The 302 heads I have were gasket matched and ported. I guess my question is, if the edelbrock air gap/M1 dual plane have runners sized to fit the 340/360 heads, what will it do with the 302 heads? Just not perform as well I guess?[
I see rumbles on this thread I'll leave it to him this is not my area of experience, I would think you would want to open up your intake port to a 340 gasket match size if it was me.
