Stock 4l80 / LY6 w/ LSA ?’s
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I'm afraid that the answer is that all 4L80Es and miles are not created equally. The gears and metal components are probably okay, and I would hope that the bands, friction clutches and steels have life left in them, but with as much torque as a supercharged LSA can make you can turn you may not have enough pressure to keep it from slipping.
A Shift Kit that firms up your shifts and gives more line pressure may be a decent middle-ground to tearing down the transmission and spending $2000 on a rebuild.
https://www.summitracing.com/parts/trg-4l80e-hd2
This shift kit doesn't come with a filter, because filters are specific to your pan type.
Of course, Buy Once Cry Once is a decent motto. Do what your peace of mind and wallet will allow.
A Shift Kit that firms up your shifts and gives more line pressure may be a decent middle-ground to tearing down the transmission and spending $2000 on a rebuild.
https://www.summitracing.com/parts/trg-4l80e-hd2
This shift kit doesn't come with a filter, because filters are specific to your pan type.
Of course, Buy Once Cry Once is a decent motto. Do what your peace of mind and wallet will allow.
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Last edited by Jimbo1367; Nov 14, 2021 at 09:30 AM.
I sure as hell wouldn't be paying $900 for a used 80e. Even if I actually seen the vehicle it came out of knowing it had 80k on it. I just passed up a low 90k actually in the van, looks like it has good fluid in it for $250. It's worth that, but I don't need it to be a spare. You should be able to buy a working unit for $300. Do a dual feed mod, and start there.
A buddy of mine made 720whp through a stock 4L80 with only performance clutches and valve-body mods.
They come standard with a heavy duty drum and 34 element sprag but I think with used transmissions you're rolling the dice regardless....
They come standard with a heavy duty drum and 34 element sprag but I think with used transmissions you're rolling the dice regardless....
I sure as hell wouldn't be paying $900 for a used 80e. Even if I actually seen the vehicle it came out of knowing it had 80k on it. I just passed up a low 90k actually in the van, looks like it has good fluid in it for $250. It's worth that, but I don't need it to be a spare. You should be able to buy a working unit for $300. Do a dual feed mod, and start there.
I was having my TH400 built and talked him into letting my builder check it out before install and good thing he did.
My builder found all kinds of stuff wrong, dry clutches, torn seals that wouldn't hold air, dirt in the valve-body etc.
So in the end he ended up spending another $1,200 to have it done right.
I'd suggest you pay as much as you'd be willing if you were intending to have it rebuilt anyways.
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This guy on youtube seems to know his stuff, and when he breaks it down why his rebuild costs $2000 he proves that it has at least $1000 in parts in the transmission. The "$999" "rebuilt" transmissions are a joke.
Also, this guys shop, Precision Transmission, doesn't do carry-outs anymore, his shop installs the transmission and confirms that it is working correctly. People do the install wrong and burn up a good transmission instantly, and he got tired of people blaming him.
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Thread Starter
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That teanny is sold. So…… I’m in the market for a know good 4L80e. If you guys are willing to let me know of any, I’d appreciate it. If so, a PM would be the best way to communicate
thanks,
Jim
thanks,
Jim
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Verdad Gallardo Find yourself a low dollar core and have it refreshed locally by someone you trust with red clutches and valve-body mods to increase the line pressure and you'll be set.
Or if you can find one in a running donor vehicle you can test but even then I'd still wanna have it refreshed.
Or if you can find one in a running donor vehicle you can test but even then I'd still wanna have it refreshed.
Well and not to knock those guys but they really over build them and for good reason.
Lots of guys around here making 700-800whp through basic built 4L80E's.
I do a little research on rebuild kits too because if you aren't careful you'll end up close to the cost of a Jakes unit if you pay too much for the core.
Lots of guys around here making 700-800whp through basic built 4L80E's.
I do a little research on rebuild kits too because if you aren't careful you'll end up close to the cost of a Jakes unit if you pay too much for the core.
Thread Starter
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Yeah. I’ve seen that. Some people want $650 for a core. It’s very easy to run up the cost to a Jakes stg 2 or even a stage 3. Buying a B&M version is a huge crap shoot. It might work, it might not.
im still researching this now locally. A friend from here is letting me know when he finds stuff too
thanks gu
jim
im still researching this now locally. A friend from here is letting me know when he finds stuff too
thanks gu
jim
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I bought a gm supermatic 4l85e and I love it .
Ly6/ Whipple 2.9 @14lbs I payed $2700 from kegs but I think they have gone up . Not sure where u guys are from but on east coast 1k used is the norm . If you look , sometimes remans are available thru the bone yard
Some poor dude put in a reman , then totals the truck . But any decent 4l80 with a shift kit will be fine .
Ly6/ Whipple 2.9 @14lbs I payed $2700 from kegs but I think they have gone up . Not sure where u guys are from but on east coast 1k used is the norm . If you look , sometimes remans are available thru the bone yard
Some poor dude put in a reman , then totals the truck . But any decent 4l80 with a shift kit will be fine .
Thread Starter
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I thought about this. Jakes core charge is cheaper than anybody else’s core cost. Pay once. I have a buddy from work checking with his tranny guy.