Do they make good power and are they worth the money?
I may go with the trick flow just because they are a little cheaper. Plus it seems that a lot of you guys run these and make good power
I have the first generation TFS TW heads with pedestal rockers. I think they should still make them that way. Anyway, I did end up with a failed valve guide shortly after I installed them. They were experimenting with cast iron guides back then. I sent them back to TFS and they sent me a brand new set of heads with bronze guides for free. Never had a problem since. I was running a FMS Cobra intake and switched to a TFS unit late last year and the new combo is great!
You have to run hardened pushrods with guideplates (stud mounted rockers). I got the TFS heads because of three major factors. First was price. They're definitely cheaper than AFR heads. Second was the ability to run a 2.02 intake valve. Try that with some AFR's (185cc model. 165cc heads run a 1.94 intake valve) and you'll end up with some severe piston to valve clearance issues. TFS gets away with it because they use canted valves instead of inline like the other manufacturers (Edelbrock, FRPP, AFR, etc.). The third was mainly just availability. Of the places that actually had the AFR heads in stock, some of which I had never heard of, I just didn't feel comfortable ordering them. I went on Summit Racing's website and ordered a pair. No BSing around, no searching for the best deal on the overpriced AFR heads, just click and wait a couple days for them to arrive.
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