4L60E Rebuild Checklist
Thread Starter
On The Tree
Joined: Jan 2016
Posts: 111
Likes: 7
From: Nebraska
4L60E Rebuild Checklist My transmission is slipping on the 2-3 shift so im looking for a rebuild. Since im going to be inside the thing Id like to get a a few good ideas of what else I should look into replacing for good performance. I have also read a few threads were people had their transmission rebuilt and it still had the 2-3 WOT slip issue. Is there anything specific to be sure to do for this? If I rebuild the transmission and it doesnt fix the problem I will sell the car lol.
Links to specific parts is highly appreciated.
Links to specific parts is highly appreciated.
Since nobody's responded, I'll give the list I used in my rebuild
The valve body mods are overkill, but it's fun. If you have higher hp, add a billet output shaft... (I think that's the weaker of the two shafts)
https://ls1tech.com/forums/automatic...ld-thread.html
-Sonnax Smart Shell
-New reverse input drum
-Rebuild kit from trutechtrans (includes band, pistons, seals, frictions, bushings, etc)
-Sonnax second and fourth servos
-Transgo separator plate
-A/C Delco wire harness with all solenoids, EPC, manifold sensor, etc
-Sonnax TCC apply valve kit
-Sonnax accumulator valve train kit
-3-2 control valve spring
-Sonnax forward and reverse abuse valves
-Sonnax actuator feed limit kit
-Sonnax performance pack (includes boost valve, pinless accumulators, etc)
-Sonnax TCC regulator & isolator valve kit
-Derale transmission cooler
-Magnafine inline filter
-Borg Warner reverse and forward 29 element sprags
-Sonnax torrington bearing kit
-looking into a basic Circle D torque converter
-AC Delco dex VI fluid
The valve body mods are overkill, but it's fun. If you have higher hp, add a billet output shaft... (I think that's the weaker of the two shafts)
https://ls1tech.com/forums/automatic...ld-thread.html
-Sonnax Smart Shell
-New reverse input drum
-Rebuild kit from trutechtrans (includes band, pistons, seals, frictions, bushings, etc)
-Sonnax second and fourth servos
-Transgo separator plate
-A/C Delco wire harness with all solenoids, EPC, manifold sensor, etc
-Sonnax TCC apply valve kit
-Sonnax accumulator valve train kit
-3-2 control valve spring
-Sonnax forward and reverse abuse valves
-Sonnax actuator feed limit kit
-Sonnax performance pack (includes boost valve, pinless accumulators, etc)
-Sonnax TCC regulator & isolator valve kit
-Derale transmission cooler
-Magnafine inline filter
-Borg Warner reverse and forward 29 element sprags
-Sonnax torrington bearing kit
-looking into a basic Circle D torque converter
-AC Delco dex VI fluid
Teching In
Joined: Apr 2017
Posts: 47
Likes: 1
From: Oregon
Has anyone looked at the new 74140-01K Sonnax 3-4 Backing plate kit? Its considerably more money than new A/C Delco parts. I am just wondering if its helpful or something that can be skipped for towing? I found this bit of info repeated several times here, so this is what I have parts wise, but I know every once in a while things change.
I run seven OEM thickness Borg Warner frictions, and six .076" (late 700R4) steels, along with a new OEM AC Delco apply plate and backing plate in every 3-4 I build. Nothing else will work as well...
