Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: AFR's & Headers (I know)
Those were questions I and others on this site asked when going to AFR 's.
I had a set of hooker comps 2451 on my sbc stock heads, World square port heads and now on my AFR 195's . I fretted to no end and searched as many on this site did for the same answer. I went to the Salle site and did not find much help either.
Looking at the exhaust ports on this head, the opening appears to be in center line with bolt line. Thus indicating the raised port is not an issue with headers. But if you compare the raised port heads on GM Vortec, the picture I saw, showed the port higher on the top side of bolt center line. I think that some time people think all heads are constructed same but not in the case with AFR.
I finally talked to Jason Dow, of AFR. He stated the my 1 5/8 round port Hooker 2451 will seal. Their port is not truly round but D oval. Thus raised in the center of the oval prolly .200 ths.
I Installed the heads and used Ultra seal 5907 gaskets and no problems at all. I later went to the TriY 376-1 coated because Hooker 2451 has a design problem that allows the driver side collector to hang down lower than right and being that my Z had 4 in ground clearance, I could skin every speed bump in west Texas along with some armadillos.
I can only speak of the combination. Do a search on this site and you will find many that have been down the road you are on .
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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