NolimitZ32 wrote:What aftermarket heads are you referring to? DOHC engines for the most part aren't supported in the aftermarket like OHVs, you don't just go out and buy aftermarket heads for a VG30DE/DETT. Also, the factory heads on these engines are amazingly good. Lastly the cams are built to be direct fit into the factory heads, if your heads require machining (beyond a little clean up at worst) to make these cams work then there is something wrong with your heads, very wrong.
The heads I'm looking at are from Z1. I suppose they're really not aftermarket, but reworked factory cores. I spoke to Mike from EPR and he said that I would have to have head work for the cams to fit. If anything, could anyone recommend a place to have porting an polishing done. I keep reading about using a dremel and doing it myself, but I am not going down that route.