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Old 09-17-2020, 12:22 PM   #26
Tom
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Re: Tom's 4L60E build

Amazing. This is why I didn't try it myself.
As for the water...I had the trans in the detail bay at the dealership I work at. I'm assuming a cleaner got some on it being careless.
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Old 09-17-2020, 04:22 PM   #27
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Re: Tom's 4L60E build

This tutorial is fantastic!

clinebarger is a true professional who doesnt mind sharing his expertise....

Thank you!

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Old 09-17-2020, 09:57 PM   #28
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Re: Tom's 4L60E build

Got the Band Clearance right with a Sonnax 77787-02K servo pin kit, Uses 700R4 Teflon seals for the 4th apply circuit & an O-ring to seal where the 2nd apply piston rides......


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Old 09-17-2020, 10:05 PM   #29
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Re: Tom's 4L60E build

Finished up the pump, Running a Sonnax .490" Boost Valve & a 10% over Regulator Spring......



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Old 09-17-2020, 11:23 PM   #30
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Re: Tom's 4L60E build

Next up is the 2nd & 4th Accumulators, Spacer Plate, & Valve Body....


*I blocked the 4th Accumulator by driving a .250" check ball into the 4th Clutch feed hole in the case, If you leave the Accumulator piston in the case......The Lo/Reverse Clutch will no longer receive orificed lube while in 4th gear. So I leave the piston & pin out of the case & let Accumulator Oil feed the orificed lube circuit at all times.

*The 2nd Accumulator Piston, Springs, & Housing were in excellent shape & got reused with a new piston seal.

*This in a new OE GM spacer plate for a 2003 Silverado SS.....
2nd feed.....Left factory at .073"
3rd feed.......093"
3-4 Circuit....093"
4th feed........093"
BR (Band Release).....Left factory a .086"


*Basically installed most of a TransGo SK-4L60E shift kit.....
*Did not use the 2nd Accumulator Springs as they break.
*Did not use the 4th Accumulator Spring because it's blocked.
*Did not use the Pressure Regulator Spring because I use the Sonnax 10% over one, I DID use the PR Bumper Spring though.


*****Your Accumulator Valve was stuck HARD in it's Bushing, I had a like new one with the same (DX) code, Was this thing "Thumping" into 2nd before it started slipping??

This PIN (Arrow) can be removed & allows access to the Accumulator Valve & Bushing without dropping the Valve Body.
I used the recommended 24oz TG spring (For a DX Accumulator Bushing & a Vette Servo)
****After a minimum of 500 miles, If you find the 1-2 Shift a little soft for your liking......Swap the Accumulator Spring for the next heavier weight. I'll send all the extra Accumulator Springs with the trans.

****If the 1-2 Shift is too Firm for your liking.....Remove the Spring entirely.
IF it's still too firm......You'll need to source a YZ,C,CX code Accumulator Bushing & Valve, These are found in Camaro, Firebird, & Corvette 4L60E's.
A,AX,B,BX code bushings are found in 700R4 & 4L60 units & require a slight modification to work with the "Special Pin"
I'm confident you'll be happy with the 1-2 shift after the Band gets seated in, But without being able to test drive it myself.....It's definitely a variable!











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Old 09-17-2020, 11:31 PM   #31
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Re: Tom's 4L60E build

Forgot the most important page.....This gives you the Accumulator Spring colors to their respective weights.....

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Old 09-17-2020, 11:33 PM   #32
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Re: Tom's 4L60E build

Waiting for a Delco Filter from Amazon......Nobody has one locally! F'ing Covid!!!!!
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Old 09-18-2020, 07:59 AM   #33
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Re: Tom's 4L60E build

Thank you for your excellent tutorial...plain language, excellent images....

True professional....

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Old 09-18-2020, 10:26 PM   #34
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Re: Tom's 4L60E build

You're welcome.
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Old 09-21-2020, 07:12 PM   #35
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Re: Tom's 4L60E build

Quote:
Originally Posted by clinebarger View Post

*****Your Accumulator Valve was stuck HARD in it's Bushing, I had a like new one with the same (DX) code, Was this thing "Thumping" into 2nd before it started slipping??
No, it worked perfectly until it slipped in 3rd gear accelerating on a freeway on ramp. I did put the b&m line pressure controller into its highest pressure setting at that point and drove it another month or so until I could afford a rebuild.
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Old 09-21-2020, 10:30 PM   #36
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Re: Tom's 4L60E build

Who knows when the valve stuck, I was just curious, But I don't think it was shrapnel from the pump as I could Clear It by working the valve back & forth.....I wasn't stuck fully closed either.

