That sounds like the problem but it is rare on that engine. They dont use achain but the 250 comes out with a fibre cam gear. Take the valve cover off & check the location of the valves when at TDC. When you are at TDC the valves on #6 Or #1 should be overlapping. Like the exhaust closeing & the intake opening. If that is correct then your dist. has jumped time.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum