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heads are not to much it is the time and parts SSvalves roller springs seals studs valve locks spring cups titanimun retainers and they will need some machine work i like to cut the deck some new heads have a bad finsh and i like to cut down the 45 s narrow them up .some times the valve seats are not to good .

To answer your question about the 4/7 swap cam, No...it will not give you any more power, at least not anything measurable. Hi Pat, happy holidays! And hello SVRE, nice to see a new member, and a big block guy to boot!! Very cool. John

Thanks for the warm welcome fellas. I agree with the 4/7 swap. The only time I have seen good power from it was big cubic inch, large horsepower engines with ONE carb. Manifold distrubution means a lot there.http://www.svrehorsepower.com