Street Avenger 570 Help

Call Holley's tech line if no one gets back to you here. Tell them your problem, they'll help you.

On the size of your carb, it's closer to a 500 than a 600. The comparable cfm ratings on avenger carbs., compared to wet flowed carbs., are 10% smaller than advertised.

I bought a 770 thinking it was a good fit, but heard otherwise. When I pressed Holley on the cfm size, they explained the difference. It was basically a 700. I sent it back for a full refund.