First argument on the new site!!!!

[Randy M]

Just a little mischief here. Cast iron or aluminum heads? :biggrin:

[Dean]

One of each. :biggrin:

[BlueSS454]

I've only installed one set of aluminum heads, on a Mopar 360 engine. So far I personally haven't noticed any significant gain except weight reduction. My Cutlass with an iron headed stock 350 will still out run it :)

[Andy69]

aluminum on the car, cast iron on top of my shoulders

[Grandsport]

I cracked my head a couple of weeks ago at the auction. Darn hood fell on it.

[SSuper Dave]

Rectangle or oval?

[1969 El Camino Dan]

Factory or Aftermarket?

I'll be running a set of big valve ported 781s I got a deal on.
My first set of BB heads.

http://lh5.ggpht.com/_aZniZlzG90Y/SmD1YB1kc9I/AAAAAAAADCw/g78LmiEkRGA/s912/SNC00044.jpg

http://lh5.ggpht.com/_aZniZlzG90Y/SmD1diGCETI/AAAAAAAADC4/97biZZKCxG4/s912/SNC00046.jpg

Dan

[RobertM]

I've only installed one set of aluminum heads, on a Mopar 360 engine. So far I personally haven't noticed any significant gain except weight reduction. My Cutlass with an iron headed stock 350 will still out run it :)

Well, it is a mopar so that isn't saying much now is it? :biggrin:

[SS_Dave]

Factory or Aftermarket?

I'll be running a set of big valve ported 781s I got a deal on.
My first set of BB heads.

http://lh5.ggpht.com/_aZniZlzG90Y/SmD1YB1kc9I/AAAAAAAADCw/g78LmiEkRGA/s912/SNC00044.jpg

http://lh5.ggpht.com/_aZniZlzG90Y/SmD1diGCETI/AAAAAAAADC4/97biZZKCxG4/s912/SNC00046.jpg

Dan

Dan, I'm running the same heads. 781 with porting. When you say large valve, what size are you talking about?

[Highway Star]

Iron GM here. #14022601 305cid heads. Really woke up my lazy smogger 350 for sure. I haven't pushed it past 6400 to see where it redlines yet...a little chicken to go much further with cast rotating assembly.

[Jeff]

I have 2 aluminum headed engines. Neither are actually installed and running :speechless:

[Seeb]

I'm good...1 of each here :)

[DougA]

Would like to have a set of aluminum heads for my 427 Elky,to lower the weight some,but I don't see many with a small combustion chamber like my 215's.I would like to keep my cr up in the high 11's where it is.Most aluminum heads I see are 113cc and up.My 215's are in the 104cc range.Is there a way to keep the cr up with an aluminum head with out changing my closed chamber pistons?

[Don_Lightfoot]

This is the kind of "argument" that is healthy. There are aluminum heads on my car which were there when I bought it nine years ago. Not really sure about any performance improvement, but they sure save a bunch of weight. I think they look cool as well.

[Johnny O]

Well, it is a mopar so that isn't saying much now is it? :biggrin:

:tongue::tongue:

[BlueSS454]

The iron headed 350 that's in my Cutlass performs fairly well for what it is. It's more or less a stock 350, with a little more cam in it. The heads are 441 castings. I've had the car running 14.60's on street tires with a 3.42 gear in it, it may be a tenth or 2 quicker now with the 3.73's in it. I'm not so sure alum, heads would make much of a difference on it. We're going to find out once I do the rear in the Cuda. The engine in that car is fairly well matched to the 350 in the Cutlass as far as compression, and cam are concerned. I believe the combustion chambers are comparible between the heads as well.

[LS_5]

I've got one of each set, too. My understanding it that once the compression and hp get high - above 11:1, or so, and maybe 500 hp, you need aluminum to get to the next level. Not sure why/how, personally. But I know when my 555 was done, there was never a discussion about which way to go. Aluminum was a given.

[jfkheat]

I have a set of the GM 077 aluminum heads that I'm thinking about putting on my engine this winter. My compression will drop to around 10 to 1 or maybe a little lower. Still trying to decide.
James