If you're running an automatic tranny, you shouldn't probably be running a double pumper Holley. That Edelbrock 750 is more than enough carb for your 360, and "in my personal opinion", a much better daily driver carb than any of the Holley's. Set up the Edelbrock for your engine and leave it alone. Put the Holley on there and keep on tuning! That should get me some flack!! :)