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What areLS3 Rectangle Port Cylinder Head to LS1 Cathedral Intake Adapters ?

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Old 05-21-2017, 05:24 PM
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Default What areLS3 Rectangle Port Cylinder Head to LS1 Cathedral Intake Adapters ?

Is it so we can bolt on LS3 Heads on our LS1 Motor?

I saw them on Everyone's favorite shopping size AtoZ.
Old 05-21-2017, 05:28 PM
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If you're using LS3 heads, why not use the LS3 intake manifold?
IF that's what these adapters do...
Old 05-21-2017, 11:30 PM
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Ls3 valves are too big for an ls1 bore.
Old 05-21-2017, 11:32 PM
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OOPS forgot that minor detail!
Old 05-22-2017, 06:48 AM
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The adapters are to bolt square port (LS3 style) intakes to cathedral port (LS1 style) heads. I haven't seen many people use them but most talk about them in reference to using LSA blowers on LS1 heads.



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