I have a clifford 4brl intake a header and a 580 (i was told 580 i believe 570) holley 4brl carb ,intake has the bosses whats a good price to ask for this if I chose to sell it ( how much is it worth)

Does the carb have a list number on it?

R-6454 or 0-1850-2 (should be on the main throttle body somewhere with the Holley name...not on the bowls...)

-D.Idiot

It is a holley carb the guy I got it from said it was a 580 but I don't know for sure it looks very similar to a 570 street avenger that I see advertised in the mags.

I can't believe that no one knows what this would be worth in good used condition!!!!!

I bought a good used clifford with the adaptor plate off E-bay about 9 months ago for $95 . This was cheap and I see them usually going for about $150-175. Used carbs depends on if you know it is good and does not need a rebuild? You can buy a new carb for about $225, so buy accordingly.

Rick