me again. i checked the timing on my chevy 250. it's at 4 degrees with out vacuum,is that right?
no one knows what the timing degrees are supposed to be???
6 degrees BTDC. Or give it as much as possible & not have the engine detonate.
If it detonates back off the timing.
This will give you better mileage. Running as much timing w/out detonating.
The timing varies from different models & different years.
MBHD