gt/class

CamCam · 06-21-2011, 07:19 PM

Afternoon all, i'm just currious as which gt class would a 71 454/425 be factored? And is this a good combo to put fourth the effort and time? And by the way it would be with the factory steel heads not the aluminum version. As i have the block and a set of the 188 head castings. I also have a set of the 291 castings that would make a 427/425. Which would be the best?

Thanks.

tj310 · 06-22-2011, 03:04 PM

71 454 425 with 188 castings rerated to 424 HP with an auto trans. All this info is available on the nhra website , just click on the icon top of this page...Thanx Trevor

06-21-2011, 07:19 PM	#1
CamCam Junior Member Join Date: Oct 2008 Posts: 52 Likes: 1 Liked 2 Times in 2 Posts	gt/class Afternoon all, i'm just currious as which gt class would a 71 454/425 be factored? And is this a good combo to put fourth the effort and time? And by the way it would be with the factory steel heads not the aluminum version. As i have the block and a set of the 188 head castings. I also have a set of the 291 castings that would make a 427/425. Which would be the best? Thanks.

06-22-2011, 03:04 PM	#2
tj310 Member Join Date: Sep 2009 Location: Dresden On. Canada Posts: 460 Likes: 0 Liked 0 Times in 0 Posts	Re: gt/class 71 454 425 with 188 castings rerated to 424 HP with an auto trans. All this info is available on the nhra website , just click on the icon top of this page...Thanx Trevor