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oldskool · 01-06-2020, 10:55 PM

I think Norman Warling mentioned that Carroll was gonna try an iron head 428, in his GT car. They have a 10hp less factor than the alum heads. So, has there been any testing done to see how much power difference the alum E-heads make, if any ?

Do ya'll know of any other GT cars that have run an iron head 428 ?

01-06-2020, 10:55 PM	#4
oldskool VIP Member Join Date: Dec 2014 Location: The Land of Bayous, Boudin & Crawfish Posts: 1,668 Likes: 223 Liked 747 Times in 362 Posts	Re: Best Pontiac Powered Super Stockers I think Norman Warling mentioned that Carroll was gonna try an iron head 428, in his GT car. They have a 10hp less factor than the alum heads. So, has there been any testing done to see how much power difference the alum E-heads make, if any ? Do ya'll know of any other GT cars that have run an iron head 428 ?