Dear Dr. G.
        As always you make good points.  I will look into increasing the size of the rear tires to get a bit better "ratio".  As to my affording the spare, it had more to do with timing.  I have poured so much dough into this puller because I fancy the idea of classic 66 Ford pulling a classic 66 Airstream.  The spare tire also included all the tire mounting apparatus which is one more reason why I can't get my dual exhaust pipes back to the rear.

I am also designing a Reese hitch that will not interfere with the telescoping rear step bumper.  I would like to retain it's functionality.  That should also answer Dan Weeks comment about why to dump exhaust forward of rear wheels.

Glad to hear that 4:10 rear is good.  Also glad to hear that dual exhaust don't cause problems with engine braking. 

Dr. G.  I sympathize with the gas mileage question.  At least this 66 Camper Special has three 60 gallon tanks so with the new tires I might get almost 700 miles per fillup . . . Gulp!
Bob

A far easier way to make minor changes in effective axle ratio is to
change tire sizes. An effective change from 4.10 to 3.90 takes only a
change in tire diameter from 30 to 31.5" probably changing from a 265 to
a 285 radial cross section. Two tires are a lot cheaper than a set of
gears, installed.

But for a guy who couldn't pay for a spare, isn't talking changing gears
or tires beyond financial reason?

Gerald J.

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