.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
The horsepower (HP) of a 455 cubic inch Oldsmobile engine, commonly referred to as the Olds 455, varies depending on the specific model and year. Generally, the 455 engine produced between 300 and 365 horsepower in its various configurations during the 1970s. The high-performance versions, particularly those found in the Oldsmobile 442, often approached the upper end of this range. Always refer to the engine specifications for the exact model in question for precise numbers.
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.