Fastburn Heads - aluminum vs. cast iron
03-24-2003, 10:54 AM
#1
Race Director
Thread Starter
Fastburn Heads - aluminum vs. cast iron
I am wondering, aside from the obvious weight advantage of the aluminum heads, what is the benefit from using an aluminum head instead of a similarly assembled iron head? :confused:
03-24-2003, 11:35 AM
#2
Team Owner
Re: Fastburn Heads - aluminum vs. cast iron (Jeff 6T9)
You need to read this
http://www.chevyhiperformance.com/techarticles/83858/
Their Conclusion:We still believe that iron heads have the ability to make more horsepower than aluminum heads, but we also think that the difference is probably less than an average of 5 lb-ft of torque. Given this, the power difference is slight enough that other variables can contribute as well. In this case, the two sets of heads were not identical enough to reveal the basic inherent advantage of the iron heads.
[Modified by Alwyn678, 11:37 AM 3/24/2003]
http://www.chevyhiperformance.com/techarticles/83858/
Their Conclusion:We still believe that iron heads have the ability to make more horsepower than aluminum heads, but we also think that the difference is probably less than an average of 5 lb-ft of torque. Given this, the power difference is slight enough that other variables can contribute as well. In this case, the two sets of heads were not identical enough to reveal the basic inherent advantage of the iron heads.
[Modified by Alwyn678, 11:37 AM 3/24/2003]
03-24-2003, 11:55 AM
#3
Burning Brakes
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Re: Fastburn Heads - aluminum vs. cast iron (Alwyn678)
Good article...
You can run higher compression with aluminium in the pump gas area without detonation.
The less weight = better handling.... more hp to weight ratio.
I think if cast iron was the hot set up the new generation hi performance engines would all use them...they don't. :flag
[Modified by 81ZZ4, 10:56 AM 3/24/2003]
You can run higher compression with aluminium in the pump gas area without detonation.
The less weight = better handling.... more hp to weight ratio.
I think if cast iron was the hot set up the new generation hi performance engines would all use them...they don't. :flag
[Modified by 81ZZ4, 10:56 AM 3/24/2003]
03-24-2003, 01:13 PM
#4
Race Director
Thread Starter
Re: Fastburn Heads - aluminum vs. cast iron (Alwyn678)
thanks - i hadn't thought about it that way.
does anybody have the fastburn (aluminum or iron) heads on their 'vette?
does anybody have the fastburn (aluminum or iron) heads on their 'vette?
03-24-2003, 06:25 PM
#5
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St. Jude Donor '09
Re: Fastburn Heads - aluminum vs. cast iron (81ZZ4)
The less weight = better handling.... more hp to weight ratio.
03-24-2003, 06:32 PM
#6
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Re: Fastburn Heads - aluminum vs. cast iron (Desertdawg)
The less weight = better handling.... more hp to weight ratio.
What more could you ask for.....Other than free.... :lol:
What more could you ask for.....Other than free.... :lol:
Hell I'd spend the $1500.00 just for the shiny polished sides of the heads and lettering on the AFR heads I am going to get. but I'm **** like that.
:D
03-24-2003, 10:58 PM
#7
Burning Brakes
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Re: Fastburn Heads - aluminum vs. cast iron (Cali,77,L-82)
...yes but less timing = less performance...less cylinder pressure...less torque...hell, less everything. :crazy:
