Im going to be rebuilding the little 330 in my Vista. I talked to the local machinist about it and he pulled his Comp book out and turned to the page that had this cam listed, in the book it says this cam has better torque and lower rpm power. When I got home I looked it up and on the Summit site it says for engines up to 7.4. I know a cam will act different in a 330 than a 455. So how does this look? I just want to help that little engine pull that heavy Vista Cruiser up hills a little better.
COMP Cams 42-221-4 COMP Cams Xtreme Energy Camshafts | Summit Racing

 

That looks like it will work fine with a 330. What compression are you planning on?

 

At this time i'm looking at the stock compression ratio of 10.25 unless I find a little lower compression pistons.

 

Do you know if your 330 is a 45 degree lifter angle or 39 degrees? It will matter with that cam.

 

Its the original '67 engine. My machinist says it works for this engine.