Question: Are All Pontiac Blocks The Same?

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..

How much HP does a Pontiac 400 have?

The 389 posted numbers in the 330 horsepower range with a single spread-bore, four-barrel carburetor. The 400 pushed this number up to 360 horsepower, with the same Quadrajet single four-barrel. What sets this engine apart in the history books is the factory-installed high-performance Ram Air systems.

How much horsepower does a Pontiac 350 have?

Dust off Your Small-Bore Pontiac, Stroke it to 383 Cubes and Make 460+ HPHeadsCasting Number#16 small valveCompression Ratio9.6:1ValvesFerrea 2.08/1.71-inAngles Used in Valve JobIntake: top-30-deg, seat-45-deg, bottom-70-deg;Exhaust: top-30-deg, seat-45-deg, bottom-75-deg13 more rows•Dec 1, 2007

What color are Pontiac engines?

Pontiac originally purchased this paint from a company called “Pontiac Paint and Glass”, which no longer exists. Between August 23 and September 7, 1976, the Flint, Michigan Engine Assembly Plant changed the paint colors used on Chevrolet engines from orange to blue.

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 .

Does Pontiac have a big block?

Pontiac differed from most other manufacturers in that the external dimensions of all their V8s, from 326–455 cu in (5.3–7.5 L) were the same. … Pontiac did not have the customary “small-block” and “big-block” engine families common to other GM divisions as well as Ford and Chrysler.

Is a Pontiac 400 a big block?

Ford 332 (5.4 litre) Interceptor big block V8. A Chevrolet Camaro 396 had a big block, but a Pontiac Firebird 400 did not. Buick and Oldsmobile 455s were big blocks, but a Pontiac 455 was not.

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.

Is a Pontiac 400 the same as a Chevy 400?

Ehhhhhhhhhhhh, the Pontiac 400 has the same bore and stroke as the 400 chevy. It has 3 inch mains that soak up 80hp from the overall flywheel horsepower figure, not!

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 does the GTO stand for?

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. Enzo could have christened his car “the ultimate,” and we wouldn’t quibble.

Did Pontiac make a 428 engine?

The Pontiac 428 cubic inch engine was used only from 1967-69. It was one of the largest engines Pontiac produced, but it was used more to power big cars such as the Bonneville, and not as much for performance cars such as the Firebird.