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any one put 317's on a lq4 that had iron heads?

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Old 02-20-2012, 03:20 PM
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Default any one put 317's on a lq4 that had iron heads?

I just got done talking to a junkyard guy and he said that you cant put aluminum heads on a 6.0 with iron heads because the the way they bolted up was different, different head gasket, head bolts etc. is he full of **** or does he know what he is talking about. I know the crank spacer is different in these year engines so Im thinking he knows what he is talking about... anybody done this and know one way or another?
Old 02-21-2012, 07:50 AM
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Old 02-21-2012, 10:01 AM
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I have done this before, the 317 head is the twin to the iron head except for it being aluminum. My only disappointment was that I couldn't feel any power increase which proves that they are identical.
Old 02-21-2012, 11:16 AM
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Yes they are interchangable and flow numbers are very similar. The biggest thing you will do is loose 50-75 lbs off the front of the car.
Old 02-21-2012, 11:23 AM
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Yes, will bolt on. I used one of the iron head, thicker crank flange 6.0 for a build long time ago. But i bolted on 243 heads. Any ls heads will bolt on like any other ls
Old 02-22-2012, 09:10 AM
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thanks for all the info!



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