Hey guys. I've rebuilt my 69 350 and was wondering. Can I run and aluminum intake with my factory cast iron Heads ???

 

I run a 3711 edelbrock on my 75 350 with #5's

 

Yes.

 

People have been doing it for over 50 years.

 

These days people seem to like performer edelbrock
Bolt on and go

 

I've ran her with them before. But now a buddy of mine has informed me on the relate difference of heat transfer between the 2..

 

There is a difference in heat transfer but a lot of weight savings, like 40 pounds. Remember Olds did this factory on the 307 in the 80's. Supposedly back in the day, they leaked around 100K, talking daily drivers with a lot of heat cycles.
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There are about a bazillion engines on the road with iron heads and aluminum intake, including every factory-built 1970 W-31 and 307s with A4 and A5 intakes. And since gaskets will likely come up, those factory aluminum intakes also used the metal turkey tray gasket.

 

Most of us have had 0 issues using the steel turkey tray gaskets, no sign of gavalinic corrosion.