Re: [AMC-list] 196/t96/od gear ratios

[Ken Ames <ameskg@xxxxxxxxx>]

I know my 86 Eagle with 5 speed seemed under-powered highway cruising at
18-1900. Around 22-2300 seems better for the 6s. My 81 with 308 axles and
automatic is going too fast at 27-3000.

Ken


Quoting "(Sandwich Maker)" <adh@xxxxxxxxxxxxxxxxx>:

> 
> " From: "Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>
> " 
> " Somewhere I read that cruising RPM should be near or below the torque peak
> " of the engine.
> " This produces the best engine efficiency.
> " Most of our engines produce their best torque under 3000 rpm and probably
> " closer to 2500. So, if  Casper cruises along at 2100 to 2500 rpm that's
> " probably ideal !!
> " 
> " Armand
> " 
> " Some one slap me if I'm not remembering this correctly.
> 
> you're right, but --
> 
> the 199, 232, and 258 were spec'd to produce max torque -below- 2000,
> according to amc - 1800rpm for the 199.  i've heard this wasn't really
> true and amc was just being coy, but i don't know.  i do know my 199
> will pull my american in top gear from near idle even up a slight
> grade.  i can't imagine the 196 being more 'peaky' or 'cammy'...
> 
> the engine is most -efficient- at torque peak, and you'll get best
> towing if you gear for cruising just above peak; if your speed sags,
> the engine will gain torque.  but most efficient cruising might be at
> lower rpm and less manifold vacuum; you'd save on pumping and general
> mechanical losses.  o/d gearing on most cars today suggests this is
> true.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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