.030-.045 lower side for points and higher side for HEI
.040 inch , according to my Chilton book
That depends on what motor, the 400 or the 455. The Olds 400's were painted a copper-bronze metallic and the 455's were painted a blue metallic or red on certain models before 1970.
the gap on the distributor points is .016, the timing is advanced 4 degrees and the spark plug gap is .030
Olds never had an engine that displaced 442 cubic inches ( common mistake ) 442 was a model or option designation depending on year built engines available were 330/400/350/455/ Later on 307 General rule of thumb you gain about 2 cubic inches for every .10 over. Example 455 at .60 over would be about 467 to 468 cubic inch engine
yes
No, the blocks are different.
Horsepower TV - 2006 Building an Olds 455 was released on: USA: April 2009
No.
http://www.buicks.net/shop/tuneup.html
That depends on what type of distributor/ignition you are running. Point style, good rule of thumb is .035. HEI is usually .045.
The Oldsmobile 442 means (400 cubic inches-after '65) (four barrel carb) and (dual exhaust) if your car does not have these it is not a true 442. The 350 that year had only 160hp to 180hp but the 442 should have had the 455 and 270hp to 300hp. Are you sure your car is a 442? It may be a cutlass with a 442 paint job.
The answer to the question is 1-8-4-3-6-5-7-2 for a 455 olds engine. Firing order for an olds 455 engine is 1-8-4-3-6-5-7-2