Are all Pontiac blocks the same?

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.

Is 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. Thus, segregating engines and engine families into small and big block categories became useful shorthand.

Did Pontiac make a 426 engine?

Pontiac increased the 421’s bore to 4.12 inches, which produced 426.5 ci when combined with the 4-inch-stroke crank. To maintain its own identity in a market filled with the 426 Hemi and 427 Chevy, Pontiac’s was billed as a “428.”

What liter is a 400 big block?

6.6 liter
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. It debuted in 1970 and was produced for 10 years.

Did Chevy make a big block 400?

In 1971, Chevrolet offered its 402 big block as a “400 big block” which is where the confusion comes in. You’re right, there was never an official 400 big block, but Chevy did market one for one year. In 1971, Chevrolet offered its 402 big block as a “400 big block” which is where the confusion comes in.

What is the bore and stroke of a Pontiac 400?

Stock Pontiac 400 Specs: 400 standard bore is 4.120, stock stroke is 3.750, stock rod length is 6.625, stock wrist pin size is .9805. CID: Cubic inch displacement of engine. Bore: Finished cylinder bore size, in inches that pistons are designed to work in.

What is a Chevy 400 small block?

small block 400 is for cars- long 400 is for usually pick-ups and larger trucks.most common is chevy. the piston rod stroke is longer and to create more torque but you sacrifice rpm.

What are Chevy small block engines?

The Chevrolet small-block engine is a series of automobile V8 engines built by the Chevrolet Division of General Motors using the same basic small (for a V8) engine block. Retroactively referred to as the ” Generation I ” small-block, it is distinct from subsequent ” Generation II ” LT and “Generation III”. LS engines.