Quote:

It's too early to find out about the truck heads. I wish I knew.

I have a feeling the hellcat heads are identical also. They said they're made from a completely different alloy also.

09 and up 5.7 (eagle) use the same cover as the 6.4. The area that seals against the spark plug tube is recessed, because the plug tubes are shorter.



So can the 6.4 heads work on a 5.7 bore? Even with say a .020" overbore? If so, I am going to pull the trigger on those heads that sixpackgut mentioned...wondering if they are bare or complete heads for that price also.