With all the crap that happened recently, I decided to take out my frustrations on a set of 596 heads. I haven't ported a head in 20+ years, never done a pair of SB mopars, and the last set I did was a pair of BB Chevy heads running a huge roller.
I messed up one port at the pushrod pinch and laid back the short turn too much on two. The laid back short turn was from my memory of what worked on a BBC head and this one won't be running near the camshaft that Chevy ran. I bet I messed up the low-mid range flow, but, Oh well, that's what epoxy is for to reshape it. :-D
I did all of it with a 3/8 tree bit, nothing else. Could have used a 1/4" and 3/8" round end cylinder and a 1/4" ball. What do you want from a borrowed bit.
I messed up one port at the pushrod pinch and laid back the short turn too much on two. The laid back short turn was from my memory of what worked on a BBC head and this one won't be running near the camshaft that Chevy ran. I bet I messed up the low-mid range flow, but, Oh well, that's what epoxy is for to reshape it. :-D
I did all of it with a 3/8 tree bit, nothing else. Could have used a 1/4" and 3/8" round end cylinder and a 1/4" ball. What do you want from a borrowed bit.
