6L80/90 options...?
Thread Starter
Registered User
Joined: Nov 2019
Posts: 7
Likes: 0
6L80/90 options...? Need to know, is there a way to set up this type of trans to take off only in second gear?
For the application I'm using (behind a Model B engine, 1932 4-cyl.) It's built for performance. The original Model A/B trans has 3.11 first gear, this is too tight for a performance- built "B" engine.
If I use a 4.11, this will be a perfect trans gear selection for my car.
And, can I modify the trans to run without a computer?
For the application I'm using (behind a Model B engine, 1932 4-cyl.) It's built for performance. The original Model A/B trans has 3.11 first gear, this is too tight for a performance- built "B" engine.
If I use a 4.11, this will be a perfect trans gear selection for my car.
And, can I modify the trans to run without a computer?
Thread Starter
Registered User
Joined: Nov 2019
Posts: 7
Likes: 0
Btw, the stock B engine made 50 hp, mine is going to pushing between 150 and 200 hp. In a 2200lb car, it will move nicely with the two OD gears of the 6L80/90!
These engines typically make their power down in low Rpm, but this one has a performance cam optimized for 1600-3000 rpm, but will go higher if needed. Redline is just over 4,000 rpm.
These engines typically make their power down in low Rpm, but this one has a performance cam optimized for 1600-3000 rpm, but will go higher if needed. Redline is just over 4,000 rpm.
Last edited by Eli McCrae; Nov 3, 2019 at 03:44 AM. Reason: misspelling
Thread Starter
Registered User
Joined: Nov 2019
Posts: 7
Likes: 0
Also, forgot to mention that age and life has made it my better interest to run an automatic in my rig, lol.
It would be much easier to run a suitable manual trans. Thanks for any suggestions in advance.
It would be much easier to run a suitable manual trans. Thanks for any suggestions in advance.
TECH Junkie
Joined: Jun 2008
Posts: 3,202
Likes: 1,390
From: Nitro Alley
Need to know, is there a way to set up this type of trans to take off only in second gear?
For the application I'm using (behind a Model B engine, 1932 4-cyl.) It's built for performance. The original Model A/B trans has 3.11 first gear, this is too tight for a performance- built "B" engine.
If I use a 4.11, this will be a perfect trans gear selection for my car.
And, can I modify the trans to run without a computer?
For the application I'm using (behind a Model B engine, 1932 4-cyl.) It's built for performance. The original Model A/B trans has 3.11 first gear, this is too tight for a performance- built "B" engine.
If I use a 4.11, this will be a perfect trans gear selection for my car.
And, can I modify the trans to run without a computer?
These transmissions use a computer (TCM) inside the case attached to the valve-body.
Aftermarket standalone transmission control modules (computers) could be used to operate the 6L transmission in your application.
However, you would have to find someone to write a program for you... as well as integrate some sensors to your engine.
At that point the transmission could be configured to not use first gear...
Second gear being a 2.37:1 ratio. lets call it 2.4.
I would just go with a THM200-4R transmission instead. It has a 2.7 first gear... the difference between 2.4 and 2.7 is not really noticeable (especially with taller ring and pinion gear sets).
The THM200-4R has the same approximate over-drive gear ratio...(0.67:1 = 200-4R and 0.67:1 = 6L transmission).
The THM200-4R also is not a computer controlled transmission.
Seems like it meets everything you said you were looking for.
I see no need to over complicate things by having to go with aftermarket standalone control modules and custom written software; when a THM200-4R is very similar in terms of what you were looking for in the 6L transmissions.
Last edited by vorteciroc; Nov 4, 2019 at 07:54 PM.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
no, that trans cannot be made to run non electronic.
Why on earth would you want to take off in 2nd gear? when a camaro that has 500+hp takes off just fine in 1st, i think your little 200hp 4 cylinder will be just fine.
The 6L family of transmissions currently have no options available to run without a computer.
These transmissions use a computer (TCM) inside the case attached to the valve-body.
Aftermarket standalone transmission control modules (computers) could be used to operate the 6L transmission in your application.
However, you would have to find someone to write a program for you... as well as integrate some sensors to your engine.
At that point the transmission could be configured to not use first gear...
Second gear being a 2.37:1 ratio. lets call it 2.4.
I would just go with a THM200-4R transmission instead. It has a 2.7 first gear... the difference between 2.4 and 2.7 is not really noticeable (especially with taller ring and pinion gear sets).
The THM200-4R has the same approximate over-drive gear ratio...(0.67:1 = 200-4R and 0.67:1 = 6L transmission).
The THM200-4R also is not a computer controlled transmission.
Seems like it meets everything you said you were looking for.
