How Many Horsepower Is In A 400 Cubic Inch Engine?

The 400 pushed this number up to 360 horsepower, with the same Quadrajet single four-barrel.

How much horsepower does a 400 engine have?

With the stock Vortec heads, the low-compression 400 managed to make 376 hp and almost 450 lb-ft of torque.

How much HP does a 400 big block have?

In this application, the 400 had a four-barrel carburetor, had the same 8.2:1 compression, and was rated at 195 horsepower and 305 pound-feet of torque.

How much HP can a 400 small block make?

Equipped with a dual-plane intake, Holley carb, and MSD distributor, the low-compression BPE 400 produced 457 hp at 5,900 rpm and 473 lb-ft of torque at 4,300 rpm.

Is a 400 cubic inch engine a big block?

A 400 cubic-inch Chevrolet Turbo-Fire V8, larger in displacement than a Chevrolet 396 big block, was in fact a bored and stroked small block. A big engine by any standard, but not a big block.

How much horsepower does a 1969 Pontiac 400 have?

330 hp
Like the 326, it was offered in both 2-barrel and 4-barrel versions. In 1968, a 320 hp (239 kW) HO option was offered in the Tempest and Firebird. The 1969 HO 350 HO was equipped with the 400 cu in (6.6 L)’s large valve heads (# 48’s) and the 400 HO camshaft and rated at 330 hp (246 kW).

What is the difference between a 350 and 400 engine?

A 400 cubic inch engine features a larger bore (4.125 inches) compared to the Chevy 350’s 4-inch bore spacing. The 350 features a shorter stroke of 3.48 inches, whereas that of the 400 is 3.75 inches. Moreover, the 400 has 5.565-inch rods, and the previous SBC engine offers 5.7-inch rods (a higher compression engine).

How much HP does a 454 big block have?

The 454 EFI version was rated from 230 hp (172 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque.

What big block has the most horsepower?

Yep, Chevrolet Performance just announced a 632-cubic-inch (that’s over 10 liters for the metric crowd) big-block monster that belts out a tick over 1,000 hp and a whopping 876 lb-ft of twist.

How much horsepower does a 427 big block have?

After running the 427 through a break-in procedure, the timings happy place of 37 degrees was found. This gave a best pull of 622 hp at 6,500 rpm and 530 lb-ft of torque at 5,400 rpm! The nearly flat torque curve peaked at 511 lb-ft at 4,000 rpm, and was still over 500 lb-ft where the pull ended at 6,500 rpm.

What small block makes the most horsepower?

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.

Do big blocks make more power?

Big block engines have more metal and more or larger cylinders. They tend to produce more power and torque because of their weight. Small blocks are just that — small or smaller than big blocks. While small block engines still have metal and cylinders, they are typically smaller and fewer in number.

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.

What is the biggest big block engine?

Never satisfied and always looking to innovate and improve, Leonard decided it was time to create the biggest big-block on the planet: a 1,005.8ci behemoth with an unreal 5.220-inch bore and a 5.875-inch stroke.
Will it Fit?

How much HP can a Pontiac 455 handle?

In its introductory model year as the division’s top engine, the round-port 455ci had a gross rating of 335 hp at 4,800 rpm and 480 lb-ft at 3,200 rpm. The 455 H.O. was carried over for 1972 without any major changes, but the gross output rating was dropped in favor of net values.

Is Pontiac 455 and 400 the same block?

He advises, “With the exception of the mid- to late-1970s PN 500557 casting, we consider all Pontiac 400 blocks functionally identical. The 455 blocks from 1970 to 1976 are also functionally identical.

What was Pontiacs most powerful engine?

The most powerful version of Pontiac’s 400 to ever reach production was the Ram Air IV. With its improved cylinder heads and their round exhaust ports, they’re easy to spot.

How much horsepower does a 1967 Pontiac 400 have?

For 1967, there was one version with a four-barrel rated at 325 hp. For 1968, Pontiac trotted out three iterations of the 400, one rated at 330 hp and the other two at 335 hp.

What was the best Pontiac engine?

The Ram Air IV 400-cu.in. V-8, with 370hp, could be ordered through most of the 1970 model year, but Pontiac intended the 455 to phase out the Ram Air IV, even though the RAIV could outperform a 455 in the quarter mile. For specific power output, Hanks believes the 1969-1970 Ram Air IV was the best Pontiac engine ever.

Which transmission is better Turbo 350 or 400?

1. Is there a big difference between a Turbo 350 and Turbo 400 – and which one do I want? They are completely different transmissions. The Turbo 400 is larger, longer, and heavier than the Turbo 350 and was designed to live behind higher-torque applications such as big-blocks.

How much HP does a 350 V8 have?

Chevy 350 Engine Specs
The Chevy 350 engine is a 350 cubic inch (5.7-liter) small block V8 with a 4.00 and 3.48 inch bore and stroke. Depending on the year, make and model of a car, horsepower ranges from approximately 145 to more than 370.