The firing order for the Pontiac 400 engine is that the small block powers the big block.
1,8,4,3,6,5,7,2.
All small block chevy's standard firing order is 18436572.
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
A 1969 big block 396 firing order is 1-8-4-3-6-5-7-2
Check on the engine block or intake manifold of your motor. Most engines are cast with that information right on it.
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.
1-8-4-3-6-5-7-2
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