Aluminum vs Iron compression on pump gas

Mad Dart said
Fishy,

I bought some parts a while ago, the 1.6 Roller Rockers, JOMAR GIRDLES studs etc, and decided to use them on this build. Plus I wanted a CLOSED combustion chamber and attempt a tight quench and run higher compression and bigger camshaft on PUMP fuel if it is possible. I understand that there will be more stress and hopefully the use of BEE-HIVE valve springs will help with this issue.

I really got caught up on the EQ heads and how much flow was available for an Iron Head without the CRACKING issue compared to stock casting Iron Heads.

I hope this explains.

I gotcha Mad Dart. Same reasoning I used. I'm in the same boat doing a stroker (on hold due to medical bills eating up the engine funds) and I bought a set of the Hughes Iron Rams/EQ heads. After I got them and found out the extra's I needed to make them work I wished I had gone with Eddy's so I wouldn't have had to buy girdles and tall valve covers. Plus the weight savings of aluminum would have been nice.

I have looked all over for a set of tall valve covers but haven't had much luck finding them for the magnum heads. What did you buy?