I'd like to recommend the Weiand Stealth. It delivers at a broad RPM range and is a high rise dual plane design that acts like a single plane at high RPMs. It is made by a division of Holley. For a carb I like the Holley 600 CFM vacuum secondary. An alternative carb, if Holleys intimidate you, is the Edelbrock AVS which uses air velocity to activate the secondaries, instead of vacuum as the Holley does.
I advise staying away from a mechanical secondary carb for a street car. Your drivability and fuel economy won't be as good.
As for HP gain, 20 sounds about right with a good exhaust sys., of course this is a guesstimate. I don't know what your plans are for exhaust, but you are going to have to upgrade it to go along with the increase in intake flow. Easier in and easier out. It's all about getting a package that works with one another. Remember 302 cu. in. is a small engine. Don't fall for the big is good, so bigger must be better deal. Go too big and you'll loose all of your bottom end "Grunt"
As for where to get these parts, Summit, which is in ,Akron, and Jeg's in, Delaware,Ohio, are good places. They have showrooms as well as shipping depts. I noticed that you're in, Lorain, you may want to check them out. |