4 degrees BTDC ON A 1990 1/2 Ton Truck With The SS-454 With A Throttle Body.
Between 8 and 12 degrees before TDC... My 454 is set at 10 degrees BTDC and it runs great.
4 DEGREES BTDC.
The base ignition timing for a 1974 Chevy 454 engine is between 8 and 12 degrees below top dead center. A timing light is needed to accurate set ignition timing.
what are the factory timing specs for a 1977 chevy 454
what is the ignition timing for a 1988 Chevy 454 engine
timing for the 454 engine is 10 degree's at TDC at 700 rpm in neutral or park
A timing CHAIN
Ignition timing is set on a 1989 Acura Integra by setting the distributor to the appropriate angle. When set at the factory recommended angle the car will turn over with no problems.
Try 8 BTDC and see how it runs.
#1
YES they are the same engines.
were dos the dots need to be on the timing chain together or apart