Can I use 67 273 heads on my 69 318?

nm9stheham said

Thanks TMM.. I was not clear on if the SBM's had the 675 open chamber heads by '67... sound like not.

Which means that for sure the OP needs to use a .039" or thicker head gasket... the .028" thick head gaskets would be getting too tight on piston clearance to the closed chamber heads. Stand Felpro kit head gaskets at .050" thick would work and be cheap.

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As long as you measure the clearance the op should be ok. I used the Mopar Performance version of the Mr Gasket1121G gaskets with a .028 compressed thickness on my 273 with the Egge 10/.5 pistons. I had close to .100 clearance and the pistons are out of the hole. The 318 slugs in the op's 318 are close to zero deck but still below. Dang, I should have taken a photo of the exposed dome.