Missed on this combo?

yellow rose said

I agree with this but don't get nearly as excited about CFM differences. I'll take less flow with a better port and the correct cross section any day than a bigger flow number.

That's why I was hoping I could flow the head. I would have done more than just put it on the bench and ran numbers at 28"'s.

My bet would be they flow backwards 90-92% (maybe a bit more even) of what they do going forward. That's a big recipie for low speed torque loss.

Click to expand...

I guess my point was more "don't get caught up in CFM's". I'm really not impressed by a 10 cfm gain in moving the pushrods. Especially since that's within their "10%" flow limits. Which to me is just crazy. 10% is huge flow difference between heads.

And of course I'd take a better port and cross section any day. You can port a head to flow almost anything you want and absolutely destroy it in the process. It's easy to makeup numbers on the bench. I'd rather see a good port with less "flow" than a destroyed port with great "flow".