[mrmustang]

First, welcome to Club Cobra, you'll find a wealth of information here.


Second, Olthoff is an excellent place to bring your car, they know it inside and out. I can also suggest Mason's in Spartenburg, SC,(they are a large, old school, very Ford friendly shop) forget about Cobra restorers as the owner passed away two weeks ago, and the shop is in flux at the moment.

Third, having had the same engine in three of my cobras, and having the benefit of unlimited access to a chassis (not engine) dyno, your first carb was way too much for the car, no way to jet it down enough to get it to work well, the second is (670cfm Avenger part # 0-80670) a "show and go" (IE: street rod/ ice cream cruiser) similar to the Edlebrock car line (that is what Holley was going after when they came out with the "Avenger Series"), and was never meant to be a true performance carb. In your case, and with your engine specs, I highly suggest a 650cfm Holley, PART# 0-76650BK, right out of the box you'll love it.

Hope you find this helpful......


Bill S.

PS: Greenville Cars & Coffee is tomorrow at the Michelin building just off RT85, if the weather is good, why not take a drive up......