I have two sets of these heads. They are good quality castings. A basic copy of a RAIV is what I would call them. The chambers suck. The valve positions suck for a big bore, big valve. Their ability to increase CSA sucks. The LS3 heads on my GTO KILL compared to an out of the box Ehead.
Marcella doing the work to Leech's heads and delivering their numbers speak TON's to their ability. They have polished a turd to the MAX, well done guys. I can only assume max welding and intake ports encroaching into valve covers?
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