I've managed to average about 15/mpg with my 230 and the 3 on the ree. But...there is always a but, I did recent;y find a complete OD tranny from a 61 Bel-Air that I've been looking at, and with that hope to improve the MPG up to around 19 steadily. Now if I can remember where I put that sack of "extra" money I had, I'll be in business.
Tramp

dj durant

1964 Chevrolet C-10 Pickup Truck
In the Stovebolt Gallery
More pix on Flickr