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F13 & Great heads, which size LSX?

Old 05-20-2004, 12:38 PM
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Sweet Cheeks
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Default F13 & Great heads, which size LSX?

I'm installing a F13 cam with heads that will match (Undecided) and I was wondering if I would see gains by going with a 90mm over the 78mm? If not I can get the 78mm for a great price right now. Thanks.
Old 05-20-2004, 12:43 PM
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I would also like to hear a responce to this. FM13 with AS 2.5 5.3l heads are going on my setup.

My guess is that a ported LS6 intake with a ported factory TB would be best but I would love to hear other peoples comments.
Old 05-20-2004, 01:56 PM
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Werd. Ha. TTT
Old 05-20-2004, 08:13 PM
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Hello can anyone here us? lol

From what I have found an unported 78mm LSX is only good for 5-10 HP over the LS6 intake but the kicker is the guy lost TQ.
Old 05-20-2004, 09:17 PM
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Hmm, really? I don't know. I want to be sure that I'm getting the right intake the first time before I just go buying one that sounds good. Ha. Anyone? Echo...echo...!
Old 05-20-2004, 10:05 PM
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personally i havent seen anything that warrents the cost of the lsx :shrug:, even on a h/c setup the ls6 works quite nicely.
Old 05-21-2004, 07:55 AM
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Maybe wait for the LS2 setup?? I am not sure yet either. I don't want to spend $800+ for 5hp and I am sure not to many others would either.
Old 05-21-2004, 10:14 AM
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I see. Well, I think I may just sit tight for now. Thanks for your help guys.


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