OldRadioTech
Junior Member
- Joined
- Dec 25, 2024
- Posts
- 2
- Reaction score
- 0
- Location
- Cottage Grove Oregon
- First Name
- Paul
- Truck Year
- 1965
- Truck Model
- K10 Suburban
- Engine Size
- 350HO
Not a square body guy but thought this forum might give me some good answers. New 350HO installed. Instructions state "Start the engine and adjust the initial timing. Set spark timing at 32 degrees before top dead center (BTDC) at 4,000 RPM with the vacuum advance line to the distributor disconnected and plugged. The HEI vacuum advance canister should remain disconnected. This engine is designed to operate using only the internal centrifugal advance to achieve the correct timing curve". I'm confused. Sounds like the vacuum advance line to the distributor isn't used? Or the HEI vacuum arm is disconnected internally? If the vacuum line isn't used then why say disconnect and plug?
Paul
Paul
