How much PSI for Edelbrock Carb
 

I have an Edelbrock Thunder Series 650 cfm 4-barrel carb. Im not sure how much psi it needs.

It been a while but 6-8 PSI for carb sound about right. Its a standard for all carbs. You setting up a system or working on a problem?

Edelbrock says fuel pressure is not to exceed 6 psi at idle, and recommends setting it at 5.5 psi (if you have an adjustable regulator).
http://www.edelbrock.com/automotive_...ers_manual.pdf