my 82 fc omly goes 55 mph at 2700 rpms -- Buzzy's Question and Answer Forum

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Subject: my 82 fc omly goes 55 mph at 2700 rpms

Author:
Gene Mehr (slow rider)

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Date Posted: 08/ 5/ 08, 8:06am

I have a 82 fc 3208 nc for about 2 years When I bout it and test drove it, seemed slow 55 mph at 2800 rpms. I ask seller what cruising speed they travelled at and said 60 to 65 mph. We want on a trip this spring 5hrs into trip after pulling a pass tranny shifted into drive and locked up really good and was runing at 2650 rpms 60 mph hour. for the rest of day worked great. ON way home back to old runing speeds. took to trany shop for service and test. Road test with pressure gauge 135 psi at full trottle 125 psi at part throttle. Trans goes into lockup in 3rd 4rth. The shop said looks good. Sugested to rebuild for 3500.00 could not garrentee that my rebuild would make my bird faster than 55mph and i was imagining things when the bus was going 60mph at 2650 rpms. Tire size 11r 22.5 axle ratio 5.29 Motor 3208 na Trany allison mt 643.HELP

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[> Subject: Re: my 82 fc omly goes 55 mph at 2700 rpms

Author:
Don
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Date Posted: 08/ 6/ 08, 4:32pm

Governed speed limmit should be 64-ish. Is your tack and and speedometer accurate? A GPS can give you accurate speed as a reality check. Your tack should be steady as you modulate the throttle somewhat, to prove that the transmission is truly in lock-up. Your transmission has a throttle position sensing cable that assists the transmition as far as shift points and I think lock-up; make sure this is in adjustment.

Your 82 is pretty heavy for a 3208NA, under certain load conditions 55 miles per hour will be as good as it gets, but if your at 2700 RPM and locked up, that should be about 61 mph. Consider changing the transmition fluid if you've never done that.

Don

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