Longevity of Aluminum Heads

[The Dan]

I was wondering what the longevity of aluminum heads are? I know an engine will last longer if not "hot rodded" a lot, but are the aluminum heads expected to live as long a life as cast iron? I only ask becasue I've deceided to make my FB a daily driver and sell my F-150 Harley Supercrew, and I'd like to put a little more getty up under the hood. I've been spoiled by a supercharger! Anyways, I have a set of AFR's on the way, and don't know if I should hold off on the aluminum heads if they aren't going to do as well for daily driving. Opinions?

Thanks.

 

[302 coupe]

you do know that your F150 had aluminum heads right......were you worried about driving it everyday? I didn't think so. Aluminum is fine for the street.

 

[TT670]

Theres no reason for them not to last as long as cast iron, neglecting coolant might cause some electrolosis after a number of yrs.

 

[The Dan]

Actually, I didn't know that they were aluminum on the HD, but your point is noted.

 

[Mr44666]

Well, my BMW has nearly 250,000 miles on it. I had to remove the head to replace a rocker arm, so I sent it to a machine shop. It only needed valve stem seals and a very small amount of milling. I see this same thing all of the time with aluminum head- cast iron blocks.
So, yes an aluminum head works just fine for longevity. The important thing is to not overheat it or it will warp.

-Dave