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Depends on which Pontiac engine you are referring to. Any GM engine 400 cubic inches and under are considered a small block with two exceptions. The 396 is a big block and there were certain 400's that are big blocks. Two versions of the 400 were built.
WRONG. All Pontiacs from 326-455 are the same size block externally. The only major difference is that the 326, 350, 389, and 400 have a 3" main bearing size. The 421, 428, and 455 are 3.25" mains. Now...if you are talking about comparing a Pontiac block to say a Chevy block....the Pontiac is larger than a small block and slightly smaller than a big block.
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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.
What are the specs on the rockers on a Pontiac 400 small block?
no such thing as a pontiac small blockstock they rockers were 1.5 ratio
400 firebird big block or small?
There is no "small block" , "big block" with Pontiac engines. The physical size is the same from 326ci to the 455.
Is a 400 engine in a 68 firebird a big block or small block?
Pontiac uses same block no small or big, Chevy describes their engines small or big
Will a starter for a small block Chevy fit a 455 Pontiac?
no
Will Chevy small block headers fit a Pontiac?
Not even close...
What is the torque specs on a Pontiac 350 Big Block?
First its not called a big block, Pontiac never made a small block. it is just called a Pontiac 350. as far as tourque i t ranges from 150 to 400 depending on the year and trim
Will 68 Pontiac 350 headers fit 383 Chevy stroker?
No. The Pontiac headers will not bolt up to the Chevy small block.
Will a small block chevy heads fit pontiac 400?
No, no, no. Two totally different motors.
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.
What is the firing order for a 1970 Pontiac Lemans?
Alright if it is the small block 350 which i think it is unless there had been a engine swap it is 1-8-4-3-6-5-7-2 in a counter clock wise rotation... hope this helpedFor a Pontiac engine this info is correct. But there is no small or big block Pontiac.
What is the firing order on a 1976 Pontiac 350 big block?
GM big blocks start with the 400. There are two 400s, a small block & a big block. The 350 is a small block, not a big block. Firing order is 1-8-4-3-6-5-7-2
