[bmcmillan]

I'm a little late on this thread but I have just been through this. The Edelbrock heads don't flow enough air to justify the big valves. I suggest you run the diffrent configurations through one of the computer dyno programs. I think you'll see that bigger valves give you no more hp and actually hurt the torque.

I would really suggest the Keith Craft ported Edelbrock heads. IMHO, I think you are wasting your money bolting on stock Edelbrock big-valve heads. Also, get the 72cc heads.

Good luck,

Brian