Got it. So you are taking inot consideration, taxi, decent, pattern, etc. Makes sense. I was thinking that was a little low as an in flight fuel burn because I use 10 GPH for the Tiger, which also has an O-360 Lyc.
I'd block 17.5gph running 2 of them 62% power and leaned (climbed at 80%). I was turbo so altitude was irrelevant but it got me an IAS of 150 @4500'.
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