Angry50
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do converter before gears then decide
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zanGTA
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is this good only for 1/4 mile or could work well for "handling" track too? Because i'm in europe and the drag is not very popular here :shrug:
18psi
of boost
I have the auto with 3.55 and absolutely love it. With the Flex Fuel tune and really aggressive shifting program, the car is surprisingly quick and feels very torquey.
1st is short, really short, I can't imagine having it any shorter than it is, it's already near impossible to not spin over half throttle even with 275's.
I think if you're looking for that feeling of torque/thrust, this might be a pretty killer combo, but as the others have mentioned, the car likely won't be any faster overall.
1st is short, really short, I can't imagine having it any shorter than it is, it's already near impossible to not spin over half throttle even with 275's.
I think if you're looking for that feeling of torque/thrust, this might be a pretty killer combo, but as the others have mentioned, the car likely won't be any faster overall.
EFI
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Higher RPM converters multiply the torque more and also flash the engine at a higher RPM to get into the powerband quicker. Also shift extension (the RPM drop after a shift) is higher so you're once again in a better part of the powerband after a shift.
Those have nothing to do with handling, it will just make your car faster mainly from a stop. It will help to accelerate the car faster from any speed, but the main thing about these is they help get going from a stop where the RPMs are low and limited to how high you can get.
2015 Silver GT
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A converter will help get you into your power band quicker than gears. The stock converter flashes somewhere around 1800 rpm while a converter depending on the size will flash to 3600ish rpm. Trust me a converter is a much better choice.
A gear change will require you to buy a whole new rear pumpkin and the Whipple Flare tool just to make the appropriate changes. A lot of money for no performance gain.
A gear change will require you to buy a whole new rear pumpkin and the Whipple Flare tool just to make the appropriate changes. A lot of money for no performance gain.
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18psi
of boost
He did say that he's not into drag racing, so what other benefits does the converter provide? Doesn't it just lock up when shifting it manually with paddles from a rolling speed? I'm no expert so I'm all ears on how a converter will help a road race/twisties car
WestCyril
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A converter will optimize the power the car is already making. Converter will make the car feel much more responsive from a stop and low roll. After 40+mph you cant tell the difference just cruising around.
I went with a 5C converter which is one of the higher stall speed converters circle d makes. I daily drive my car and its bearable and made the car a completely different animal.
I would recommend something a little looser than stock but much tighter than my converter for most people.
I'm going with a 3.55 gear now as well. Id recommend the gear change for most people.
I went with a 5C converter which is one of the higher stall speed converters circle d makes. I daily drive my car and its bearable and made the car a completely different animal.
I would recommend something a little looser than stock but much tighter than my converter for most people.
I'm going with a 3.55 gear now as well. Id recommend the gear change for most people.
69mach1-395
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Not sure why anyone talks about wheel diameter when tire diameter is what matters here...
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zanGTA
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Do you refer to my post with top speed vs gear? If yes, i wrote the wheel diameter because everyone knows these data. Ofc the most correct would be wirte 27.3" overall diameter for 20" wheels and 27.1" overall diameter for 19" wheels. Doing the maths I considered the more reliable data provided by tire company "revs per mile" instead to calculate from the wheel diameter.
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zanGTA
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Tomorrow I'll do a bit more research and Ill post a graph of the force (newtons) appliead to the wheels in each gear and an estimate of the acceleration (m/s2). So let's see the teorical difference of a launch between with 3.15 and 3.73.
It anyone of you that uses a converter can post a video of rpm ann ground speed during a launch I will try to buid a graph for that scenario too
It anyone of you that uses a converter can post a video of rpm ann ground speed during a launch I will try to buid a graph for that scenario too
Dominant1
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A stall speed converter is money well spent, my 5c launches the car very hard even when im not flashing it! Just tromp it and your gone!!!
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zanGTA
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So, finally my maths are ready. I considered even the drag force and tire resistance.
In this graph you can see the acceleration vs speed in km/h.
The first grear with the teorical acceleration over the 9m/s2 is useless in normal driving and to get 2s in the first 60' the acceleration is not much more than 9 m/s2.
What do you think? Are you still sure the final ratio doesn't change anything in the car?
The full image can be downloaded from my dropbox here:
https://www.dropbox.com/s/giuftvalndkntes/Screenshot 2017-04-24 19.06.00.png?dl=0
These are the data from which I build the graph
https://www.dropbox.com/s/gwmkl96u0bdhauj/Screenshot 2017-04-24 19.11.30.png?dl=0
And this is about the drag and tire force:
https://www.dropbox.com/s/ozt43l1xp7itidu/Screenshot 2017-04-24 19.12.20.png?dl=0
In this graph you can see the acceleration vs speed in km/h.
The first grear with the teorical acceleration over the 9m/s2 is useless in normal driving and to get 2s in the first 60' the acceleration is not much more than 9 m/s2.
What do you think? Are you still sure the final ratio doesn't change anything in the car?
The full image can be downloaded from my dropbox here:
https://www.dropbox.com/s/giuftvalndkntes/Screenshot 2017-04-24 19.06.00.png?dl=0
These are the data from which I build the graph
https://www.dropbox.com/s/gwmkl96u0bdhauj/Screenshot 2017-04-24 19.11.30.png?dl=0
And this is about the drag and tire force:
https://www.dropbox.com/s/ozt43l1xp7itidu/Screenshot 2017-04-24 19.12.20.png?dl=0
69mach1-395
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^does that assume no tire slippage whatsoever? I think hooking up is the real world hard part.
Lucky13Cat
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What's circle D converter approximately cost installed? Will this be needed with the new 10 speed trans?:shrug:
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