Scored Offy dual quad intake for my 392 WEDGE project!
I have the manifold for the "1966 and later" 273 so the bolt holes are correct for 360 heads. The sealing surface around the ports on the manifold- may not be sufficient when bolting to a 340/360 head because the ports on the bigger LA motor are MUCH larger than a 273 and the offy manifold. I guess its like a bolting a standard 440 manifold onto some ported max wedge heads. I put a blue Felpro 360 gasket up to the port surface of the Offy and theres very little sealing surface- aluminum on the top of the runners/ports. I can try a 318 gasket after i buy some and see what that looks like. Probably same issue but in a different area.
I have the manifold for the "1966 and later" 273 so the bolt holes are correct for 360 heads. The sealing surface around the ports on the manifold- may not be sufficient when bolting to a 340/360 head because the ports on the bigger LA motor are MUCH larger than a 273 and the offy manifold. I guess its like a bolting a standard 440 manifold onto some ported max wedge heads. I put a blue Felpro 360 gasket up to the port surface of the Offy and theres very little sealing surface- aluminum on the top of the runners/ports. I can try a 318 gasket after i buy some and see what that looks like. Probably same issue but in a different area.