The firing order should be cast into the intake manifold. It may take some work to find it but it should be there.
Rear head 1,3,5Front head 2,4,6Firing order 1,2,3,4,5,6Rear head 1,3,5Front head 2,4,6Firing order 1,2,3,4,5,6
153624
The firing order of almost all engines is stamped into the intake or head.
Holden 302 V8 Its actually a Holden 308 Or a Buick 401 or 425 (referred to as the "Nail Head")
The firing order is 153624 #1ON DIST-CAP IS JUST AFTER LOCKING SCREW FERVEST FROM THE CYLINDER HEAD.
The firing order is counter clockwise: 13726548. The head on the right is 1234
Depends on the engine size, make, and model which you fail to list.
The firing order for the 2.8 v6 engine is 1-2-3-4-5-6 it is caste right on the front cylinder head
1, 5, 3, 6, 2, 4.
Firing order is 1-8-7-2-6-5-4-3Drivers side head front to back are cylinders 1-3-5-7The other head front to back is 2-4-6-8
Drivers side head front to rear is 1-3-5-7 The other head front to rear is 2-4-6-8 and the firing order is 1-8-7-2-6-5-4-3
Procedure to change 1988 Buick regal head gasket