Finished it up this mourning with a GM filter & pan gasket, Has new O-rings & Clips in the Cooler Fittings, New Shift Shaft Seal, And the VSS Sensor got damaged somehow.....It got replaced with a used one out of my stock with a new O-ring.

You now have 2 magnets in the pan instead of 1.


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Old 09-25-2020, 09:30 PM   #37
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Re: Tom's 4L60E build

Clinebarger, This is far beyond cool and helpful!
I truly appreciate the highly technical and professional breakdown of this build.
Thanks for sharing this!, You also knocked it out of the park with the clear detailed
photos!!!!
Folks like you make this site so good! Thank you Sir !
All The Best
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Old 12-15-2020, 05:43 PM   #38
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Re: Tom's 4L60E build

So, a little update for anyone concerned. Finally have the trans in and truck driving again. Just got to 500miles on the unit. Works geat. I'm probably going to pull the pan and put the next heavier spring in for the 2nd gear shift but I'm going to wait another 500miles.

Some things that really made this a pleasant experience and I didn't expect:
- When I pulled the pan to drain the trans I only put like 4 bolts back in to keep the pan on for shipping, thinking I'd save Chris 30 seconds of work. It came back with all bolts installed.
-I also bought a new dipstick grommet, trans already had one installed.
- Shipped trans without any covers, got it back with all ports and shafts covered and/or sealed up.

All in all, I am extremely satisfied with my choice in builders. I've learned alot from my years reading Chris's posts and he filled all expectations.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle.
-98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes.
-02 Suburban 4x4: leveled front
-CBR600F4i, CBR600RR, CBR1000RR, and standup skis
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Old 12-15-2020, 11:33 PM   #39
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Re: Tom's 4L60E build

Thanks Tom, I put a lot of effort into these units & having a satisfied customer makes it all worth it.

You wanting to install the next heavier Accumulator Spring proves this system works.....As in, You can have a factory feeling 1-2 shift with the clamping force of a Vette Servo.
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Old 12-16-2020, 09:11 AM   #40
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Re: Tom's 4L60E build

awesome thread sir.

question, for a 'hopped up' 6.0L say cammed/head work, output 550-580hp at crank...can the 4L60 hold up long with work like you've done here?
Is finding a 4L65 give much advantage and a better choice?
or are both on borrowed time and just do an 80E

I have a lot of bad experiences with the 60 and 65E units, but I'm unsure if it is folks rebuilding them that just don't know the intricate details like you've demonstrated here, or just hardware limited and can't hold the power.

Thanks
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Old 12-16-2020, 12:10 PM   #41
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Re: Tom's 4L60E build

Here’s my thoughts on this since I have built my 60 to handle the turbo 5.3. My tranny has upgraded hard parts. Billet shafts, sprags, Sonnax 6 pinion planetary, blah, blah, blah. It’s basically a stage 5 spec’d tranny that many performance companies would label it as. It’s reliable to me and hasn’t given me any issues for years.

Many people hate on the 60 and say it’s horrible. I think they’re great and my tranny proves it. However, you’re absolutely on point, you need to know someone that builds them right.

What I found is that you have tranny assemblers and you have tranny builders. Assemblers go to YouTube and put parts where they go. Not hating on YouTubers, but believe me there are plenty of videos on there that shows 60 assembly tutorials. Builders understand circuits and know why parts are being modified and should be modified. Assemblers are many of the haters of the 60/65 because the video said it can handle 800 hp but failed after 10 miles.

If you’re a drop and go type of car guy, sure, go with an 80 and enjoy the truck. If you want a 60, get it built by a reputable builder, not assembler, and enjoy the truck. In the end, you’ll be happy no matter which direction you go.

I’ll finish with this, no bad feelings towards assemblers. Learning is the most important thing.

