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Guys I have always thought conventional meant CONVENTIONAL valve angle.
Since when did a 15* small block ford head become conventional??
 

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That "conventional" word is a royal pain in the ass. I think that the 15* Victor is conventional because it is still an inline head, I also think the Chevy heads listed above are too. As stated above, the "factory" valve angle heads generally get a break over the other "conventional" heads and they should. The twisted wedge, Yates and SB2's are not conventional.

. . . just my 2 cents
 

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That "conventional" word is a royal pain in the ass. I think that the 15* Victor is conventional because it is still an inline head, I also think the Chevy heads listed above are too. As stated above, the "factory" valve angle heads generally get a break over the other "conventional" heads and they should. The twisted wedge, Yates and SB2's are not conventional.

. . . just my 2 cents
totally agree
 

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Most sanctioning bodies around here give Twisted Wedge heads a pass because they aren't any better than a top shelf inline head. Regarding Fords, the Yates/Cleveland type stuff is what is usually considered an "unconventional" head.
 

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Most sanctioning bodies around here give Twisted Wedge heads a pass because they aren't any better than a top shelf inline head. Regarding Fords, the Yates/Cleveland type stuff is what is usually considered an "unconventional" head.
I know, same here.
I just think its a bogus argument, valve angle leaves alot on the table as far as taking or adding weight. I just like to hear peoples reasoning for saying a 20* head is at such a disadvantage. You can go back to the old Holley Systemax heads that were I believe 15* or 18* heads and yet they cant hold a candle to a max effort H-P or Kuntz Track1
 

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Agree with Charles. Conventional is determined by valve layout BUT +/- 2-3 degrees from factory spec is also usually stipulated for legality.
 

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i agree on the valve angle change adding or subtracting weight but this head being an inline head makes it a conventional head.....IMO
 
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