How Much Horsepower Does A Chevy 400 Big Block Have?



Does Chevy make a 400 big block?

It has a 400 BIG BLOCK in it (not talking a bore 396 or bore 350 bowtie or stoked 350, or a sb400), just a stock 400 chevy BB here we go again. Anyone else ever try to convince people that there is no such thing as a 400 CHEVY BB.

Is a 400 big block a good engine?

Though conventional in design, the pushrod V8s were capable of high performance, and garnered a reputation for durability. For years, the largest "B" engine was the 383 cubic inch V8.

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1974 horsepower 400 440
2-barrel 185 @ 4,000
4-barrel HP 250 @ 4,800 275 @ 4,400
Police 240 @ 4,800 275 @ 4,400

What's the difference between a 400 small block and a 400 big block?

Though big-block engines are significantly larger than their small-block brethren, the true difference between these two is more about displacement, bore, and stroke than strictly size. Typically, big-block engines have displacements of greater than 400 cubic inches and small block engines have a smaller displacement.

How much power can you get out of a 400 small block?

With timing and jetting maximized, the 400 managed to produce 458 lb-ft of torque at a still low 4,000 rpm, while kicking up the peak horsepower to just 401 at 5,400 rpm.

What liter is a Chevy 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.

Is a 400 small block?

Introduced in the mid 1950s, the small block Chevy (SBC) used a standard V-8 engine block design that was physically smaller and lighter than the Chevy big block engines. They have been built in different displacements ranging from 262 to 400 cubic inches. Both the 350 and 400 cubic inch engines are SBCs.

Who made a 400 motor?

Origin of the 400

The Pontiac Motor Division built the 400 from 1967 through 1978. Although it found its way into many 1979 automobiles, those were actually purpose-built leftovers manufactured in 1978.

What Chevy came with a 400?

What Did 400 Sbc Come In? It had long been accepted for use in Chevrolet and GMC full-size trucks, including 1/2-ton, 3/4-ton, 1-ton, and sometimes even larger duty trucks such as K5- Blazer trucks. Until the 1976 model year, it powered midsize A-Body and full-size B-Body passenger cars.

Is a 400 Mopar a big block?

The Mopar 400 Big Block engine for Chrysler, Dodge and Plymouth makes is a member of the B-series of V-8 engines. This series included with 350, 361 and 383 cubic inch displacements. The 400-cubic inch engine was introduced in 1972 in a high-performance and a standard version.

Is the 400 a Hemi?

Best of all, aside from the machining, this Chrysler 400 engine can be built at home. There were no exotic Hemi parts in this engine, and no black-magic porting was done to the cylinder heads or intake manifold. Mopar fans, start scrounging eBay or your local swap meets and salvage yards.

How much HP can a 440 block handle?

Although the most powerful factory stock 440 engines produced a rated 390 gross horsepower, the OEM blocks can take power in the 600hp range, and survive practically indefinitely at the 500-550hp level.

Is a 400 SBC internally balanced?

All Chevrolet small-blocks are internally balanced, with the exception of the 400 cubic-inch small-block, the 400 cubic-inch engine-flywheel has a counterweight mounted to the flywheel plate.

How much horsepower does a stock Chevy 400 have?

From the factory 165 hp and 200hp. Depending on the year, in the 1970s 265 hp to 300 hp depending on how it was configured, 4 barrel, compression ratio ect.

How much does a Chevy 400 small block weigh?

How Much Does A 400 Small Block Weigh? In many Chevy or GMC truck and car lines, the 400 SBC is easily compatible with an engine other than the 350CID small block, such as a Chevy or Buick engine. The engines also weighed about 575 pounds each.

Does a SBC 400 need steam holes?

The 400 ci block is the only Chevrolet small-block that has the steam holes on the deck surface. The Chevrolet small-block is by-far one of the most versatile V8 known to man.

What makes a 434 small block Chevy?

The Big Dawg 434 was born from street racers who requested a more streetable version of the company's rowdy—and race oriented—765hp Sportsman 434. The result is a small-block the pushes the dyno needle to 700 hp but still runs on 93-octane gasoline.

Can you stroke a 400 SBC?

Yes, you can stroke a 400, not sure how far tho, at some point, the connecting rods and the camshaft try to occupy the same space at the same time. Some of the aftermarket blocks have raised the cam to give more room.

