Originally Posted by automotive breath
Always listen to your machinist over some nobody on the internet..... He is likely fixing some of the obstructions in the vortec heads with his valve job...... Iíll post some pictures of a set Iím porting now.
He says most of his flow 238~242 after the valve job, also says he can get 10~15 more but it's not worth the trouble. So I think we're still
on the same page. Apparently, you and I think nothing about taking a die grinder to a perfectly good set of heads,
, but the average Joe can really mess them up badly without some teaching and/or experience, that was the reason I considered it bad advice,