T56 Experts...question
03-14-2006, 02:55 PM
#1
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T56 Experts...question Why in the hell am I reading these posts on another board stating that, for the sake of the transmission, you should NEVER use 5th or 6th gear unless you're on the highway?
some people say don't drive under 1500 RPM in 5th or 6th, some people say it's 2000 RPM in 5th or 6th and one guy even posts up that he keeps his car above 2250 ALL THE TIME on highways (meaning he either drives 90+ mph or flat-out doesn't use 6th).
What the hell is the point of HAVING a 6th gear if you're going to **** away 2200+ RPM worth of gas at cruising speed? All of a sudden I'm going to damage my 6-speed by using all six gears???
I use 5th on surface streets all the time anywhere after about 40 mph (only about 1400-1500 RPM).
a T56 is nothing but a box with a bunch of shafts and gears inside it...Why does it matter which gear ratio you're in at what RPM???
Usually i wouldn't even ask this question because it sounds flat-out stupid but there are enough of these people agreeing about this to make me wonder if I'm missing something here...
Why have I never read about this with vettes or f-bodies? Next thing ya know, I'll be reading that the Australians warn us not to use the clutch when we shift so we don't wear it out and to always shut the car off at red lights because idling will damage the motor....
some people say don't drive under 1500 RPM in 5th or 6th, some people say it's 2000 RPM in 5th or 6th and one guy even posts up that he keeps his car above 2250 ALL THE TIME on highways (meaning he either drives 90+ mph or flat-out doesn't use 6th).
What the hell is the point of HAVING a 6th gear if you're going to **** away 2200+ RPM worth of gas at cruising speed? All of a sudden I'm going to damage my 6-speed by using all six gears???
I use 5th on surface streets all the time anywhere after about 40 mph (only about 1400-1500 RPM).
a T56 is nothing but a box with a bunch of shafts and gears inside it...Why does it matter which gear ratio you're in at what RPM???
Usually i wouldn't even ask this question because it sounds flat-out stupid but there are enough of these people agreeing about this to make me wonder if I'm missing something here...
Why have I never read about this with vettes or f-bodies? Next thing ya know, I'll be reading that the Australians warn us not to use the clutch when we shift so we don't wear it out and to always shut the car off at red lights because idling will damage the motor....
03-14-2006, 05:59 PM
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I cruise at 70mph/1600rpm all the time. Sometimes if I have to slow down on the highway, I wont shift out of 6th untill the RPM's get to around 1200.
03-14-2006, 06:07 PM
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people are idiots. But make us laugh at the same time. I cruise the same way and have never had problems. The guys are just rambling on like they know something.
03-14-2006, 06:23 PM
#5
I usually drive in 5th or 6th until the rpms go below 1500 rpm, even then I will not downshift unless I am under 1500rpm AND need to accelerate a significant amount. Most of the time it's too much effort to downshift to 5th only then to go back to 6th for my desired speed.
04-17-2006, 09:16 AM
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Originally Posted by DeepBlueZ
Why in the hell am I reading these posts on another board stating that, for the sake of the transmission, you should NEVER use 5th or 6th gear unless you're on the highway?
some people say don't drive under 1500 RPM in 5th or 6th, some people say it's 2000 RPM in 5th or 6th and one guy even posts up that he keeps his car above 2250 ALL THE TIME on highways (meaning he either drives 90+ mph or flat-out doesn't use 6th).
What the hell is the point of HAVING a 6th gear if you're going to **** away 2200+ RPM worth of gas at cruising speed? All of a sudden I'm going to damage my 6-speed by using all six gears???
I use 5th on surface streets all the time anywhere after about 40 mph (only about 1400-1500 RPM).
a T56 is nothing but a box with a bunch of shafts and gears inside it...Why does it matter which gear ratio you're in at what RPM???
Usually i wouldn't even ask this question because it sounds flat-out stupid but there are enough of these people agreeing about this to make me wonder if I'm missing something here...
Why have I never read about this with vettes or f-bodies? Next thing ya know, I'll be reading that the Australians warn us not to use the clutch when we shift so we don't wear it out and to always shut the car off at red lights because idling will damage the motor....
some people say don't drive under 1500 RPM in 5th or 6th, some people say it's 2000 RPM in 5th or 6th and one guy even posts up that he keeps his car above 2250 ALL THE TIME on highways (meaning he either drives 90+ mph or flat-out doesn't use 6th).
What the hell is the point of HAVING a 6th gear if you're going to **** away 2200+ RPM worth of gas at cruising speed? All of a sudden I'm going to damage my 6-speed by using all six gears???
