doug thorley headers
I have no experience with the headers in question.
03-08 5.7 ports are 'square', 6.1 ports are 'D shape', as discussed. You can run 6.1 headers on a 5.7, but cannot run a 5.7 header flange on a 6.1 (significant port mismatch).
5.7 eagle heads (09+ 5.7) have the 6.1 exhaust port.
See below.
Wade
I have no experience with the headers in question.
03-08 5.7 ports are 'square', 6.1 ports are 'D shape', as discussed. You can run 6.1 headers on a 5.7, but cannot run a 5.7 header flange on a 6.1 (significant port mismatch).
5.7 eagle heads (09+ 5.7) have the 6.1 exhaust port.
See below.
Wade
