Altus Racing and ChevySpeed - Heads-aluminum or cast iron?

Bowties4me Senior Member Offline Chevy Speed Posts: 276 Altus Gender:	Heads-aluminum or cast iron? 08/16/06 at 22:04:03 Hey you guys Tell me which are better in certain applications. I know that the aluminum heads dissipate heat better but are they as durable as cast iron? Are they easier to port? From looking thru Jegs and other catalogs the good cast heads are almost as high as some of the alloy ones. Monte
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Chris Smith

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Re: Heads-aluminum or cast iron?
Reply #1 - 08/16/06 at 22:08:10

As cheap as aluminum heads are now days I wouldn't build another Small Block without them. They are easy to repair and are very durable.and the weight difference is huge. Also easier to port. Even if you had a cast set of heads you could repair, your better off going with aluminum. Better bang per buck.

In my opinion.

Chris

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Jared Black God Member Offline Chevy Speed Posts: 611 Arcadia, OK Gender:	Re: Heads-aluminum or cast iron? Reply #2 - 08/16/06 at 22:10:37 That's one upgrade I would like to make as soon as I paint the Nova. Aluminum heads w/ roller rockers. What cc would you recommend, Chris? JB
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Chris Smith Altus Racing Administrator Offline Chevy Speed Posts: 1441 Altus, OK Gender:	Re: Heads-aluminum or cast iron? Reply #3 - 08/16/06 at 22:15:25 On your motor I would go with 64cc Chris
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robztrux Global Moderator Offline Chevy Speed Posts: 675 Altus,OK Gender:	Re: Heads-aluminum or cast iron? Reply #4 - 08/16/06 at 22:17:17 I'll sell you mine Monte
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Bowties4me Senior Member Offline Chevy Speed Posts: 276 Altus Gender:	Re: Heads-aluminum or cast iron? Reply #5 - 08/16/06 at 22:28:33 Rob my car is slow enough!
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robztrux Global Moderator Offline Chevy Speed Posts: 675 Altus,OK Gender:	Re: Heads-aluminum or cast iron? Reply #6 - 08/16/06 at 22:30:48 we can epoxy them up Ill take good care of you make sure you get some lube though
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Jared Black God Member Offline Chevy Speed Posts: 611 Arcadia, OK Gender:	Re: Heads-aluminum or cast iron? Reply #7 - 08/16/06 at 22:32:20 robztrux wrote on 08/16/06 at 22:30:48: Ill take good care of you make sure you get some lube though I'm not going to touch that one-- just too easy. haha
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robztrux Global Moderator Offline Chevy Speed Posts: 675 Altus,OK Gender:	Re: Heads-aluminum or cast iron? Reply #8 - 08/16/06 at 22:34:36 he knows I was going to price them at 1200.00
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Bowties4me Senior Member Offline Chevy Speed Posts: 276 Altus Gender:	Re: Heads-aluminum or cast iron? Reply #9 - 08/16/06 at 22:37:40 I don't understand why anyone wouldn't spend the extra three or four hundred bucks for the alloy ones. How can the manufacturers expect anybody to pay so much for the cast heads. Are the alloys as strong at the rocker arm studs?
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Chris Smith Altus Racing Administrator Offline Chevy Speed Posts: 1441 Altus, OK Gender:	Re: Heads-aluminum or cast iron? Reply #10 - 08/16/06 at 22:39:30 they are very strong. Most don't. Chris
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A442DUDE

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Re: Heads-aluminum or cast iron?
Reply #11 - 08/17/06 at 11:55:25

Chris Smith wrote on 08/16/06 at 22:08:10:

As cheap as aluminum heads are now days I wouldn't build another Small Block without them. They are easy to repair and are very durable.and the weight difference is huge. Also easier to port. Even if you had a cast set of heads you could repair, your better off going with aluminum. Better bang per buck.

In my opinion.

Chris

I AGREE TOTALLY W/CHRIS ALSO YOU CAN RUN HIGHER COMPRESSION WITH ALUM WITH LESS CHANCE OF DETONATION

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Jims78 Junior Member Offline AltusRacing Posts: 80	Re: Heads-aluminum or cast iron? Reply #12 - 08/17/06 at 12:12:07 A few issues back Car Craft tackled this subject....they ran the exact same pair of heads except for one being cast iron and the others being aluminum.....d@mn near no difference on the dyno between them but the aluminum are lighter.....I don't think they ran much over 10.5 to 1 compression in that motor....
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Jared Black God Member Offline Chevy Speed Posts: 611 Arcadia, OK Gender:	Re: Heads-aluminum or cast iron? Reply #13 - 08/17/06 at 12:37:00 How much weight savings do you think you might have on a sbc? JB
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robztrux Global Moderator Offline Chevy Speed Posts: 675 Altus,OK Gender:	Re: Heads-aluminum or cast iron? Reply #14 - 08/17/06 at 13:12:52 Did they do any testing at the track?
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