4L80E swap what is needed?
03-24-2005, 08:52 AM
#11
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Oh, as in gear ratios...
I got that info.
700R4 / 4L60 / 4L60E / 4L65E
1st: 3.06:1 2nd: 1.63:1 3rd: 1:1 (direct) 4th: .696:1 (overdrive) Reverse: 2.294:1
4L80E (with standard ratios)
1st: 2.48:1 2nd: 1.48:1 3rd: 1:1 4th: .75:1 Reverse: 2.077:1
4L80E (with 2.75:1 1st gear aftermarket ratios)
1st: 2.75:1 2nd: 1.57:1 3rd: 1:1 4th: .75:1 Reverse: ??? (can't find any info & doesn't really matter all that much)
For reference:
TH350 (with standard ratios)
1st: 2.52:1 2nd: 1.52:1 3rd: 1:1 4th: ---- Reverse: 1.93:1
TH400 (with standard ratios)
1st: 2.48:1 2nd: 1.48:1 3rd: 1:1 4th: ---- Reverse: 2.077:1
Hope that helps. As you can see, the 80E has a fair bit less gear spread than the 60 (even with a low gear option). Which can be good for reduced rpm drop, but potentially bad for fuel economy.
'Dreamin'
I got that info.
700R4 / 4L60 / 4L60E / 4L65E
1st: 3.06:1 2nd: 1.63:1 3rd: 1:1 (direct) 4th: .696:1 (overdrive) Reverse: 2.294:1
4L80E (with standard ratios)
1st: 2.48:1 2nd: 1.48:1 3rd: 1:1 4th: .75:1 Reverse: 2.077:1
4L80E (with 2.75:1 1st gear aftermarket ratios)
1st: 2.75:1 2nd: 1.57:1 3rd: 1:1 4th: .75:1 Reverse: ??? (can't find any info & doesn't really matter all that much)
For reference:
TH350 (with standard ratios)
1st: 2.52:1 2nd: 1.52:1 3rd: 1:1 4th: ---- Reverse: 1.93:1
TH400 (with standard ratios)
1st: 2.48:1 2nd: 1.48:1 3rd: 1:1 4th: ---- Reverse: 2.077:1
Hope that helps. As you can see, the 80E has a fair bit less gear spread than the 60 (even with a low gear option). Which can be good for reduced rpm drop, but potentially bad for fuel economy.
'Dreamin'
03-24-2005, 07:27 PM
#14
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Originally Posted by 2toneblown
Hey guys check out www.speed-eng.com they have a nice conversion kit for 2wd and 4wd. 4wd still need a few parts to be fabricated. Check it out and it tells you everthing you need and everything they have and dont have.
03-24-2005, 08:01 PM
#15
TECH Junkie
You are better off to start with 2001 or later 4L80E,everything from a 6.0 2500 truck will work.So check the wrecking yard to save some money a complete transmission with the switches,flywheel and converter would be a good start.You'll need an adaptor harness,a second out speed sensor cable and programming.You'll need to modify your crossmember to reposition the transmission's mount.The stock driveshaft will probably work with a th400 output shaft and a adapter u-joint[mine did].If you go aftermarket on your converter Yank requires a crank spacer and 6 bolt flywheel[I have one]and a Vigilante will bolt to your stock flywheel.If you start to do the swap I've got some of the parts laying around my garage so maybe I can help.
03-26-2005, 10:45 AM
#16
Originally Posted by whitt1
You are better off to start with 2001 or later 4L80E,everything from a 6.0 2500 truck will work.So check the wrecking yard to save some money a complete transmission with the switches,flywheel and converter would be a good start.You'll need an adaptor harness,a second out speed sensor cable and programming.You'll need to modify your crossmember to reposition the transmission's mount.The stock driveshaft will probably work with a th400 output shaft and a adapter u-joint[mine did].If you go aftermarket on your converter Yank requires a crank spacer and 6 bolt flywheel[I have one]and a Vigilante will bolt to your stock flywheel.If you start to do the swap I've got some of the parts laying around my garage so maybe I can help.
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