Small block mileage

More power, less mileage?

I drive 24 miles to work without a stop sign (live in the middle of nowhere speed limit 60). But there is definitely some spirited driving in-between. I bet with a Edelbrock 600 and staying out of it I could get 18-19.

Hummm, your 5.9 works on 87. Mine likes the 89.

I had to back the timing off (I had it at 15/35) it would ping. I'm sure it would take more timing with higher octane but it rips on 87 for what it is.