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#1058228 - 07/12/18 01:36 PM Swapping to a 4l80e questions  
Joined: Jan 2002
Posts: 90
meanss87 Offline
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meanss87  Offline
10+ Year
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Joined: Jan 2002
Posts: 90
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]  
Joined: Mar 2012
Posts: 647
MC96 Online content
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MC96  Online Content
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Joined: Mar 2012
Posts: 647
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 - Yesterday at 02:52 AM Re: Swapping to a 4l80e questions [Re: meanss87]  
Joined: Dec 2003
Posts: 1,530
spacemanspif Offline
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spacemanspif  Offline
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Joined: Dec 2003
Posts: 1,530
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


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