CLASS RACER FORUM - View Single Post - 427-425hp w/GM 401 heads

RULER · 12-06-2012, 05:19 AM

The iron head uses the 1.72 exh. and the 401 alum. uses the 1.84 exh and also you run at 435hp. with the alum. head 425hp with the iron head. Thanks

12-06-2012, 05:19 AM	#7
RULER Member Join Date: Jan 2006 Posts: 221 Likes: 15 Liked 58 Times in 18 Posts	Re: 427-425hp w/GM 401 heads The iron head uses the 1.72 exh. and the 401 alum. uses the 1.84 exh and also you run at 435hp. with the alum. head 425hp with the iron head. Thanks