Duration @ .050
Intake 253
Exhaust 272

The attempt was to approximate the power she used to make without using 112 octane. Before the rebuild, she was running stock (ported) 502 iron heads, a stock hydraulic cam & a 25% overdriven 6-71 with Holley 750 DP's. With this setup, she could pull 720 HP @ 5600 RPM. I bought her this way & didn't care for pumping my own fuel from a 55 gallon drum. The last drum of 112 I bought was $3.65 gallon & she went through fuel like poop through a goose!
I also didn't like the 25% overdrive situation as the 6-71 was making way too much heat. I could have turned the boost down, but the power loss was significant. I feel the expense of the rebuild was worth it, if only to get a fresh motor & one that can live happily on 91 octane.