Greeting Forum Members,

The intake manifold from my 1973 450sl is not sealing my rebuilt heads from a 1975 450sl. The 1975 heads have a channnel runnning just below the intake ports that the 1973 heads don't have. I installed the gasket from the 1973 gasket kit. I'm thinking that I should be using the different designed 1975 gasket. Are the1973 & 1975 intake manifolds different?
Thanks in advance for any help with this.

Knarf

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72 350SL #69
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