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Question about the LS1

This is a discussion on Question about the LS1 within the General Help forums, part of the LSx Technical Help Section category; Can you put LS6 heads on a LS1? There is some guy here in town that swears up and down ...

  1. #1
    Junior Member ls1transam312's Avatar
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    Question about the LS1

    Can you put LS6 heads on a LS1? There is some guy here in town that swears up and down that he has this done. I don't know if its possible or not that is why I am posting this.

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    O U 8 1 2 Spaz's Avatar
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    Quote Originally Posted by ls1transam312 View Post
    Can you put LS6 heads on a LS1? There is some guy here in town that swears up and down that he has this done. I don't know if its possible or not that is why I am posting this.
    you might want to post this in the tech section...

    the answer is yes...

  3. #3
    Member c5z28's Avatar
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    ls-1, ls-2, ls-6 all compatible parts.

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    cutting and welding mark21742's Avatar
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    the casting number on the Ls6 head is "243" it will be raised on the front corner of the passengerside head (rear corner of the driverside).

    yup bolts up the same, but flows better, has bigger, lighter valves than the Ls1 head

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    Ls6/1 valves are the same 2.00/1.55 size. The LS6 Vettes are the only cars that received the hollow stem valves. The LS1 GTO's did not. The 799 castings on the LS2's are the exact same casting....

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    LSwut tep98ws6's Avatar
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    currently what im doing to mine

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    Member jb3golf's Avatar
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    As well a nicely ported LS1 head will EASILY outflow a stock LS6 head. Something to think about. You could always uprgrade your stock valvetrain with better Valves, springs and retainers..........all depends on cost differences.

  8. #8
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
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    the LSx is considered a lineup of compatable engines, built on the GenIII SBC (or LS1) platform. Just about every GM engine from 2001 on will mix and match most bolt on parts...

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