I see no need to over complicate things by having to go with aftermarket standalone control modules and custom written software; when a THM200-4R is very similar in terms of what you were looking for in the 6L transmissions.
These transmissions use a computer (TCM) inside the case attached to the valve-body.
Aftermarket standalone transmission control modules (computers) could be used to operate the 6L transmission in your application.
However, you would have to find someone to write a program for you... as well as integrate some sensors to your engine.
At that point the transmission could be configured to not use first gear...
Second gear being a 2.37:1 ratio. lets call it 2.4.
I would just go with a THM200-4R transmission instead. It has a 2.7 first gear... the difference between 2.4 and 2.7 is not really noticeable (especially with taller ring and pinion gear sets).
The THM200-4R has the same approximate over-drive gear ratio...(0.67:1 = 200-4R and 0.67:1 = 6L transmission).
The THM200-4R also is not a computer controlled transmission.
Seems like it meets everything you said you were looking for.
I see no need to over complicate things by having to go with aftermarket standalone control modules and custom written software; when a THM200-4R is very similar in terms of what you were looking for in the 6L transmissions.
I would listen to this advice.
Thread Starter
Registered User
Joined: Nov 2019
Posts: 7
Likes: 0
Kfxguy- 2nd gear- because first gear would be 4 to 1 with that trans.
My stock 1st gear ratio is already too low @ 3:11.
Does that make sense to you now?
With a 4.11 rearend (mine...), this would make those two OD's in the 6L just great!
But I bet you aren't smart enough to figure that out. Just smart enough to pick on a new poster. How brilliant!!
I would never have expected that...lol
My stock 1st gear ratio is already too low @ 3:11.
Does that make sense to you now?
With a 4.11 rearend (mine...), this would make those two OD's in the 6L just great!
But I bet you aren't smart enough to figure that out. Just smart enough to pick on a new poster. How brilliant!!
I would never have expected that...lol
Last edited by Eli McCrae; Nov 6, 2019 at 07:09 PM.
TECH Junkie
Joined: Dec 2012
Posts: 3,614
Likes: 1,326
From: Iowa
Kfxguy- 2nd gear- because first gear would be 4 to 1 with that trans.
My stock 1st gear ratio is already too low @ 3:11.
Does that make sense to you now?
With a 4.11 rearend (mine...), this would make those two OD's in the 6L just great!
But I bet you aren't smart enough to figure that out. Just smart enough to pick on a new poster. How brilliant!!
I would never have expected that...lol
My stock 1st gear ratio is already too low @ 3:11.
Does that make sense to you now?
With a 4.11 rearend (mine...), this would make those two OD's in the 6L just great!
But I bet you aren't smart enough to figure that out. Just smart enough to pick on a new poster. How brilliant!!
I would never have expected that...lol
Kfxguy- 2nd gear- because first gear would be 4 to 1 with that trans.
My stock 1st gear ratio is already too low @ 3:11.
Does that make sense to you now?
With a 4.11 rearend (mine...), this would make those two OD's in the 6L just great!
But I bet you aren't smart enough to figure that out. Just smart enough to pick on a new poster. How brilliant!!
I would never have expected that...lol
My stock 1st gear ratio is already too low @ 3:11.
Does that make sense to you now?
With a 4.11 rearend (mine...), this would make those two OD's in the 6L just great!
But I bet you aren't smart enough to figure that out. Just smart enough to pick on a new poster. How brilliant!!
I would never have expected that...lol
Thread Starter
Registered User
Joined: Nov 2019
Posts: 7
Likes: 0
And you are right, my stay will be short lived here. You and your "friendly, helpful minions" are the reason. It's not like I'm a punk kid, I'm 55 and been through more crap than you know. So, dog off...It's pretty lame when a new man comes here in peace, expecting advice and is met with instant juvenile delinquent-style harassment. And then you blame me for giving it back. Try going to a local bar and bring that crap attitude, I dare you!. I'd love to see how that works for you.
And what a real man you are, wishing someone bad luck. You are a *****. I'm gone... At least I'm not going to wish you bad luck, takes a callous bastard to do that. You'll get what you deserve in life, guaranteed. And I didn't come here insulting anyone's "dumb project" either. That's low class trash.
For someones whose "been through more than you know", you have pretty thin skin. Your first response on here was:
Don't be so sensitive. You asked a silly question, received multiple replies stating what to do instead, and cried about it.
Don't be so sensitive. You asked a silly question, received multiple replies stating what to do instead, and cried about it.
Exactly. And then he said “eff you” to the guy above. It was deleted but I saw it in my email. That wasn’t juvenile? He deserved my reply for that.
Now acts like he's so high class and you should go to a bar after HE dropping the F Bomb on another member on here 
Get out of here with that crap. 
