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

dahkahuna · 12-06-2012, 12:38 AM

OK, I have 2 differint opinions now 1 for the 1.84 valve and 3/8 stems and another with 1.72 valve and 3/8 stems . Who is correct?

12-06-2012, 12:38 AM	#5
dahkahuna Member Join Date: Jul 2006 Location: san dimas , calif Posts: 128 Likes: 0 Liked 5 Times in 3 Posts	Re: 427-425hp w/GM 401 heads OK, I have 2 differint opinions now 1 for the 1.84 valve and 3/8 stems and another with 1.72 valve and 3/8 stems . Who is correct?