I use 5th on surface streets all the time anywhere after about 40 mph (only about 1400-1500 RPM).
a T56 is nothing but a box with a bunch of shafts and gears inside it...Why does it matter which gear ratio you're in at what RPM???
Usually i wouldn't even ask this question because it sounds flat-out stupid but there are enough of these people agreeing about this to make me wonder if I'm missing something here...
Why have I never read about this with vettes or f-bodies? Next thing ya know, I'll be reading that the Australians warn us not to use the clutch when we shift so we don't wear it out and to always shut the car off at red lights because idling will damage the motor....
Not a prolem under 1200 or so rpm for a sustained amount of time.
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04-17-2006, 09:51 PM
#8
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I drive 6th all the time cam'n hard in some instances.(big cam)
Heck I run at the least 1400ish sometimes w/ a 4.10! LOL at the keyboard mechanic's.
There are 2 overdrives & are meant to be used when possible.
Heck I run at the least 1400ish sometimes w/ a 4.10! LOL at the keyboard mechanic's.
There are 2 overdrives & are meant to be used when possible.
04-17-2006, 10:44 PM
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yea right, carbon build up. sure, so the 14.7 afr your running at cruise is gonna build up carbon. Thats only for initial startup, and even then it stops after your car warms up.
04-17-2006, 11:08 PM
#11
I don't know why people feel the need to spread around bullshit like that.
Use as high a gear as you want for your speed, so long as the engine isn't struggling/bogging. That defeats the purpose
Use as high a gear as you want for your speed, so long as the engine isn't struggling/bogging. That defeats the purpose
04-18-2006, 08:48 AM
#13
considering the engine management system of these engines, I can't possibly see how the hell in the world would you get any more carbon build up at low rpm than at high rpm. In closed loop at any given moment, the pcm is going for stoich ratio for air/fuel.
Due to the nature of the gears, if you want to accelerate in sixth, go right ahead. It's your time your wasting trying to accelerate from a low rpm. Also since an engine PULLS air in, flooring it in sixth gear will make no difference to the engine as going 1/8 throttle in a lower gear. It still can only flow x amount of air through the system only difference is one is restricted by mechanical load, and the other by air restriction.
It is by the grace of god you can accelerate at all in 6th. Most other cars would not budge an extra inch in that gear when so far out of its power band.
Due to the nature of the gears, if you want to accelerate in sixth, go right ahead. It's your time your wasting trying to accelerate from a low rpm. Also since an engine PULLS air in, flooring it in sixth gear will make no difference to the engine as going 1/8 throttle in a lower gear. It still can only flow x amount of air through the system only difference is one is restricted by mechanical load, and the other by air restriction.
It is by the grace of god you can accelerate at all in 6th. Most other cars would not budge an extra inch in that gear when so far out of its power band.
04-18-2006, 03:00 PM
#14
Originally Posted by SladeX
considering the engine management system of these engines, I can't possibly see how the hell in the world would you get any more carbon build up at low rpm than at high rpm. In closed loop at any given moment, the pcm is going for stoich ratio for air/fuel.
Due to the nature of the gears, if you want to accelerate in sixth, go right ahead. It's your time your wasting trying to accelerate from a low rpm. Also since an engine PULLS air in, flooring it in sixth gear will make no difference to the engine as going 1/8 throttle in a lower gear. It still can only flow x amount of air through the system only difference is one is restricted by mechanical load, and the other by air restriction.
It is by the grace of god you can accelerate at all in 6th. Most other cars would not budge an extra inch in that gear when so far out of its power band.
Due to the nature of the gears, if you want to accelerate in sixth, go right ahead. It's your time your wasting trying to accelerate from a low rpm. Also since an engine PULLS air in, flooring it in sixth gear will make no difference to the engine as going 1/8 throttle in a lower gear. It still can only flow x amount of air through the system only difference is one is restricted by mechanical load, and the other by air restriction.
It is by the grace of god you can accelerate at all in 6th. Most other cars would not budge an extra inch in that gear when so far out of its power band.
Also gotta love the low end torque of a V8, most 4 bangers gotta turn 4,000 RPM in O/D just to maintain 65MPH on the highway
04-18-2006, 09:42 PM
#16
Originally Posted by SUTTERERMAN85
i heard somebody say that you should never use 5th or 6th...ever
j/k i had to
j/k i had to
LOL it seems that way with some of the **** people say on here
04-19-2006, 11:13 PM
#18
Originally Posted by Wesmanw02
If the engine is only pulling in a certain volume of air at any given RPM, it will only be using a set amount of fuel, since the ECU wants to keep the A/F ratio right. This isn't so true with a Carb, since flooring it will dump in tons of fuel and most lilely flood the engine
