The dyno test I had done on my Boston Bob slightly(mild cam and slight
porting if memory serves) modified engine done last May on a Mustang dyno
in Omaha yielded  85.2 bhp@4750  at rear wheels and 105.7 ft/lb. of torque
at 3000.   As best I can interpolate the computer graph, I had 50 hp at
2500 and still had close to 80 hp at 5500rpm.  Torque at 2500 was right at
100 ft/lbs. and climbed to the max at 3k and still had 100 ft. lbs. at 4300
before gradually tapering to 75ft.lbs. at 5500 rpm.horsepower at 50 mph(for
whatever that's worth )was 16.00, but I have a longer legged 4.57 r/p and a
.77 4th. The tech ran the motor(once warmed up) to 5800rpms repeatedly as
we were setting the Haltech to run slightly rich in the upper rpm
ranges.   Yes, I was holding my breath during those runs!  Temp was in the
mid 80's and major industrial fans were necessary to keep the motor
cool.  I have gotten 20 mpg on the road when the roof rack is off  and I
don't have boats on top of it going 65-70 mph but remember, this motor only
does 3400 rpm at 70 mph..  This  90 GL weighs 4000 lbs with the AC and PS
removed.  Sorry folks, but I'm out of dtate.  you can do your own 60%
calculations if need be.

Max