Iron LT1 head Vs Aluminum LT1 head
#1
Iron LT1 head Vs Aluminum LT1 head
Which is better flowing head.
Read that the iron head has 5% better flow.
http://www.automotiverebuilder.com/ar/ar99928.htm
Read that the iron head has 5% better flow.
http://www.automotiverebuilder.com/ar/ar99928.htm
#5
I think this is a matter of personal preference. I've seen many a argument about this, iron or aluminum. It seems you get better flow with iron heads but more weight reduction with the aluminum. Its the ketchup or mustard battle. IMO, go with the aluminum.
#6
The original ? refers to flow, and flow alone. While it is agreed (?), that in regards to oem virgin castings, the iron has the flow advantage. However, to be fair, I believe the answer/discussion should also include flow with the full potential of the head realized, IOW, ported.
To uncomplicate the issue, leave the weight or durability variable out of the discussion. This way, the answer would not be a matter of personal preference. Now for the links giving the flow advantage to iron. Or was the above reply referring strictly to oem virgin casting flow #s?
To uncomplicate the issue, leave the weight or durability variable out of the discussion. This way, the answer would not be a matter of personal preference. Now for the links giving the flow advantage to iron. Or was the above reply referring strictly to oem virgin casting flow #s?
Last edited by arnie; 12-26-2003 at 07:37 AM.
#10
Originally posted by 96 WS6
Umm people, aluminum heads are the ones that are sought after. They disperse heat way better than iron.
Umm people, aluminum heads are the ones that are sought after. They disperse heat way better than iron.
#11
Originally posted by 96 WS6
...aluminum heads are the ones that are sought after...
...aluminum heads are the ones that are sought after...
Originally posted by BlueCamaroZ28
How about the combustion chamber size?
How about the combustion chamber size?
It would be great, if we could stick to the topic/question. Iron does have larger C C, precise specs not handy, but the relevancy here, as I perceive it, is not the size as it relates to CR, but the flow influence (unshrouding) any additional area available, surrounding the valves generates, plus any flow influence/difference, in general, the different combustion chamber shape causes. Although an all around different shaped chamber could be considered an intangible, cuz it may have little affect on measured flow bench #s, but influence flame travel, which could have an effect on dyno #s.
Last edited by arnie; 12-26-2003 at 03:46 PM.
#12
The iron LT1 heads flow better than the aluminum F-body LT1 heads straight out of the box. The iron heads are the same as the Corvette aluminum LT1 heads, but the F-body aluminum LT1 heads are different(you know, the Corvette can't be slower than the Camaro). As for which head is better, the iron will hold the heat better which will make more power at the top end. Both heads can be ported to flow the same so that is a moot point. It comes down to preference if you want to save weight, go with the aluminum.
#14
Originally posted by Jeff H
The iron heads are the same as the Corvette aluminum LT1 heads, but the F-body aluminum LT1 heads are different(you know, the Corvette can't be slower than the Camaro).
The iron heads are the same as the Corvette aluminum LT1 heads, but the F-body aluminum LT1 heads are different(you know, the Corvette can't be slower than the Camaro).
The Iron Heads will flow better than the aluminum straight out of the box.
#15
Ive always wondered why the ironheaded LT1 makes less power. Im guessing the cam profile is designed for more low end torque to get B-body cars off the line. or maybe a more restricted exhaust?
Impala SS's usually dyno 210-225rwhp
Auto LT1 f-bodys usually dyno in the 230-240rwhp range.
Impala SS's usually dyno 210-225rwhp
Auto LT1 f-bodys usually dyno in the 230-240rwhp range.