6L80 - 377 gears

[dhutton]

I would contact Speartech. They are very good with those transmissions. You can send the trans controller to them for programming. Instructions on their website on how to remove it.

Don

[Rocketw19]

Originally Posted by dhutton

I would contact Speartech. They are very good with those transmissions. You can send the trans controller to them for programming. Instructions on their website on how to remove it.

Don

I'm going to google them now. Thank you very much

[hifi875]

that sounds like a lot of gear for that tranny. most cars run low numberic gears with that tranny don't they? My father inlaw had a 6l80 with a ls9 and 3.89 gears several years ago and it was way too much. Due to lack of computer programing for a ls9/6l80 in 2010 he ended up pulling it out and going t56 magnum

[dhutton]

Originally Posted by hifi875

that sounds like a lot of gear for that tranny. most cars run low numberic gears with that tranny don't they?

I was thinking the same thing but he said he is running 22 inch wheels so maybe it is ok?

Don

[Rocketw19]

Originally Posted by dhutton

I was thinking the same thing but he said he is running 22 inch wheels so maybe it is ok?

Don

Ya I am not gonna lie I have no clue the math but my tuner and the the shop that installed the gears both recommended 373 sorry not 377. (over all tire height is 30")
can feels great everywhere specially on the freeway its a freight train even first or taking off dont suck but it should smoke the tires at half throttle. I never dyno-ed it as the numbers are not that important to me but its got to be close to 500 at the wheels.

Monday my tuner is gonna plug it in and go over everything I hope its something silly but my luck it isn't.

[dhutton]

Originally Posted by Rocketw19

Ya I am not gonna lie I have no clue the math but my tuner and the the shop that installed the gears both recommended 373 sorry not 377. (over all tire height is 30")
can feels great everywhere specially on the freeway its a freight train even first or taking off dont suck but it should smoke the tires at half throttle. I never dyno-ed it as the numbers are not that important to me but its got to be close to 500 at the wheels.

Monday my tuner is gonna plug it in and go over everything I hope its something silly but my luck it isn't.

Your tuner cannot tune the transmission without removing the controller. If you are running the stock transmission controller tune that could be your problem. Which torque converter are you running?

Don

[Rocketw19]

Originally Posted by dhutton

Your tuner cannot tune the transmission without removing the controller. If you are running the stock transmission controller tune that could be your problem. Which torque converter are you running?

Don

stock converter.
I have no idea what he is gonna do honestly. I am not smart at all when it comes to that stuff at all. I just know he is and Im taking car to him in 12 hours hopefully later tonight I can post something good

[214Chevy]

Originally Posted by dhutton

I would contact Speartech. They are very good with those transmissions. You can send the trans controller to them for programming. Instructions on their website on how to remove it.

Don

I 2nd that. I spoke to them and that's who I'm sending mine to when it's time.