its going to make lift companies either fix the pinion angles they set them at or include new drive shafts though.
2020 hd
- Thread starter Michigan_LMM
- Start date
its going to make lift companies either fix the pinion angles they set them at or include new drive shafts though.
The 1st gen L5P cooling was impressive to begin with, sounds like with the improvements it should be even better.
I think this is a super cool feature!!!!
What does everyone think of the 1st gear tq converter lockup ?
What does everyone think of the 1st gear tq converter lockup ?
I like it. I lock mine as much as possible im my LMM. My shift schedule is modified for it too
All 10 of them. 10th gear is pretty close to the same ratio as the current 6th. 1st is much lower. It’s called a wide gear spread.
Sure I know they have some lower gears down low but don’t you think they have at least 1 maybe 2 final drive ratios higher than the 6 speed? I haven’t seen a final drive ratio chart if it is available yet. I suspect rpms will be way too low on 35s at highway speed and/or you won’t make it out of 8th or 9th.
No they don’t. Almost identical ratio 6th & 10th. These new trannys don’t usually offer a significantly higher OD, it’s a larger gear spread that they are after. IIRC, in the new 10 speed, 10th actually is a tiny bit numerically higher than the current 6th, so actually a lower gear ratio. That could be because of the larger stock tires on the 2020.
Here’s the ratios,
First number is the 6 speed the second number is the 10 speed.
1st 3.094 4.54
2nd 1.809 2.86
3rd 1.406 2.06
4th 1.00 1.72
5th 0.711 1.48
6th 0.614 1.26
7th 1
8th 0.85
9th 0.68
10th 0.63
R 4.48 4.54
First number is the 6 speed the second number is the 10 speed.
1st 3.094 4.54
2nd 1.809 2.86
3rd 1.406 2.06
4th 1.00 1.72
5th 0.711 1.48
6th 0.614 1.26
7th 1
8th 0.85
9th 0.68
10th 0.63
R 4.48 4.54
6-9th will be real nice for pulling grades with a load.
ill bet this sucks pulls hills like a bat out of hell with those kinds of ratios. keep that truck right in its power band without revving the hell out of it.
now if they will make a conversion for older years.... :roflmao:
ill bet this sucks pulls hills like a bat out of hell with those kinds of ratios. keep that truck right in its power band without revving the hell out of it.
now if they will make a conversion for older years.... :roflmao:
if you can get into the TCM and develop a skip gear tune (assuming it can happen on this trans), it may not be an issue. it would actually give you alot of possibilities to keep the truck in a good power band down the track but skipping useless gears due to the upped power.
skipping will depend on the internal design and how clutches are applied though.
Can you do this again adjusting for the new rear ratio?
I'm not near my computer to run the numbers
Is this what you’re looking for?
1st 3.094 - 11.540
2nd 1.809 - 6.747
3rd 1.406 - 5.244
4th 1.00 - 3.730
5th .711 - 2.652
6th .614 - 2.290
R 4.48 - 16.710
1st 4.54 - 15.526
2nd 2.86 - 9.781
3rd 2.06 - 7.045
4th 1.72 - 5.882
5th 1.48 - 5.061
6th 1.26 - 4.309
7th 1.00 - 3.420
8th .85 - 2.907
9th .68 - 2.325
10th .63 2.154
R 4.54 - 15.526
1st 3.094 - 11.540
2nd 1.809 - 6.747
3rd 1.406 - 5.244
4th 1.00 - 3.730
5th .711 - 2.652
6th .614 - 2.290
R 4.48 - 16.710
1st 4.54 - 15.526
2nd 2.86 - 9.781
3rd 2.06 - 7.045
4th 1.72 - 5.882
5th 1.48 - 5.061
6th 1.26 - 4.309
7th 1.00 - 3.420
8th .85 - 2.907
9th .68 - 2.325
10th .63 2.154
R 4.54 - 15.526