Yep. Square bore. But that was a term I've only really used to describe Holley carbs. Most of the time an AFB is just referred to as an AFB. Then I have to describe WTF and AFB is. So, in order not to be AFU, I just went with the anti-spread-bore description and BS'd my way through it, OK?
Had enough? I have.
Scott -
In a word: Yes. Pontiac intake manifolds will interchange from 326 on up to 455, including all motors in between, when using Pontiac heads from 1965 to 1979, with the exception of 301 heads and Ram Air 2,4 and 5 heads. They fit on the Ram Air 2 and 4 heads, but the ports don't match very well.
