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#1058228 - 07/12/18 01:36 PM Swapping to a 4l80e questions  
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meanss87 Offline
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Bensalem PA
Right now I have a built 200-4r that I've been having problems with. I'm considering selling it and just getting a 4L80 and being done with it. I have a 420HP 383 thats putting out around 450 ft lbs of torque. What has to be done to swap in this trans? Do I need to do anything special to the trans itself, from what I hear they are pretty stout in stock form. I know i need an electronic controller, and I would assume the drive shaft would be shortened. But what else am I going to encounter?

Thanks.

#1058233 - 07/12/18 02:37 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
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MC96 Offline
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St. Johns MI
Transgo HD2 shift kit.

Slip yoke is 32 spline not 27.

Converters are somewhat pricy.

The next thing to go (from what Ive researched, not an expert) is the input shaft but thats at the 1000hp or so mark


86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1058276 - 07/17/18 02:52 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
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spacemanspif Offline
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Swedesboro, NJ
You can run a black box or build your own that gives you a manual valve body with no work. I’m rubbing a Jakes unit, Rossler makes one too, and there are vids on youtube on how to make one yourself. Converter lockup is retained as well.

If you get a junk yard trans get the slip yoke with it. Stock converter sucks and stalls at like 1,200 rpm, expect to pay around $1,000 for a new high stall.


-Mike

F-body bucket seats, camaro console, carb'd 5.3/4L80E swap

Fastest time to date: 13.671 @ 103.79
Best r/t: 0.007 I got lucky smile

Killed a few cones too

#1058366 - 07/25/18 02:48 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
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Kawaiikeno Offline
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Vassar,Mi
I've been working up the costs of this swap for the last few months I have it in an excel file I'd be glad to email you a copy if you pm me your email address it looses a lot of formatting but you get the idea
Since I started adding costs up I've started leaning to a th400 with a gear vendors overdrive unit

Source Part # Cost Quanity Notes

Transmission core ?
Rebuild kit $300.00
34 element sprag $200.00 needed if using an older 4l80e
Rebuild labor $300.00
Torque converter $1,000.00 2800-3000 stall
cooler line adapters -6AN x 1/4NPSM 4L80E GM transmission oil cooler 90 degree Banjo fittings USA $45.00
Transmission yoke  Sonnax, Sku: T3-3-2431CBHP $150.00 same as TH400
Crossmember Time and materials
Fluid dex 3 or above $25.00 gallon same as TH400
Cleaning
Misc parts
shifter cable modification time and materials need pan bracket
speedometer housing 4L80E Mechanical Speedometer Tail Housing and Speedometer Gears $625.00
optional to use stock speedometer
Transmission controller EZ-TCU TCI 30282 EZ-TCU  $600.00 others available
throttle position sensor $150.00
Total cost $3,420.00

I'm sure money can be saved along the way but this is what I came up with to have the same functionally as we have now.
Mike


Daughter's 1984 Monte Carlo SS
Car Craft Magazine Humble Pie engine build
200-4r trans.
8.5" 4:10 Grand National rearend
[Linked Image]
#1058367 - 07/25/18 02:52 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
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Kawaiikeno Offline
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Kawaiikeno  Offline
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Vassar,Mi
forgot to add having driveshaft shortened or a new one
Mike


Daughter's 1984 Monte Carlo SS
Car Craft Magazine Humble Pie engine build
200-4r trans.
8.5" 4:10 Grand National rearend
[Linked Image]
#1058375 - 07/25/18 05:37 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
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meanss87 Offline
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meanss87  Offline
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Bensalem PA
The driveshaft is my biggest concern, along with the fact my car is a column shift. Is there a straight up swap out one or is it a custom job?

Last edited by meanss87; 07/25/18 05:38 PM.
#1058404 - 07/29/18 01:59 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
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spacemanspif Offline
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Swedesboro, NJ
Probably best to measure and order one for the drive shaft so you know you are getting a straight and balanced shaft.

I ran factory column shift on my 80e for a while. Used all Monte stuff beucase the linkage bolts right to the shifter rod on the 80e. Only problem is all that stuff gets in the way of tucking the exhaust up tight to the floor. There are cable adapters available aftermarket too.


-Mike

F-body bucket seats, camaro console, carb'd 5.3/4L80E swap

Fastest time to date: 13.671 @ 103.79
Best r/t: 0.007 I got lucky smile

Killed a few cones too

#1058600 - 08/14/18 12:49 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
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Kawaiikeno Offline
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Kawaiikeno  Offline
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Vassar,Mi
How are you making out with your swap?
I for one would like to hear about any other issues or things you've ran into
Mike


Daughter's 1984 Monte Carlo SS
Car Craft Magazine Humble Pie engine build
200-4r trans.
8.5" 4:10 Grand National rearend
[Linked Image]
#1058690 - 08/20/18 03:57 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
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84LS1T56SS Offline
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Central, Arkansas
You don't have to spend $625 for the tail housing and gears. Get the box from Abbot Tach that will drive the speedometer from the VSS out put signal. It's around $300. Just set the switches for 4000 pulse per mile and your speedo will work perfect.



85 MCSS, 02 5.3/4L60E stock daily driver,84 MCSS, Another stock 5.3/60E.
#1058712 - 08/21/18 08:47 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
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Kawaiikeno Offline
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Kawaiikeno  Offline
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Vassar,Mi
Cable X from Abbott-tach.com I like it! I'd like to know what the expected life is and hear from people who are using it along with any noise or mounting issues because of the size 4.75" x 3.5" x 2.25 it doesn't look like it's water proof so under dash or maybe under the seat mounting would work.
At half the price if a tail housing I'd give it a good look and will update my file to include it
Mike


Daughter's 1984 Monte Carlo SS
Car Craft Magazine Humble Pie engine build
200-4r trans.
8.5" 4:10 Grand National rearend
[Linked Image]
#1058721 - 08/22/18 03:51 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
Joined: Apr 2011
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Hunter79764 Offline
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Grand Prairie, Tx
Another option is to replace your stock speedo with a unit from something like an '88 Blazer. There was a How-to thread a while back. The needle and face is very similar, but the guts are electronic instead of mechanical. You might need to "Translate" the transmission VSS to a speedometer-friendly Pulse per Mile signal, unless you are running an ECU or TCU that gives an appropriate output.


