With the Trick Flow TW heads, what does it mean when it says o-ring grooved? I found a set at a good price that I'm thinking about buying to go with my TFS intake and stage 1 cam instead of my Powerheads but I just want to make sure the o-ring grooved ones are ok to use. Thanks.
They would be better, the o ringed heads are for high compression - a blower or turbo. So if you ever plan to get a power adder, you'll have perfect heads. I'm not too sure where or what kind of head gaskets you'd need though.
trickflow sells a whole engine gasket kit for about 120 bucks if I remember correctly and they have fel-pro gaskets in it made for the 0-ring grove. I cannot remember the part number off the top of my head but summit racing has them.
Kevin