I have ran many different aluminum heads, many. I ran aluminum chevy heads in the early 90s and no trouble ever. My 1985 3 wheel ATV has a aluminum head also and it still runs great.

First time I have ever heard of that. I have run aluminum heads on BBC, SBC, BBM, and SBM and Brad hemi heads and others I'm sure.

I have had a set of eddies on my 340 since 2007 and have driven the car almost 20K miles so far in some really hot and cold conditions. Like Vegas in July and Reno in Aug and pikes peak at 32 degrees. Plus ran the car wide open at Bonneville for miles at a time. I put my 340 eddie heads though extremes and they have held up great.

Can't believe what people say, just like the internet. We are all full of sh!t.

The only way to find out for sure is to get off the internet and just go do it yourself and become experienced.

Good thing my Brad heads didn't go "soft"!