CLASS RACER FORUM - View Single Post

REGGIE WINKLES · 11-05-2015, 11:57 AM

Adger, I would go with the 76 cc- 624 casting all the way. If not mistaken I think the 450 & 556 castings have the 1.72 intake valve. I have seen a lot of the 624 heads used. Don't know anything about the 703 head.

11-05-2015, 11:57 AM	#3
REGGIE WINKLES Member Join Date: Jun 2007 Location: St. Augustine, Fla. Posts: 229 Likes: 569 Liked 39 Times in 9 Posts	Re: Head selection Adger, I would go with the 76 cc- 624 casting all the way. If not mistaken I think the 450 & 556 castings have the 1.72 intake valve. I have seen a lot of the 624 heads used. Don't know anything about the 703 head. __________________ Reggie Winkles 2650/Stock