Sometimes you just need a bigger hammer...

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1058727 - 08/23/18 03:32 AM Re: Swapping to a 4l80e questions [Re: Hunter79764]  
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ChasUno Offline
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Bradenton, FL
IIRC, the same guy that swapped in the Blazer speedo revised it later on by then combining the Blazer speedo unit with the Monte SS face plate and needle. Looked totally stock, and had all the benefits of an electronic speedo.

Last edited by ChasUno; 08/23/18 03:33 AM.

1986 Monte Carlo SS

[Linked Image]
#1058746 - 08/23/18 08:05 PM Re: Swapping to a 4l80e questions [Re: meanss87]  
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Kawaiikeno Offline
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Kawaiikeno  Offline
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Vassar,Mi
I've never been a big fan of spending countless hours trying to jerry rig something together just to save a few hundred dollars.
Besides she won't even let me add a aftermarket gauge the only thing that's not 100% original in the interior is the console hinge.
Just using the math it's a lot cheaper to keep the 200-4r even if it means spending $3500.on a mostly billet parts one.
Mike


Daughter's 1984 Monte Carlo SS
Car Craft Magazine Humble Pie engine build
200-4r trans.
8.5" 4:10 Grand National rearend
[Linked Image]
#1058895 - 09/01/18 05:24 PM Re: Swapping to a 4l80e questions [Re: Kawaiikeno]  
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tedgley Offline
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Covington, KY
Originally Posted by Kawaiikeno
I've never been a big fan of spending countless hours trying to jerry rig something together just to save a few hundred dollars.
Besides she won't even let me add a aftermarket gauge the only thing that's not 100% original in the interior is the console hinge.
Just using the math it's a lot cheaper to keep the 200-4r even if it means spending $3500.on a mostly billet parts one.
Mike


X2

Why are you not considering just fixing the problem with the 200-4R? I missed where you even say what is wrong with it.

#1058969 - 09/05/18 04:37 PM Re: Swapping to a 4l80e questions [Re: tedgley]  
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meanss87 Offline
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meanss87  Offline
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Bensalem PA
Originally Posted by tedgley
Originally Posted by Kawaiikeno
I've never been a big fan of spending countless hours trying to jerry-rig something together just to save a few hundred dollars.
Besides she won't even let me add an aftermarket gauge the only thing that's not 100% original in the interior is the console hinge.
Just using the math it's a lot cheaper to keep the 200-4r even if it means spending $3500.on a mostly billet parts one.
Mike


X2

Why are you not considering just fixing the problem with the 200-4R? I missed where you even say what is wrong with it.




So here's the deal. I'm on my third transmission from a reputable builder. (technically second, 1st one had 2 separate issues, now I have a newly rebuilt unit) I will not mention the shop's name, their support has been top notch, they've handled every issue. I can't complain about that aspect....but I've still had to drop it out of the car and send it away for repair two times for issues not being my fault.. Having to pull it out of the car and install it (car has maybe 1000 miles on it since I got it on the road) has just flat out worn me out with this setup. The car is a 420hp/450TQ setup so its not too crazy. The transmission is also very loud rattling under acceleration, which I've been told is normal for a performance 200r4 transmission. I just don't have the confidence in it after the reinstall of this new one that I had when I first purchased it. I want something in there that I can just install and be done with it.

My thought was going to either a 4l80e, do to how indestructible they pretty much are stock....and its electronic...so no more tv cable to futz with. Not that that's difficult, but it takes the time of getting it set up...checking pressures and plunger measurements and whatnot out of the equation).
OR
4L60e was also a thought, but I've read a lot of negative stuff about it.

The biggest drawbacks for me were the drive shaft needed, and the column shift bolting up.

#1058985 - 09/07/18 05:03 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
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Buick Runner Offline
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Buick Runner  Offline
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Dharma station 1 the Hydra
I thought with the bigger, newer transmissions, you had to expand the trans tunnel so it fits in a G body?

At this rate, I would try to find another shop first. Sounds like they took shortcuts or do not really know what they are doing.

Last edited by Buick Runner; 09/07/18 05:05 AM.

SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear.

2008 ex NPS P71 Crown Victoria, cop motor, cop shocks, cop brakes.

Never argue with an idiot.
They will just drag you down to their level and beat you with experience.
#1059049 - 09/12/18 03:23 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
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spacemanspif Offline
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Swedesboro, NJ
4L80e fit in 3 Montes that I personally have been part of and no mods to the trans tunnel were needed. I’m running non-setback motor mount adapter plates with an iceman crossmember. Another friend is same mounts and a g-force cross member; and last friend has the whole Holley/hooker mounts, crossmember, headers. All 3 fit, I think on one the support brace was massaged for peace of mind near the rear fluid cooler line. Now they have low profile banjo fittings that they didn’t have when we did the swaps. But I have a 90 on an AN adapter and install/remove my lines without much trouble, little finicky but nothing crazy.

Buggiest mod needed with the 80 is cutting the dust shield “ears” off for header clearance.


-Mike

F-body bucket seats, camaro console, carb'd 5.3/4L80E swap

Fastest time to date: 13.671 @ 103.79
Best r/t: 0.007 I got lucky smile

Killed a few cones too


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