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

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" 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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