What carburetor

Csk158 said:

What size carburetor for 65 coupe, manual transmission, 289 30 over 10.5 to 1 compression ,aluminum heads (Dart). Edobrock air gap Intake. 355 or 373 gears. Cam specs say 2500 to 6500.msd drop in distributor. Street car don't car about mileage not a daily driver. But something that will run good. Builder says 600. I am thinking 500 maybe 570. The calculator says 515. If I go with a 600 or a 570 will it need to be jetted way down. Any real world experience.

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Your builder is probably pretty close.

You're sitting at 293cid, and with those heads and that cam, you're going to be missing quite a bit of power with anything smaller than about 570-600cfm.

If you want good street manners with your combo, an Edelbrock 600cfm (part number 1406 for electric choke, 1405 for manual) would be really hard to beat. A smaller carburetor will give you slightly better throttle response at the expense of not being able to take full advantage of that cam. If you were leaning more towards a street/strip motor you could even go a little bigger with a 625 or 650, you've got a lot of airflow on that top-end.