Pontiac GTO 2004-2006 The Modern Goat

Ls6 Heads?

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Old 07-03-2007, 07:42 PM
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Default Ls6 Heads?

WILL THE LS6 HEADS FIT THE LS1 WITH NO MAJOR MODS??? WILL THEY GIVE MORE POWER THAN THE 241s THAT I HAVE??? I WANT TO GET A SET OF LS6 HEADS AND DO A STG 2 PORT AND POLISH, AND VALVE JOB. ANY HELP PLEASE??
Old 07-03-2007, 08:00 PM
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Yes, 243 castings will bolt right up. if this is for your GTO, you have basicly a LS6 in there already minus the heads (241) and cam.... thats all thats left of the LS1... your intake manifold is a LS6 one too. I'd spend a few extra $$ like I did and get them ported and polished. you will see around 20~30 RWHP gain depending on your other mods. I got 21RWHP out of mine.
Old 07-04-2007, 08:57 PM
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Yep, bolt right in. But really not worth the money if you don't do a cam also to take advantage of the better heads.
Old 07-06-2007, 10:38 PM
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Cool Guys Thanks For The Help And Yes I Am Getn Cam Soon But I Want A Lopy Cam But Not 2 Crazy. I Have An 85mm Intake/tb Combo That Are Not Insatlled Yet And An Sts Turbo Kit And Want The Ls6 Stg 2 Port Polish Heads And Cam To Match. So What Would You Think On The Cam???
Old 07-10-2007, 06:10 AM
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228/230 would be JUST right.
Old 07-10-2007, 06:40 PM
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Well I Went A Different Route Guys And Its In My Signature Of What I Got Now. But Thanks For All The Help




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