Mask up and wrench on...
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Old 12-16-2020, 02:25 PM   #42
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Re: Tom's 4L60E build

Great walk through of the process of rebuilding a 4l60e


Is it more cost effective to buy individual parts or buy a rebuild kit ?
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Old 12-16-2020, 06:04 PM   #43
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Re: Tom's 4L60E build

Quote:
Originally Posted by 71cadc10 View Post
awesome thread sir.

question, for a 'hopped up' 6.0L say cammed/head work, output 550-580hp at crank...can the 4L60 hold up long with work like you've done here?
This is what he considers a stock rebuild not a performance build. I was after longevity behind a basically stock vortec 350.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle.
-98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes.
-02 Suburban 4x4: leveled front
-CBR600F4i, CBR600RR, CBR1000RR, and standup skis
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Old 12-16-2020, 10:12 PM   #44
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Re: Tom's 4L60E build

Quote:
Originally Posted by gmc684x4 View Post
Great walk through of the process of rebuilding a 4l60e


Is it more cost effective to buy individual parts or buy a rebuild kit ?
I get asked this question A LOT

I do not buy kits, I spec every part & no such kit exist. Every builder has their own "recipe".
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Old 12-16-2020, 11:17 PM   #45
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Re: Tom's 4L60E build

Quote:
Originally Posted by 71cadc10 View Post
awesome thread sir.

question, for a 'hopped up' 6.0L say cammed/head work, output 550-580hp at crank...can the 4L60 hold up long with work like you've done here?
Is finding a 4L65 give much advantage and a better choice?
or are both on borrowed time and just do an 80E

I have a lot of bad experiences with the 60 and 65E units, but I'm unsure if it is folks rebuilding them that just don't know the intricate details like you've demonstrated here, or just hardware limited and can't hold the power.

Thanks
The short answer is....Yes, A 4L60E can be built to handle that power level (Roughly 600 RWTQ) in a heavier vehicle.
It's not horsepower that kills transmissions, It's Torque, RPM, Weight & Duty Cycle.

The 3-4 Clutch & Forward Sprag are the weakest links in this unit....

*A Sonnax HD shift valve & valve body mod will help support the Sprag with the Overrun Clutch, But you can't beat on it in D4/OD....Use D3.

*The 3-4 Clutch has several issues that need addressed, First being the timing between it & the 2-4 Band. Blocking the 2-3 valve inboard & sizing the 3-4 Signal, 3rd Clutch, & Band Release orifices correctly, Along with setting the 3-4 Clutch Clearance & 2-4 Band Clearance.

*The 7-Friction 3-4 set-up like I used in Tom's unit will handle some power IF you don't cycle it too much & get it hot. It's Dynamically limited!
Adding frictions doesn't help much if at all as you must either run thinner frictions or steels which shed LESS heat.
Bowing/Deflection of the backing plate just adds to the issue.

*With your goals....Either a Sonnax Smart Tech Input Drum or a 4L79 Severe Duty Drum will suffice, The only way to run more friction surface area without losing cooling mass while eliminating deflection.

*Output shafts break when shock loaded too many times, And can Spiral Fracture causing quite a bit of collateral damage in the process.

*A wide 2-4 Carbon/High Energy Band & Sonnax Super Hold 2nd & 4th servo pistons are highly recommended.

*I'm a firm believer in the Sonnax 2.84 ratio 6 Pinion Input Carrier after using a few of them, I believe it even helps with clutch longevity given it tightens the ratios.

*A good OE 4 pinion Output Carrier will be fine.

*TransGo high RPM Primer spring, .500 Boost Valve, High RPM Overrun Springs & Unbreakable Pump Rings are a must.

*I recommend a Sonnax Smart Shell (Reaction Sun Shell)



Depends on whether you want to spend $5,000 PLUS on a Severe Duty 4L60E or I can build you a 4L80E that will handle more power for $2,400.
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Old 12-17-2020, 09:35 AM   #46
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Re: Tom's 4L60E build

thanks for the great info....the last sentence sums it up well....the cost to do a 4L60 is over double what the 80 would take.

For me this means unless the vehicle is limited to a 4L60 for fit/originality/etc doesn't make sense.

this place is fairly local to me, and the root of many bad experiences with their level 2 and 3 stuff. I have put them in cars for folks and they don't last...I Don't have much else to compare it to.

https://www.performabuilt.com/produc...mission-4l60e/
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