I think you're going to find you are over carbed for a 235. Did you consult edelbrock support on your application. I put that same carb on a 307 and it does well. But 70 less cubes its not going to meter fuel correctly.

1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado