Join Date: Dec 2012
Location: Gastonia, NC - Born & raised in Connecticut - 31 years
Mentioned: 1 Post(s)
Tagged: 1 Thread(s)
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The 066 cam is not much of a cam and was not used in the GTO for '67. It was used in full size cars and Firebird. HP rating with that cam was 325HP. In '67 there was a low compression gas regular fuel 400 rated at 255HP which came in the GTO as well. It used the "254" cam. Now I don't know what "base 400" means to you, but if you have a low compression base 400, you won't have a lot of get-up-and-go.
Your pipes shouldn't really be the problem with the 066 cam.