Is A Pontiac 400 The Same As A Chevy 400?

How much can you bore a Pontiac 400?

Most Pontiac blocks can tolerate an overbore up to 0.060 inch, and possibly more after proper thickness testing.

Boring and honing should always include a honing plate..

What Chevy came with a 400?

The 400 small block Chevy was produced from 1970 until 1977. It was originally installed in big sedans and wagons, but later found its way into some trucks. I don’t believe it was ever put in the Chevelle or Camaro. A co-worker has a very healthy 400 in his ’88 Corvette.

Is Pontiac 455 and 400 the same block?

The 400 and 455 blocks share the same size externally, but they are two different blocks internally. The 400 has a 4.12″ bore and the 455 has a 4.151″ bore, but the most you can go is 4.18″ on the 400- also a good idea not to go beyond .

Will SBC 400 heads work on a 350?

The only difference is that 400 heads have steam holes drilled in them for the 400 block. You can put 400 heads on a 350 but you should not put 350 heads on a 400 without drilling the steam holes.

Did Pontiac use Chevy engines?

Pontiac engines were used in its U.S.-market cars; Canadian-built Pontiac automobiles generally used Chevrolet engines. From 1955 through 1959, the Pontiac V8 was also used in some GMC pick-up trucks.

Is a Pontiac 400 considered a big block?

Then there are the big blocks which is an entirely different casting and is bigger in physical size when compared to the “small” blocks. Some big block sizes are 396, 427, 454, 502, etc. Notice the “Small” block family has a 400 and the “Big” block family has a 396. Again cubic inch is NOT the deciding factor.

What is the difference between a Chevy 350 and 400?

The Chevy 350 cubic inch engine has a 4-inch bore whereas a 400 cubic inch engine has a 4.125-inch bore. The 350 has a 3.48-inch stroke, and the 400 has a 3.75-inch stroke. The 350 rods are 5.7 inches whereas the 400 has 5.565 inch rods.

How much horsepower can a Pontiac 400 make?

For this engine, TIP will use the 74cc 340-cfm versions to keep compression pump-gas friendly at 11.4:1 while still providing enough airflow to produce 600-plus hp….Engine Buildup WorksheetEngine Displacement463Horsepower650Torque596 lb-ftBore/Stroke4.185/4.21-in4 more rows•Sep 1, 2008

How do I identify a 455 Chevy engine?

455 Oldsmobile Engine IdentificationApplications. Oldsmobile built its 455 engine from 1968 until 1976. … Casting Numbers. The numbers cast on the lower left corner of the engine block — or on the cylinder head — indicate the year the engine was manufactured. … Carburetor Numbers. … Other Identifying Specifications.

Is a Pontiac 400 a good engine?

Because of its place in Pontiac’s most brutal and outlandish muscle cars as well as fighting the good fight into the era of smog-choked, low-compression lameness, the Pontiac 400 remains one of our favorite V-8 engines.

Are all Pontiac blocks the same?

The blocks of all Pontiac V-8s from the 287 to the 455 are the same size and very close to the same weight, which can make it more difficult to identify the 11 different engine displacements produced from 1955–79. Adding to the confusion, multiple block codes were used, and date codes can overlap up to three decades.

Are Oldsmobile and Pontiac 455 the same?

There’s no question that 455 cubic inches of displacement equal a big motor. … In the beginning, you would find them in Oldsmobile Motor Division products. As time went on you started seeing this exact displacement under the hood of Buicks and performance models from the Pontiac Motor Division.

What is the biggest Pontiac engine?

The 455-cu.in. V-8 debuted in 1970 and was the largest displacement Pontiac engine ever built for the street.

What does GTO stand for in the Pontiac?

Gran Turismo OmologatoThis ritual is summarized by the three most famous letters ever worn by an automobile: “GTO” stands for “Gran Turismo Omologato,” which, loosely translated from the Italian, means homologated (recognized for competition) grand-touring car.

How much horsepower does a Pontiac 455 have?

The result was the 1970 Pontiac GTO 455, which was stuffed with a beefy 455 HO V8 long-stroke engine. Rated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.

What year is the best Chevy 350 engine?

L31 (2002) From a purely technical standpoint, the most recent version of the Chevy 350 would naturally be the best of the bunch. Marketed as the “Vortec 5700” engine, but known internally by the moniker of L31, this engine was used primarily in GM vans and trucks until 2002.

What is the best transmission for a 350 Chevy engine?

TH350. Best transmission choice, hands down. The Turbo Hydra-matic 350 was first used in 1969 model cars. It was developed jointly by Buick and Chevrolet to replace the two-speed Super Turbine 300 and aluminum case Powerglide transmissions.

How much does it cost to rebuild a Pontiac 400 engine?

There are those of us who have rebuilt a 400 or 455 from an engine core, so we know what a quality rebuild costs- you’re going to spend $1500-2000 on parts alone and another $750-1000 on machine work (figure another $800-1500 for professional assembly).