4, to 6 degrees advanced, or BTDC.
cam timing will not change ignition timing i would try 8 or 10 degees advance at idle with the vacuum advance disconnected.
Yes, beginning in 1977.
10w-40.
45, for an iron intake, 35 for aluminum.
what are the factory timing specs for a 1977 chevy 454
how do you adjust the timing on a 1977 350 Chevy engine k-10
One of the valve covers will have a plug, you can pull out. Usually the driversn side.
chain
9:1.
Yes. It should bolt right in.
No there is no "big" or "small" block Pontiacs. The terms "small" and "big" block are Chevy & ford terms. Pontiac blocks were thesame physical size from the 1955 287 right through the last 400 cast in 1978. All blocks had a bore centerline of 4.62 inches, which puts them right between the small block Chevy (4.40 inches) and the big block Chevy (4.84 inches). There were short deck versions built- the 1969-1970 303 race engine (about 25 made), and the production 265,301 built from 1977-1981. ALL 287,316,326,350,347,370,389,400,421,428,455 engines are the same exterior block dimensions.
8 degrees before top dead center