Quote:
Originally Posted by 84ta406
Good to know. I knew theyre off a cup motor but wasnt sure when the SB2 heads started. Theyre -10 heads from what I remember.
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yep the cup ones should be a raised runner one so they are not just reg -10s they are more like the 10x or 10ri heads..a worked over none raised runner -10 can get 330cfm or so with alot of work..moving pinch area,welding and raising floors an such.