Best Answer

pull out a vaccuum gauge install on vaccuum port of carburetor start vehicle use adjustment screws to pull the most vaccuum as possible on each port,repeat process on second port once adjusted press throttle to around 2000 r.p.m.'s to determine where vaccuum gauge needle is operating at.

User Avatar

Wiki User

โˆ™ 2011-09-13 19:47:45
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: What are the adjustments for the gas and air screws on a Edelbrock 650 4-barrel on a Chevy 305?
Write your answer...
Still have questions?
magnify glass
People also asked