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Old 11-01-2002, 12:20 PM
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Post Identifing 18 degree heads

I just got a set of used alum. SBC heads. They are the GM NASCAR heads from Scroogin-Dickey. All I show them selling In the GM NASCAR are 18 degree. Is there a way for me to tell for sure? I dont off hand see and casting numbers. Can I measure the angle of the intake side of them? How?


Thanks once again!




[ November 01, 2002: Message edited by: Maverick ]</p>

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Old 11-01-2002, 01:40 PM
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If these are the newer type Cup SBC heads they are the SB2 or SB2.2 (newer, better casting) heads. I believe these heads have the highest CFM ratings for any SBC heads available currently. They also have very small combustion chambers (35cc I believe) To use these heads however, you'll need a jessel rocker system, special pistons, headers, etc. If you use these heads to their max potential (750 to 800 horsepower), you'll also need a BowTie block or other after market racing block, a 4340 steel crank (Callies for example), good rods (Oliver or Dyers for example), titanium valves (Dale West for example), etc. if you want it to last very long. The valve angle on these heads is somewhere around 14 degrees. The Chevy Cup guys did use 18 degree heads up until the SB2 was developed. Many dirt late model engine builders buy these heads from Cup teams after 1 race and use them for their engines, but I have yet to hear of anyone using these heads on the street.
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