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Old 02-04-2014, 09:53 PM
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As did I with Landspeed heads, my current setup makes 447 through a a4
Old 02-05-2014, 12:23 AM
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You could go with the tfs 205s, they make about 11.5:1 compression have better ptv that stock heads, and flow great. Only downfall is you have to buy rockers for them to work.
Old 02-05-2014, 05:26 AM
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There's a set of AFR 205's in the classifieds right now for 1500 shipped...
Old 02-05-2014, 02:48 PM
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Originally Posted by dr_whigham
There's a set of AFR 205's in the classifieds right now for 1500 shipped...
Thanks Doc,
Actually there are a lot of 205's on there. Any reason why so many are getting rid of em?
Old 02-05-2014, 04:11 PM
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Originally Posted by ragtopz28
Thanks Doc,
Actually there are a lot of 205's on there. Any reason why so many are getting rid of em?
My guess is going larger. A lot of people switch setups yearly. Plus tax time is here.
Old 02-05-2014, 08:03 PM
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Originally Posted by ragtopz28
OK narrowed it down to #1 or #4. What ya'll think?? They are within $100 of each other.
Anyone know the expected CR on #1 with the ".010-.015" surface milling?
I have seen a lot of positive results from AI here in the dyno section, and will almost certainly go to them for head porting if/when I get a head & cam combo.

Why do you need the AI HCR's? It is my understanding that they are only beneficial when you can not achieve a high enough CR with milling and a thinner head gasket due to PTV clearances. Maybe that is the case with the CR you are looking for, and the cam you are running.
Old 02-05-2014, 10:21 PM
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Originally Posted by z-camaro

I have seen a lot of positive results from AI here in the dyno section, and will almost certainly go to them for head porting if/when I get a head & cam combo.

Why do you need the AI HCR's? It is my understanding that they are only beneficial when you can not achieve a high enough CR with milling and a thinner head gasket due to PTV clearances. Maybe that is the case with the CR you are looking for, and the cam you are running.
From what I've read, milling decreases flow, so if you can keep the same flow plus higher compression, its a win win. Not sure if that's accurate though
Old 02-10-2014, 04:39 PM
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Anybody else? I went with______heads and gained xx at track or xx hp with heads only.
Old 02-13-2014, 02:50 PM
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Nobody??
Old 02-13-2014, 04:21 PM
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I just purchased livernois motorsports stage 3 LS6 heads.
Old 02-13-2014, 04:38 PM
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Originally Posted by TXZ28LS1
I just purchased livernois motorsports stage 3 LS6 heads.
What performance gain do you think is between the stage 2 & 3? Looks like bigger valves and SS is the only diff.



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