Even though you have mis typed the base number 15018 (was 15013), I believe you have matching bores of a 261 carb and manifold and the wrong gasket and/or insulator. I DO NOT know if you have a 235 or a 261 motor.
Ronnie, I agree it is a 261 base. When I google 7005608 I don't get anything. When I go to the CarbsUnlimited link and use their search button on that number, I don't get anything. That's all I was saying. Just my confusion. No sweat. When I google Rochester 7005608, I do get to Carbs Unlimited.
