I'm sure this questions been asked a thousand times.. but I am looking for a good combo on building my 66 440... anyone know of any articles or sites or personal experiece for proven power? I'm almost positive it's bored over .30 and has 915 heads.. but am leaning towards edelbrock alum. heads... looking to stay around 2500-3000 for dollar wise, currently the motor is complete.... needs new cam bad...... has a demon 750.. what do u think of those carbs?? any help would be greatly apprieciated.. thanks all.. Jason

Just looking for some clarity....
Are you planning on upgrading the motor?(like you want to spend 3K to go faster, or is that including a rebuild?)

If you do some port work on the 915's have decent compression now, and upgrade the cam, you will have a real bruiser, for not a lot of money.

A demon 750 can be a good carb, but it depneds on which demon 750. Speed, mighty, or race. You pick the series to match your cam.

I have had good luck with demon's but some haven't, and even I have questioned thier QC in recent times. I switch my 750 mighty out for a 950 hp bigs, and saw some improvement, but nothing night and day.
Any brand carb will work, as long as it is close on the size, and set up right.

want to up grae the whole motor.. internally if I have to also.... it's a speed demon carb.

depending on your cam, intake and set-up the Eddy heads might be overkill.