What years did Chevy use the 400 small-block?

Chevy's small block engine from 1970 to 1980 was an enormous displacement engine with its 400 CID in that capacity. In its primary use, it powered Chevy's heavier passenger cars and light-duty trucks that ran at low fuel consumption and high Torque rates.

Can you put Vortec heads on a 400 SBC?

Back in the May '11 issue, we brought you the first part of our budget-built 400 small block Chevy. The idea was to bolt a set of iron Vortec heads on a junkyard 400 small block Chevy, add a cam, and enjoy the torque. Right away, we ran into snags.

400ci Engine Blueprinted.

Operation COST
Machine Work total $810.00

What’s the difference between 351M and 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.

How much horsepower does a Pontiac 400 engine have?

The 400 remained in production through the 1978 model year, with 1979 cars receiving engines produced the previous year. In basic 2-barrel form it produced 290 horsepower and 428 ft. pounds of torque in 1968. This was the engine installed in Pontiac's "executive" line of large cars and its largest station wagon.

Is a Pontiac 400 a good engine?

Performance. The Pontiac 400 engine was used as a high performance engine in sports cars, and it was used in large cars as a workhorse type engine, strong on power, though not as speedy as the higher performance engines. This was accomplished to a large extent by the use of carburetors.

What cars had a 400 SBC?

The Chevrolet 400 was introduced in 1970, and used in full size (Impala, Caprice, etc. and midsize (Chevelle) through the 1976 model year. It was utilized in light duty trucks through the 1980 model year. They were quite common in early to mid 70's full size wagons.

What is the most powerful small block engine?

The most powerful small block ever produced is the LS9 engine used in the current Corvette ZR1. It is rated at 638 horsepower, making it the most powerful engine ever produced by GM for a regular-production car. The lowest-output small block was the 1975-76 262 V-8 rated at 110 horsepower.

Did Oldsmobile make a 400 engine?

400. The 400 cu in (6.6 L) version was the second tall-deck "big-block" Olds. Two distinct versions of the 400 CID engine were made: 1965-1967 "Early" 400s used a slightly oversquare 4.000 in (101.6 mm) bore and 3.975 in (101.0 mm) stroke for an overall displacement of 399.6 cubic inches (6,549 cc).

Did Chrysler make a 400 engine?

The 400 cu in (6.6 L) B engine was introduced in 1972 to replace the venerable 383, and were power-rated via the net (installed) method. Chrysler increased the bore size of the 383 to create the 400. Its bore of 4.342-inch (110.3 mm) was the largest used in any production Chrysler V8 at the date of its introduction.

How much can I bore 440?

I believe standard bore on a 440 was 4.32", so +. 030" would bring you to a max bore of 4.62" (just confirm it hasn't been bored before). Any more than that and I would suggest doing more research.

What’s the difference between a 440 and a 440 magnum?

The 440 'Magnum' in 1967 ONLY had a ONE YEAR ONLY closed chamber '915' head with the larger 1.740 EXHAUST valve. The intake valves never went past 2.080 for the entire run through 1978. The '440 LP' version was a 350 HP engine, while the '440 Magnum' was rated at 375 HP. there were TWO different '915' heads.

What is the 400 engine?

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.

Is the 440 a good engine?

We all know the 440 big-block is the largest displacement V-8 engine built by Chrysler, and when it comes to a combination of torque, power, and drivability, the 440 ranks as one of the best engines ever built.

What’s the difference between a 383 and a 440?

The major difference between these two Mopar legends is the deck height of the block: 9.98-inch for the 383 and 10.725-inch for the 440.

How big can you stroke 440?

Yes a 4.75 stroke will go in a 440 block with some grinding.

Is the 440 a Hemi?

Arrington Engine's New-Style 440 From A Hemi

The newest version of the Hemi was always a well received engine, and the aftermarket has really started to embrace it and make a lot of good, performance-oriented parts for it.

Images for How Much Horsepower Does A Chevy 400 Big Block Have?

A small block 350 and a 400 have an identical block design. Most accessories will fit either engine. The major difference is found in the casting numbers and the way they are balanced. Most 350 cubic inch engines are internally balanced whereas the 400 engines are not.

With timing and jetting maximized, the 400 managed to produce 458 lb-ft of torque at a still low 4,000 rpm, while kicking up the peak horsepower to just 401 at 5,400 rpm.

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