Here is an opinion that should help you decide if considering.Copied from a thread on speedtalk.
http://speedtalk.com/forum/viewtopic...hlight=procomp
Originally Posted by cboggs
I have some experience with them, ..
In general the castings are weak so I wouldn't port on them too much or put a huge valve spring on them.
If you keep the cam small for a roller and avoid the 360lb seat pressure some cams like you should be OK.
Take them to a good machine shop and have the valve guide clearance
checked and have the valve seats cut. Do a light clean up of the casting
blend under the seats, .. and go have fun.
The one I flowed before trying to port did not flow the advertised numbers, .. but these days, ..
what head really does. It should do just fine for your application.
It's an OK head for the price, .. but like any inexpensive race part, .. the economics are short term, ..
meaning in general the lower quality that goes with the lower price in general means
the part will not perform well or as long as the quality part, .. and could cost more in the long term.
Should be fun in a dragster, ..
Curtis
Originally Posted by cboggs
Originally Posted by crazycuda
I haven't had a chance to see a set of these yet. But from what I am understanding the heads would be good on a hot street car, maby mild bracket racer?
I don't think so, ..
Curtis