I need information from the guys that have converted to a holley 390 cfm carb and 4 barrel intake. My SU'S give me nothing but grief and I want a change. For a daily driver is the swap good ,great, poor ??? Email me at Pracerz@hotmail.com:classic:

Which SU's do you have? If you have the later flat tops get a set of the early round tops and you'll have a lot less problems.

FWIW, a 4 barrel intake and a good new carb are going to cost almost the same as a set of ZTherapy round tops.

If I were going to spend the money on a four barrel intake, the Holley Pro-Jection might be my pick. Only problem is the price.:sick: