Which Exhaust Manifolds?

Uhcoog1 said

.....Anyone know if there were changes made to the Exhaust manifolds for the 09 Eagle heads (i.e. better flowing)?

Click to expand...

The 09+ 'Eagle' engines do have revised exhaust manifolds. The exhaust port shape was changed to a D shape like the 6.1 uses. I believe flow/performance was increased over the 08 down versions as well.

Somebody on here used the 09 manifolds in thier a-body... Not sure who or what manifolds...