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2004 C5 auto downshift RPM?

  • Thread starter Thread starter BogSpores
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BogSpores

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I've been lurking in this forum for a few weeks (right after I purchased my vette) reading all the great info for noob's like myself.......

Now for my first question......I've noticed that at 30mph if I "floor" the pedal, the tranny downshifts to 1st gear, until 6000rpm redline, then it shifts to 2nd and finally 3rd.....All this is as expected.....It accelerates like a "raped ape".....Verrry nice!......

Now, if I'm going 40mph, and "floor" the pedal, the tranny only shifts down to 2nd, and I "sluggishly" accelerate from there.......I figured, at 40mph, the tranny would still downshift to 1st for a short time to build RPM's, then 2nd and 3rd.....

Is this "normal" operation for this tranny and LS1 combo?....I've got the 3.15 gears in the rear.......
 
First off welcome to the site! I know it is probably different but my 1987 is the same way the cutoff for me is around 22. After that it just shifts down to second and will go, You can always move the selector into Low1, which is what I do, you just have to watch and see how fast you are going obviously.
 
BogSpores,
That's an interesting name!
Welcome to the CAC, and congratulations on your 04.
I don't have an auto, so I can't answer your question. But just hang tight and you'll get some answers on the shifting question.

Tammy :w
 
Thanks for the warm welcomes!......I've wanted a vette since I was 9 or 10, and now it's finally parked in my garage!...... ;)

I figure there's nothing wrong with my tranny.....I just thought it would downshift into 1st at 40mph for a brief period for sudden acceleration......

The name "BogSpores"......heh heh, it's a long story, but a funny one!.......I'll share if anyone is curious......
 
Greetings and Welcome,

You'll find a lot of great people around here if you have not already.
To me the downshifting sounds about right. If you are going 40mph in third and try to shift down to first you would only be in first for a split second. Here is something to try to confirm that. Go 30mph, floor it and see at what speed it does shift out of first automatically. If it shifts out around 40 - 43mph you might have your answer. It's just something you have to learn about every car, where there strengths and weaknesses are. Enjoy the ride though, it is a sweet one. And don't forget to Wave to all Corvettes.

~Ripp
 
if you get a power programmer or predator i believe you can change your shift points. Might wanna look into that. I dont have an auto but im almost 100 percent sure.
 
Thanks again for the welcomes!....I feel like family already!...... ;)

I've already started waving at other vettes (a habit started with my Jeep!)...... ;)

Yeah, I figure you guys (and gals) are right about the shift point being correct.......I'll go out and experiment with it a little and see if I can determine where the WOT shift is from 1st to 2nd.......

I'll look into the programmer option......I have a "SuperChips" on my Ford F-250 6.0L turbodiesel and it is unbelieveable!......(It feels faster than my vette!) ;)
 
I want to hear about "BogSpores".
Mr. S has been wanting to get a chip for his F250 superduty (not a diesel though). I would like to hear about that too.


Tammy
 
The SuperChips programmer adds 150+ hp and 235 ft. lbs. of torque to the F-250 6.0L diesel engine.....which brings the power to 475+hp and over 800 ft. lbs of torque!......It really is unbelievable how much power these diesel engine can produce!.....Since the programmer removes the speed limiter, I can run well (and I mean WELL) over 100mph before topping out.....Although, the tires aren't rated for that speed, and it would be foolish to push a truck this size to those speeds.....I can put it in 4x4, and smoke all 4 tires on take-off......It will "smoke" both rear tires, even when rolling 15mph.....The power is extreme.....My wife has been driving the Ford next to me in the vette and has been able to "punch it" and hang with me up to and over 100mph.....She then backed off due to the tires on the Ford.....It's a beast!, no doubt about it......


I'll apologize in advance for the length of the story that follows.......

About the name "BogSpores"......

Several years ago, I took my 11 year old son, Nick down to a pond (more like a swamp or bog) to hunt ducks......

It wasn't long before Nick started getting brave and walking right along the waters edge.....Considering I grew up with a "gun in hand" hunting this pond/bog, I knew how deep the mud could be right next to the water.....I told him to beware, because the crust could break through at any moment and you'd plunge up to your waist in deep, black, stinky mud.......

Just like all kids nowadays, he knew better than ol' Dad, and continued to trek closer and closer along the waters edge......Sure enough, without any warning, Ker' Splosh!.....He instantly sunk into the vile muck......He struggled for a minute, which only got him deeper.....Within 30 seconds, he was sunk up to his thigh's and starting to panic......I couldn't help but roll on the bank in laughter!......He didn't appreciate my enthusiasm, and began to get upset about the situation......He struggled for what seemed like an eternity, before finally freeing himself from the sludge.....To add insult to injury, his shoes (due to extreme suction of the mud) remained planted at the bottom of the bog, where they lay to this day......Poor kid had to walk out of the woods with no shoes, and covered in an awful smelling funk!......When we arrived back at my parents house, my Dad (his Grandpa) asked him what happened......Nick began telling him about the mud and getting stuck in the bog.....Now my Pop is a good prankster, and listened with interest as Nick gave details about his experience.....When Nick finished his story, my Dad looked at me with a grave look in his eyes and said "He didn't fall into the black, stinky mud down at the bog did he?.....I said, "yes, unfortunately, that's the mud....."

Nick saw the worry in our eyes and the tone of our voices and began to get scared......"What's wrong with the mud?" Nick asked......I told him that getting stuck in the mud was only half of it......The worse part was about to follow....."What part?" he asked......" The infection caused by the sludge he was covered in......"What infection?....what are you guys talking about?......We're talking about the dreaded "BOG SPORES" infection, which causes tenticles and green, lumpy warts to grow from ones skin......At this point, he began to get very pale, and was sure his future with girls was coming to a close......After a few more gruesome details about the bogspores infection, he quickly ran to the comfort of his grandma who told him he'd been the victim of a cruel joke!...... ;)

My dad and I still get a good laugh whenever this story comes up......Although Nick still fails to see the humor in it...... ;)

So that's it......and I've been "BogSpores" ever since!.......
 
Great story!:L

Your tranny works exactly like my 98 auto and I believe it is working properly. Under 30 MPH it will downshift and screetch the rubber until it hits the rev limiter. Over 30 it's a "bogspore" until the RPM's are over 3500. Manually shifting into 2nd will help get the RPM's up faster as it kicks out the lock up on the torque converter.
 
Heh heh.....glad you like the story and didn't get bored to death..... ;)

Yep, it sounds like are cars are similar in the tranny operation.......At least it's good to know there's probably nothing wrong with my tranny......
 
That is a good story. :L 11 year olds are at that perfect age for playing pranks like that. Well done!
 

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