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No there is no "big" or "small" block Pontiacs. The terms "small" and "big" block are Chevy & Ford terms. Pontiac blocks were thesame physical size from the 1955 287 right through the last 400 cast in 1978. All blocks had a bore centerline of 4.62 inches, which puts them right between the small block Chevy (4.40 inches) and the big block Chevy (4.84 inches). There were short deck versions built- the 1969-1970 303 race engine (about 25 made), and the production 265,301 built from 1977-1981.
ALL 287,316,326,350,347,370,389,400,421,428,455 engines are the same exterior block dimensions.
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What is the cylinder bore on a 400 small block?
a 400 small block Chevy has a 4.125" bore.
What year did they stop making the 400 small block Chevy?
1981 was the last year the 400 small block was made.
Will a transmission from a 400 small block fit a 350 small block?
Yes.
What is the firing order for Pontiac 400 engine both small block and big block?
The firing order for the Pontiac 400 engine is that the small block powers the big block.
Is the 400 a small block or big block?
The 400 Chevy is a small block engine. The 400 BIG BLOCK Chevy does not exist! 402 big block Chevy does. it seems in the early 70s Chevy put 402s in their pick ups and they had 400 badges. this opened the can of worms known as the non-existant big block 400.
How do you turn a small block 400 into a small block 454?
get a big block or bore it 54 over
Can you put a big block crank in small block 400?
No
Does a 1968 firebird have a big block 350?
Pontiacs did not have "big" or "small" blocks. Your '68 could have come with a 350 or a 400 cubic inch motor.
Where is the battery in a 400 small-block engine?
There is no battery in a 400 engine.
How many Chevy small blocks are there?
350 and under are small blocks. There is also a 400 small block but there is a 400 large block. 396 and up are big blocks.
Did Pontiac firebird have a big block 400 in 67?
There is no Big block or small block in Pontiacs. They were the same size. "67 did have the 400 and 400 HO available for the Firebird.
How much horsepower does a 400 small-block have cast number 3951509. out of a 77 4x4?
The original horsepower for a 400 small block, cast number 395-1509, was 295. The 400 small block engine had many variations resulting in different amounts of horsepower.
