Guys -

Last year, I was seriously considering going to Edelbrock heads on the 440. The current factory heads have been ported and seemed to work pretty well. I called Edelbrock, Mancini and a few other "names" and the consensus was a consistent "don't bother". They said the improvement, if any, wouldn't be worth it or noticeable. A little surprised, this coming from the guys who sell the stuff. Guess I own them one.

BTW This is for a street engine, around 500 HP, and not a full race rig.

Archer

 

I was wondering the same thing about my heads. I have 915 heads that have been ported and had larger valves with hardened seats installed. I guess maybe I will stop shopping for something new.

 

The only advantage would be if the compression is a bit to high for the street, The aluminum heads will allow it to run better with the higher compression without knocking

 

TV -

With the eddy heads, you have 2 or 3 cc sizes to choose from. Yes, it should keep things cooler, but I was expecting more of a seat of the pants or et change.

BTW - running measured 10.5:1 with the factory (ported heads) about 34 total advance. Kinda sucks, because the aluminum heads just look "cool"... but not 2K cool.

Archer

 

The new Trick Flow heads are the way I would go if I had a reason or the funds to upgrade my old junk.

 

And a waiting list to get them....lol

 

You can get them faster than you think, guys are making power with them now.