mileage. the harder i try the worse it gets...

Rcuda2 said
You said the idle screws are backed out 2 1/2 to 3 turns to get it to idle - 1 1/2 turn out is closer to what it should be. With the cam you have, I'm guessing that idle vacume is low. That lets the carburator jet needles lift - not enough vacume to hold the needle down in the jet. If this is what is going on - use lighter springs under the needle rod pistons or clip a couple of coils off. That will let the needle rods be lower in the jet at idle and also at cruising speeds - leaner fuel mixture - better milage.
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makes sense to me. i have another old performer thnk ill try cutting the springs and see if that helps. i didnt think my cam was that big. i do know that since i changed the cam my heat controls are very sluggish to change vent to defrost. it the rain stops ill give it a try tommorow.