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Old 08-10-2006, 03:57 PM   #11
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Quote:
Originally Posted by mrbell83
Quote:
Originally Posted by bandit
the reason behind outting it in Drive (3rd) whiel under like 40mph or sois that when its in Drive(3rd) gear it is 1:1 raitio... so the Planitary gears arnt spinning in the trans.. in O-Drive(4th) the planitary gears are spinning so it couses more Heat and moves more parts...
Well that makes sence, but unless you live in Chicago or something like that where it really is stop and go constantly all the time I really don't think it matters......... IMHO......
your also shifting up and down alot at that speed... if you coast for a second, it will jump into 4th, then once you try to accelerate a bit, it will downshift into 3rd... its just unneeded shifting that will theoretically wear out the clutches faster
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Old 08-10-2006, 03:57 PM   #12
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Quote:
Originally Posted by mrbell83
Quote:
Originally Posted by bandit
the reason behind outting it in Drive (3rd) whiel under like 40mph or sois that when its in Drive(3rd) gear it is 1:1 raitio... so the Planitary gears arnt spinning in the trans.. in O-Drive(4th) the planitary gears are spinning so it couses more Heat and moves more parts...
Well that makes sence, but unless you live in Chicago or something like that where it really is stop and go constantly all the time I really don't think it matters......... IMHO......
yeah me too. but i also have alot of 45mph roads around me soo... i do it sometimes...
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Old 08-10-2006, 04:10 PM   #13
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Do you guys really understand where all of this came from?

A lot of this came from the days before electronicly controled transmissions...


Most of the GM hydraulic 4 speed OD transmissions weather they are the 4T60 or 4L60( 700 R4 ) Had a lot of gear hunting issues... and at certain speeds these transmissions could hunt a lot between 3rd and 4th gears... This was hard on the trans and there for it was reccomemded that these cars and trucks maintain 3rd( D) blow 45mph as to avoid gear hunting...

Things got a lot better with the later 4T60'* and even better yet with the 4T60-E... with the newer transmissions gear hunting is not a real issue... The TCC could get a bit of a workout, if you are driving and the TCC is coming in and out too much for your liking you could then go to 3rd gear( D in 96 and earlier models )...

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Old 08-10-2006, 04:16 PM   #14
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One past N...

It'* programmed to do the rest.. Afterall...these aren't standard transmissions.
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Old 08-10-2006, 04:19 PM   #15
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Quote:
Originally Posted by BillBoost37
One past N...

It'* programmed to do the rest.. Afterall...these aren't standard transmissions.
Correct

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Old 08-10-2006, 04:22 PM   #16
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Quote:
Originally Posted by jr's3800
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Originally Posted by BillBoost37
One past N...

It'* programmed to do the rest.. Afterall...these aren't standard transmissions.
Correct
i wouldnt say that these "arent standard transmissions" if anything, our transmissions are getting outdated
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Old 08-10-2006, 04:29 PM   #17
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Quote:
Originally Posted by toastedoats
Quote:
Originally Posted by jr's3800
Quote:
Originally Posted by BillBoost37
One past N...

It'* programmed to do the rest.. Afterall...these aren't standard transmissions.
Correct
i wouldnt say that these "arent standard transmissions" if anything, our transmissions are getting outdated
They still do what they were meant to do, and frankly, that'* all that matters to me.
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Old 08-10-2006, 06:18 PM   #18
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I always drive it in OD.

My friend told me that flooring it in Drive will make it go a little faster than flooring it in OD. I told him it didn't, but I told him putting it in performance ride gives it 25 extra HP.
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Old 08-10-2006, 06:31 PM   #19
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I always leave it in D.
I only use 3, 2 or 1 to decelerate.
Except when drag racing, I do my burnouts in 2.
Also to obtain maximum acceleration start out in D then after the 1-2 shift, drop it back down to 2, so it will wind up to the 6200 rev limiter at 103 mph.(stock ratios assumed).

For the 2000+ cars leaving it in D is the best because it will shift at 6000 rpm in 1st. If you select another gear like 3, 2 or 1, it will shift at 5500 rpm. This is probably only specific to the INTENSE PCM reburn.
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Old 08-10-2006, 07:42 PM   #20
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Too much thinkin'. Put 'er in Drive and mash on the throttle! My 93 has 195k under this philosophy with nary a hiccup from the transmission. Giddyup!
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