** NEW ** Trick Flow LA cylinder heads introduced at SEMA

The W2 is a very good head, after porting. The stock sets i've checked on my flowbench flow 260 cfm at .450 lift then fall on their face because of speed issues. So porting is needed to get them right, plus like it says above EXPENSIVE rockers, limited intake choices and intakes that need porting work, special headers or pain in the butt adapters, crack prone on some part numbers, (mine cracked by the bolt holes and leaked water) plus the FACT they are quite heavy.