396/375 Alum Vs Iron Heads....

[SSDiv6]

Originally Posted by Ed OBrien

Maybe after they pour a few more heads things might slow down.What do you want to do about lowering the index for the cars that have not had the advantage or gain very little with lifters and valve springs that will let them wind to 8000 rpm ? What about all the cars that have not gotten a new and bigger cam than they came with ? Have a nice day

Ed...the lifters and valve springs are available to any make of car. They can pour all the big block they want, the legal accepted heads make power without the use of acid.