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Automatic Transmission Question

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Robb...@hotmail.com

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Nov 8, 2005, 11:02:15 PM11/8/05
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I have a floor-mounted shifter for my 3-speed automatic in my '91
Plymouth Sundance RS. I have the 2.5L TBI engine w/ Dual Cold Air
Induction.

In addition to "D" (Drive), there are gears "1" and "2". Since they are
there, does this mean that I could shift this transmission manually?

Basically, is it ok to shift an automatic transmission like a manual
transmission?

Will it affect it any, in your opinion?

I've been experimenting with this some lately:

Basically, at a red light, I flick the lever to gear "1".
Then I rev the piss out of the engine right before red line and hold
gear to highest speed possible.
Next, I bump lever to gear "2". I do the same thing; rev piss out of
engine right before redline and hold to highest speed possible.
Then I flick lever to "D" (3rd Gear), and then go on my merry way. I
hold that gear to however fast I'm willing to hold it.
Then I backoff on gas and let the torque lockup kick in and cruise!

I don't do the above all the time (shift right before redline), but I
like to manually shift just so I can select shift points and use the
whole powerband. I have a tachometer.

I've held each gear up to the following speeds:
1st: 45-50 MPH
2nd: 75 MPH
3rd: as fast as I'm willing to take

I have done the following mods on my car:
Gutted Air Box by cutting/removing EVERYTHING out from inside air box
so air flows 100% freely. I have PVC pipe JB welded to right side of
air box where 3" hole is cut. The preheater hose connecter place has
been pried off, and a plate has been used to cover that hole. Vacuum
mechanism, Air intake temp sensor, flap removed as well.
TBI heating system disabled
Stacked several gaskets between air box and TBI
External K&N crankcase breather filter
Gutted Catalyst
K&N air filter (ok, got a good one, other one was defective)
Bypassed Coolant Hoses on intake manifold by removing them fromt there
and running straight hose from thermostat housing to heater core.
Stacked several throttle body gaskets together between intake manifold
and tbi
Dual Cold Air Induction - 2 air scoops mounted under radiator beam with
Dryer Hoses running from them to air box.
180 Degree Thermostat.

So, to take full advantage of these mods, I have to manually shift my
auto transmission at times, so I can get into the High RPM power band
more easily and get the best performance. The cold air induction seems
to increase high RPM power most noticeably due to better breathing.

MaceFace

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Nov 9, 2005, 3:42:17 AM11/9/05
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Robb...@hotmail.com wrote:
> I have a floor-mounted shifter for my 3-speed automatic in my '91
> Plymouth Sundance RS. I have the 2.5L TBI engine w/ Dual Cold Air
> Induction.

> In addition to "D" (Drive), there are gears "1" and "2". Since they
are
> there, does this mean that I could shift this transmission manually?
>
> Basically, is it ok to shift an automatic transmission like a manual
> transmission?

Yeah.

> Will it affect it any, in your opinion?

Redlining the engine is stupid, even a strong engine like the 2.5L.

> I have done the following mods on my car:

If you want to get real, start here:

http://minimopar.knizefamily.net
http://www.allpar.com

Don't concentrate on ignition mods because stock is already damn good.

Al Bundy

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Nov 9, 2005, 9:24:14 AM11/9/05
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It sounds like a dam good plan to me. However, I'd be a little
surprised if this vehicle lasts until your 18th birthday. I'm thinking
it could need some body work even before the mechanical stuff gives out.

H...@nospam.nix

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Nov 9, 2005, 1:26:49 PM11/9/05
to
IMHO, it doesnt really hurt to shift them, but if you abuse them, you
are looking for trouble.

I had a 68 428 Cobrajet Mustang I used to race every weekend. It used
the heavy duty Ford C6 tranny, and I tried every combination of shifting,
etc, possible to lower my quarter mile times.

It was a waste of time.

The best times I ever got were just pulling to the line, locking my brakes,
torquing up the driveline, and then getting off the gas. When the
lights changed, I floored it.

The transmission never gave any problems, by the way.


Al Bundy

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Nov 9, 2005, 6:02:20 PM11/9/05
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Hold off on the bragging rights there.
This bad boy has a 15 year old 4cyl. naturally aspirated POS and wants
to get the most out of it. I don't see how he can hurt anything one way
or another as long as we all stay out of his way.

H...@nospam.nix

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Nov 9, 2005, 7:33:13 PM11/9/05
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"Al Bundy" <MSfo...@mcpmail.com> wrote in message
news:1131577340....@g43g2000cwa.googlegroups.com...

> Hold off on the bragging rights there.
> This bad boy has a 15 year old 4cyl. naturally aspirated POS and wants
> to get the most out of it. I don't see how he can hurt anything one way
> or another as long as we all stay out of his way.

You got that right, Al.. The POS transmission was special case. I would
like
to stay in, nights when 'booger' is on the road.


Robb...@hotmail.com

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Nov 9, 2005, 10:27:47 PM11/9/05
to

Al Bundy wrote:
> Robb...@hotmail.com wrote:
[snipped]

> It sounds like a dam good plan to me. However, I'd be a little
> surprised if this vehicle lasts until your 18th birthday. I'm thinking
> it could need some body work even before the mechanical stuff gives out.

I'm now 21 years old and in college. I've had this vehicle since I was
16 years old in 11th grade. I had this car for 5 years.

The paint and body were in great condition when I first got it. Now,
it's got some big dents and good bit of paint is gone. Car has never
been in an accident, though. Previous owners kept it in garage but
since I've had it, it stayed parked outside.

Interior is in decent shape, though.

Car was a one owner car. I'm the second owner.

Rich Grise, Plainclothes Hippie

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Nov 10, 2005, 4:08:30 PM11/10/05
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On Tue, 08 Nov 2005 20:02:15 -0800, Robby2687 wrote:
...

> Then I flick lever to "D" (3rd Gear), and then go on my merry way. I
> hold that gear to however fast I'm willing to hold it.

Just don't slip and put it in Reverse!

Good Luck!
Rich

Rich Grise, Plainclothes Hippie

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Nov 10, 2005, 4:11:27 PM11/10/05
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On Wed, 09 Nov 2005 19:27:47 -0800, Robby2687 wrote:
>
> I'm now 21 years old and in college. I've had this vehicle since I was
> 16 years old in 11th grade. I had this car for 5 years.

Ooh! And you've already learned arithmetic!



> The paint and body were in great condition when I first got it. Now,
> it's got some big dents and good bit of paint is gone. Car has never
> been in an accident, though.

So, you're saying that you put the big dents in it on purpose?

Please explain.
Rich

Robb...@hotmail.com

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Nov 11, 2005, 10:33:55 PM11/11/05
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Rich Grise, Plainclothes Hippie wrote:
> On Wed, 09 Nov 2005 19:27:47 -0800, Robby2687 wrote:
.[snipped]

> So, you're saying that you put the big dents in it on purpose?
>

They came from:
few hail stones due to storm chasing,
someone backing into my bumper,
thief breaking into my car (smashed my passenger window and ripped my
sound system; he also put dent right beside door),
some kid in the middle of the night apparently threw a rock at my car,
I accidentally hit a pole at a gas station because the alley-way was
way too narrow

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