4L80E Discussion
Originally Posted by 1a-play
try to find an entire vehicle with a 4l80e- I bought a 93 1 ton van for 300 dollars from a company because the motor was bad- then sold the van to a junk yard for 400 after I removed the trans- the manual valve body was 190.00 and custom convertor for 690 before tcs went out of business. a pro ratchet was 170.00 and I extended my x-member myself- so all in all cheap for me.I'm going thru the trans right now before the season with blue 's and diod sprag- about 800 in parts but will take anything any of us can throw at it . it worked stock all last year without any problems. so if you shop around you can build it for cheap.
The manual valve body was converted by me with a transgo kit. It takes about 8 hours to do. No Biggy!!!!! You can use a stock shifter because it isn't a reverse pattern but I think it would be hard to shift the gears. You would have to manually shift up and down every gear. Yes, I do have a manual lock up switch for the converter. You can lock it in any gear. I lock it up in third when spraying. I don't have a digital camera. Hope that helps.
Originally Posted by 1a-play
The manual valve body was converted by me with a transgo kit. It takes about 8 hours to do. No Biggy!!!!! You can use a stock shifter because it isn't a reverse pattern but I think it would be hard to shift the gears. You would have to manually shift up and down every gear. Yes, I do have a manual lock up switch for the converter. You can lock it in any gear. I lock it up in third when spraying. I don't have a digital camera. Hope that helps.
Launching!
Joined: Nov 2001
Posts: 299
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From: Savannah, TN
Originally Posted by BigPlanTransAm
i dont know about a TH400 and drivability, isnt that a non lockup transmission? with a big stall youll probably be at 3500-4000rpm on the hwy even with the GV unit.
Last edited by iateyourcat; Jan 20, 2004 at 06:54 PM.
phil h , I didn't need to do anything to the pcm- but the last time I had my pcm programmed- they deleted the tranny codes so the check engine lite went off, but before that I ran fine but the lite was on- doesn't affect the motor.. the stock speed will plug right into the speed sensor on the back of the 4l80e the front one is a input the rear is the output- what plastic shims are you talking about?
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From: Southern Indiana
Originally Posted by monkeyboy
why not get the Rossler 4L60E? they are on the Lingenfelter Vette that ran 8s. 2600 bucks for the best 4L60E..not bad if you ask me
Are there certain years of 4L80's that would work best. What did they come in. My uncle owns a salvage yard...he could probably hook me up if i knew some of the vehicles they came in.
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Verdad Gallardo Pretty sure they started in 1990 and are still being put in the 2500 series trucks and other models also. You later model ones will have the LS1 bolt pattern but the early years will also bolt up.
Originally Posted by 1a-play
phil h , I didn't need to do anything to the pcm- but the last time I had my pcm programmed- they deleted the tranny codes so the check engine lite went off, but before that I ran fine but the lite was on- doesn't affect the motor.. the stock speed will plug right into the speed sensor on the back of the 4l80e the front one is a input the rear is the output- what plastic shims are you talking about?
TECH Regular
Joined: Jun 2002
Posts: 452
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From: Georgia
You guys make this sound really interesting since I am about to buy an auto this week or so. Where would i go about buying one BTW?
Also do they fit under the tunnel with no modifications needed and can I use my 6-speed cross member?
Decisions...Decisions
Also do they fit under the tunnel with no modifications needed and can I use my 6-speed cross member?
Decisions...Decisions
TECH Junkie
Joined: Mar 2002
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From: memphis tn
A 4L80E is about the same size as a TH400,it's only a fraction of an inch longer than a 4L60E but the pan extends past the stock mount location so clearance needs to be provided for the pan and the mounting pointing is about 6" further back.
so if one were to get a late model 4l80e, and they had the yank th400 adapter crossmember that allowded the use of the stock torque arm then they would be ok??
I may consider this, I just dont have all the cash right now to do it. but I think that I have a line on the tranny conversion kit with a th400 pretty cheap. the only problem is the guy said that his car is at like 6k @65 with 3.73 gears and a 3400 stall
thanks
ed
firebird455@onebox.com
I may consider this, I just dont have all the cash right now to do it. but I think that I have a line on the tranny conversion kit with a th400 pretty cheap. the only problem is the guy said that his car is at like 6k @65 with 3.73 gears and a 3400 stall
thanks
ed
firebird455@onebox.com
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From: Southern Indiana
So i will need a late model 4l80E, a new crossmember, a new torque converter, a seperate computer to control the transmission, and...what does it take to get the factory shifter to work, i really dont want to cut up my console. Can i use the factory flexplate (if it will fit will it be stong enough). Where can i get a converter, around 3600-4000stall, and what kind of price am i looking at.
TECH Junkie
Joined: Mar 2002
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From: memphis tn
Your factory shifter will work you need a 6.0HD flywheel,a crank spacer and a 4L80E nuetral switch with bracket.I modified my stock crossmember,removing about 1 1/2" of height and adding a 6" rear extension with a 1 1/2" riser for the mount.You can get a converter from Precision,Yank or TCI.My stock driveshaft fit with just the change of Yokes to a TH400 part.
Last edited by whitt1; Jan 20, 2004 at 11:53 PM.
