I bought this cam from Eric Vogel, GTO board name. He said it was great for a stock block as he ran it without a lifter bore brace. Skip found this information on the cam.
UD lobes? only group I found with a 309 duration
NR100 309 280 0.4507
NR103 310 280 0.4271
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4.
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