Thinking of going 4L80

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Mar 25, 2008 | 09:23 PM

thechef

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From: milford,CT

Thinking of going 4L80

Well I been thinking of going with a 4L80 for awhile now, and i think it would be a good idea. It would allow me to go racing more and not worry about breaking like i do when i race with the M6 or i should say the lack of racing i have not done due to worring about breaking....

anyone gone from M6 to a auto and regretted it???
my car is not a race car but a nice street car so th400 is not a consideration

anyone know what parts i need for a swap????

opinions wanted

Mar 25, 2008 | 09:36 PM

NOZR1

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From: DE

I'm interested as well. Subscribing.

Mar 25, 2008 | 10:42 PM

Kenny H

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Mar 25, 2008 | 10:47 PM

$Black99T\A's Avatar$

Black99T\A

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Let me know If you sell your T56, Im doing the oppisite of you and ive been looking for a transmission

Mar 25, 2008 | 11:13 PM

josh2002-ws6

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I did the M6 to TH350 swap and have not regretted it at all. I do more racing with my car so it doesn't bother me that it is only a 3 speed now but love the auto because it is so consistent now.

Mar 26, 2008 | 05:25 AM

JL ws-6

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Chef this is something that I've been trying to get you to do or a year and a half now, and moreso after the last "event" your car saw.

It is THE perfect solution to your problems/concerns. A built 4l80 with a manual valve body will be fun, and tolerable on the street.

Good thing you still have that other center section with the 3.70's still LOL. That's the only thing I can see you possibly wanting to do, is put that back in the car. Not impossible, can be done without too much of a headache.

A 4l80is what mightymouse has in his car, and look @ what he's run since getting away from the stick. No way that car was going anywhere near 9.0 with a stick in it, nevermind on a 17 inch rim, now that car's impressive as hell, and doesn't break. I'm not saying this is your ticket to 9 second runs, but it will certainly make for a racable car that youc an drive and not break stuff, hell if he can get his 3700 lb car to trap over 150 that's got to be about 1000 hp to do that, at your power level that tranny with a little maintenance will never give you a problem, and you couls double your power level, and still have zero problems.

Do it... of all the mods you've done this will be the one that will put THE biggest smile on your face when you pull up to the timeslip booth, and you'll still be wearing that smile for days as you're driving all over creation with that car like you've done since the day you picked it up. (sans the last 5 months)

Mar 26, 2008 | 06:08 AM

thechef

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From: milford,CT

Kenny--thanks i will be reading that info for sure

JL- Yea the last track trip wasnt a big deal and it was a simple fix, taking the bumper off to get painted was the creation of the mess... but its painted now (last night) and will be on this weekend...I got someone coming for some old race parts i have had squirrled away for years and if they sell the 4l80 swap will be a REAL possibility soon...

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Mar 26, 2008 | 06:44 AM

DannoWS6

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From: Central MA

Actually FLT sells a nice 4l80E and it's costs almost the same as their 4l60E! Damn if they had that deal a year or so ago I would of went that route.

http://finishlinetrans.com/store/pro...products_id=33

Even a stock 4l80E with new clutches will take a massive beating.

Mar 26, 2008 | 07:15 AM

#10

JL ws-6

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Manual valve body will make it alot more fun though, and you can adjust shift points to track conditions easy enough. Plus chef's got a kit on his car, shift points n/a vs on the jug will be different, easier to just pull the lever at a different rpm then be changing the tune via laptop from oen run to the next.

Last edited by JL ws-6; Mar 26, 2008 at 07:21 AM.

Mar 26, 2008 | 07:48 AM

#11

DannoWS6

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From: Central MA

Quote:

Originally Posted by JL ws-6

Good point about the bottle, It's a tough call, plus for some reason the MVB's on the 4l80E's are like and extra $500. It will make your tuning life easier.

MightyMouse mentioned earlier runs an automatic valve body, w/ this gate shifter and he's got a brake on it. I'm guessing it's vacume modulated atleast but if it works for his car I'm sure it would work for mine.

I got a MVB in my 4l60E once by accident

granted it's not vac modulated but it did not shift like I thought it would. I would probably go with what the tranny builder/tuner recommends.

Maybe Don or somebody could chime in about shift points on n20, maybe their is a solution we are unaware of?

Mar 26, 2008 | 07:54 AM

#12

JL ws-6

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I know nitrous likes to be shifter earlier, usually will go faster that way as well because you're using more of the tq that you get with nitrous as well.

Mar 26, 2008 | 08:44 AM

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DannoWS6

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From: Central MA

Quote:

Originally Posted by JL ws-6

I know nitrous likes to be shifter earlier, usually will go faster that way as well because you're using more of the tq that you get with nitrous as well.

Yup, it's based on speed and rpm and can be a real PIA.
Just a converter swap will F it up for the reason you mentioned.

Mar 26, 2008 | 08:50 AM

#14

JL ws-6

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That's another thing, every converter is a little different and may require something else as well.

Manual valve body, much easier. Plus it's more fun

Mar 26, 2008 | 09:48 AM

#15

ATVracr

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Burbanman has be in the 8's with his N20 car and it has a 4L80.

Mar 26, 2008 | 12:28 PM

#16

thechef

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From: milford,CT

if/when i did this swap i doubt i would go manual valve body, yes its fun but it gets OLD on the street when you drive as much as i do, if it was a weekend only cruiser then maybe

Mar 26, 2008 | 12:38 PM

#17

JL ws-6

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The manual valve body gets old, but shifting a stock doesn't

Mar 26, 2008 | 12:38 PM

#18

JL ws-6

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Oh, call my cell I got a situation to ask ya about too

Mar 27, 2008 | 07:55 AM

#19

Mr. B

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Hughes makes a built 4L80E, I explored it for my Cobra (yes- it bolts up fine!) and I just haven't had a chance to call Hughes.

You guys have a hook in Hughes.. let us know what they say.

Mar 27, 2008 | 08:14 AM

#20

thechef

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From: milford,CT

Quote:

Originally Posted by Mr. B

Hughes makes a built 4L80E, I explored it for my Cobra (yes- it bolts up fine!) and I just haven't had a chance to call Hughes.

You guys have a hook in Hughes.. let us know what they say.

Yea Hughes does right by us, i will have to get with Sean and see about pricing, i dont quite have enough $$$ set aside just yet so im not in a rush, got to do the taxes this weekend and see how i make out