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Author Topic: is this a lemans 1 head? im a bit stumped  (Read 157 times)

Offline amamet

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is this a lemans 1 head? im a bit stumped
« on: November 13, 2025, 03:51:44 PM »
The numbers dont correspond to lemans heads numbers but the manifold takes 6mm bolts. whatcha think?  found this in stash of old parts I have
thx
allen









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Online PeteS

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Re: is this a lemans 1 head? im a bit stumped
« Reply #1 on: November 13, 2025, 04:37:43 PM »
It appears to be a LM1 head. How deep is the squish band. It appears to be pretty shallow. Many think .040” is minimum height.

Pete
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Online Frenchfrog

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Re: is this a lemans 1 head? im a bit stumped
« Reply #2 on: November 13, 2025, 05:07:09 PM »
To confirm you just need to check the valve sizes....certainly looks LM though
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Offline amamet

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Re: is this a lemans 1 head? im a bit stumped
« Reply #3 on: November 13, 2025, 05:10:34 PM »
its bare, no valves.  what else can I measure like it is?
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Online PeteS

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Re: is this a lemans 1 head? im a bit stumped
« Reply #4 on: November 13, 2025, 05:23:38 PM »
Quote from: amamet on November 13, 2025, 05:10:34 PM
its bare, no valves.  what else can I measure like it is?

The diameter of the valve seats. Should be slightly over 44 and 37 mm.

Pete
« Last Edit: November 13, 2025, 05:27:46 PM by PeteS »
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Offline Turin

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Re: is this a lemans 1 head? im a bit stumped
« Reply #5 on: November 13, 2025, 08:16:17 PM »
Without the valves and a caliper it's hard to check. the 6mm intake bolts holes indicate lemans heads,

Here are some comparison shots I took










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