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Rich Biebel · 07-27-2009, 05:23 AM

I didn't want to be the first one to say how I made them the right CC's......I angle milled the iron open chamber "990 heads......zero to .125" than flat milled them the rest of the way. corrected the intake side and faced the head bolt bosses to make them for an LS-6....I did not realize the 401 heads were being used for that engine as well.....

07-27-2009, 05:23 AM	#9
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: 396/375 Replacement cyl head I didn't want to be the first one to say how I made them the right CC's......I angle milled the iron open chamber "990 heads......zero to .125" than flat milled them the rest of the way. corrected the intake side and faced the head bolt bosses to make them for an LS-6....I did not realize the 401 heads were being used for that engine as well..... __________________ Rich Biebel S/C 1479 Stock 147R