 2,600 RPM | 380 lb/ft @ 3,400 RPM |
| Compression | 9.5:1 | 11.4:1 |
| Displacement | 351 cu / 5.8 liters | 351 cu / 5.8 liters |
How much horsepower did a 1973 351 Cleveland have?
Engine Basics
| Year | 1973 | 1973 CJ |
|---|---|---|
| Displacement | 351 cu / 5.8 liters | 351 cu / 5.8 liters |
| Power (hp) | 164 hp @ 4,000 RPM | 248 hp @ 5,400 RPM |
| Torque (lb/ft) | 276 lb/ft @ 2,000 RPM | 290 lb/ft @ 3,800 RPM |
| Compression | 8.6:1 | 8.0:1 |
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