Cost of 4l60E upgrades to hold.......?
Just wondering how much local places charge to upgrade 4l60E transmissions and what work they actually do? I am contemplating having a local shop upgrade my stock 4l60E to handle 600HP and I need some comparisons.
Thanks

It will take a pretty stout 4l60e to handle "600 hp easily". I dont believe anyone can build one to handle 600 hp easily for $1295. I would ask for a list of everything in the build. I would contact someone that is well known for building strong 4l60e's. Right now FLT has a free shipping deal going on, and these guys know how to build a 4l60e to handle punishment.
Whats is it that keeps breaking in a 4l60e? It doesn't seem to be any hard parts that is the common issue with these trans. The trans sliping becuz the clutches are toast is what i normally read on here so that is what needs to be addressed in a adequate 4l build.
Also, the sun shell, input shaft, amybe even the planetary gears could be swapped out from a 65e and dropped into your 60e. I have a 65e from factory so i got lucky, i guess...
So, keep that in mind. I have toasted my trans twice alredy with the new motor, the first time EVERYTHING in the trans just got warped...i mean everything down to the 1st/reverse clutch. it just let go one night at 12 in the morning!!
Look aroun here for the sponors that are producing these trans. Make a few calls and see if your local guys does seem to know what he is doing.
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Ok, here is the breakdown of parts included in the upgraded transmission for $1295:
8 Friction 3-4 clutch assembly w/Kolene steel plates
High Energy band
10 vane pump w/.500 boost valve (13 vane pumps have lower volume)
New tall low roller clutch
6 low reverse frictions w/Kolene steels
'The Beast' sun shell
New 29 element sprag
New Torrington bearings
New bushings
Super Servo w/superior 4th piston
Transgo shift kit & new accumulator pistons
New 5 pinion low planetary gearset
Dyno-tested
We carefully check band pin legth, unit end play, and clutch clearances.
How does it sound?
The Best V8 Stories One Small Block at Time
8 Friction 3-4 clutch assembly w/Kolene steel plates
High Energy band
10 vane pump w/.500 boost valve (13 vane pumps have lower volume)
New tall low roller clutch
6 low reverse frictions w/Kolene steels
'The Beast' sun shell
New 29 element sprag
New Torrington bearings
New bushings
Super Servo w/superior 4th piston
Transgo shift kit & new accumulator pistons
New 5 pinion low planetary gearset
Dyno-tested
We carefully check band pin legth, unit end play, and clutch clearances.
How does it sound?
www.finishlinetrans.com
www.finishlinetrans.com


Thats the first place to call! 1-630-350-7776 IMO...
