Thread: head upgrade disappointment

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Originally Posted by Dave Severson

Nothing wrong with the castings from what I've seen of them! Local race engine shop here uses the Pro Comp castings, buys them bare, does the machine work and installs first rate components in them. Some of his sets are making some very strong power numbers!!!! One member on here has a set, ask Roger how his perform!

Also, from what Sehr has said about these castings, the flow rates are about as close to advertised as most of the other aluminum heads in "as cast" condition.... A bit of time on the flow bench will improve any head!!!!!

Thanks Dave that has reassured me,will try some of the ideas people have mentioned! Im also going to re jet my holley now with the new heads.
Might even try a 650 double pumper which is sitting on a shelf.
Thanks again