Quote:
Originally Posted by 68shortwide
i understand the higher the compression, the higher the octane fuel you have to run
|
You need to really look at more than just Static compression.
Dynamic compression is more important. 8.5ish is about the most I like to see with 91 octane. This is dependent on static compression + Intake valve closing point (.006 in a hyd cam application).
Keep in mind that Cyl fill and volumetric efficiency as RPM goes up change things too.
Quote:
Originally Posted by BR3W CITY
Car heads aren't 100% plug and play tho,
|
If it is a stock 6.0 with cathedral heads, LS6 heads are a direct replacement and can use the truck manifold. These will gain flow and provide more compression.
Quote:
Originally Posted by tony2tall
DBC instead to make life easier
|
IMO DBC makes a lot of things easier.
What ever heads you go with, I would consider a custom cam to maximize dynamic compression. It will help in low end TQ production which is a big thing in a heavy truck.