Join Date: Mar 2002
Location: Austin, TX, USA
A compression check would be a good idea. Also it would be interesting to see what a vacuum guage reads at idle. The guage might point to issues with the valve train or ignition timing. I think you'll find the 600cfm carb will work fantastic for a street rod. It's possible the carb needs adjusting or a rebuild. A 750 is pushing it for a 350SBC. IMHO that is better suited for a race motor that reaches or exceeds 7000RPM.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI