Re: [Amc-list] Early 80's 4-cyl bellhousing

[Ken Ames <ameskg@xxxxxxxxx>]

"but...  the s10/blazer, which must be similar in weight, paired the
> iron duke with t5s..."

One must also consider the differential ratio and tire size of the Blazer when
comparing.

Ken 

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

> 
> " From: Frank Swygert <farna@xxxxxxx>
> " 
> " BAD IDEA!! That little four (a 2.5L GM "Iron Duke" in your case)
> " doesn't have the torque to pull an OD. It probably doesn't have enough
> " to pull an OD five speed either. The OD gear in most five speeds is
> " similar to that of the old ODs, so if you do go this route do yourself
> " a favor and find a T-5. In either case you'll need a lower rear axle
> " ratio to pull the OD.
> 
> but...  the s10/blazer, which must be similar in weight, paired the
> iron duke with t5s...
> 
> " A common misconception is that OD adds a higher gear -- it does just
> " the opposite. Check the books for any old car with a three speed and
> " OD and you'll find that it used a much lower rear axle ratio than a
> " car with a standard three speed. OD reduces rpm in a street/strip car
> " that's set up to run on the strip without using OD, that's why people
> " think it's such a great thing! That's not the case in a pretty much
> " factory stock car though. 
> 
> not always true.  standard axle in a late '60s american with 199/t96
> was 3.08, but o/d could also be had with 3.08.  okay, this is a notch
> lower than the optional 2.73 without...  but even with the 3.08, o/d
> was set to engage at 38 mph!  from my own experience, the 199 is
> definitely ready by 45.
> 
> from my limited data, in the late '60s o/d axles were only one notch
> lower than without.
> ________________________________________________________________________
> 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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