4L80 opinions and suggestions

[DarkCry956]

Looks like I'll be forced to do the 4L80 swap sooner than I had planned. I've read great things about RPM, Jakes and Century.
Who do you suggest and why?
What would be the best transbrake?
What about the torque converter?
I won't be using a Circle D so it would be nice to keep that option out of this thread even though many if you have had great success.
Anyone with 1/4 mile passes with a 4L80 any regrets? What about daily driving?

[Mr. Nasty]

I did mine about a year ago. I have no regrets I hated the A6 hell you go 10' and you was in 2sec gear. Some don't like the long first gear with the 4l80 I love it. And in the 1/4 mile with the 3.91 rear gear made my best pass 10.57 @ 130.78 and the 60' not bad 1.53. I bought my harden parts from Jakes had some guys here in Tallahassee build it for me. I have had bad luck with mail order trans. If I had to buy one it would be from Jakes. Torque converter FTI their great to work with and I thank they have the best. As for driving with the 4L80 overdrive and lock up on the converter just as good as the stock trans

[jrpxxii]

Don't overlook RPM Transmissions as they build incredible stuff and stand behind it like no other company. I will not have any other trans in my car but RPM. RPM is very personable and they are at every race and willing to help 24/7. Don't know anything about Century but have heard good things about Jakes but RPM in my opinion is the best out there.

[mikepage0007]

you are in texas it appears..jakes also in texas..i am running jakes and so far it is strong.can,t go wrong with rpm either..also have not heard much about century.. there are a couple different 4l cases, try toi get a newer one.. they are slightly smaller in some places...we had to do some frame boxing to get it in there correctly, others have not...this is due to the year of the 4l case

[MANNYS2SS/RS]

Originally Posted by mikepage0007

you are in texas it appears..jakes also in texas..i am running jakes and so far it is strong.can,t go wrong with rpm either..also have not heard much about century.. there are a couple different 4l cases, try toi get a newer one.. they are slightly smaller in some places...we had to do some frame boxing to get it in there correctly, others have not...this is due to the year of the 4l case

Mike what else did you have to box, beside where the plug go's? I got a newer 2003 case, I am also trying to get all my parts. Still missing the converter, flex plate and the transmission computer, to start the install.

[Kelly@PCMofNC]

RPM is my go-to builder, not just for beefy 4L60/70s but for 4L80e swaps as well. Very happy with the results and driveability!

[MANNYS2SS/RS]

Originally Posted by Mr. Nasty

I did mine about a year ago. I have no regrets I hated the A6 hell you go 10' and you was in 2sec gear. Some don't like the long first gear with the 4l80 I love it. And in the 1/4 mile with the 3.91 rear gear made my best pass 10.57 @ 130.78 and the 60' not bad 1.53. I bought my harden parts from Jakes had some guys here in Tallahassee build it for me. I have had bad luck with mail order trans. If I had to buy one it would be from Jakes. Torque converter FTI their great to work with and I thank they have the best. As for driving with the 4L80 overdrive and lock up on the converter just as good as the stock trans

I also had a local friend build mine with all good parts. Is your FTI converter a single or multi disc?

[DarkCry956]

Originally Posted by Mr. Nasty

I did mine about a year ago. I have no regrets I hated the A6 hell you go 10' and you was in 2sec gear. Some don't like the long first gear with the 4l80 I love it. And in the 1/4 mile with the 3.91 rear gear made my best pass 10.57 @ 130.78 and the 60' not bad 1.53. I bought my harden parts from Jakes had some guys here in Tallahassee build it for me. I have had bad luck with mail order trans. If I had to buy one it would be from Jakes. Torque converter FTI their great to work with and I thank they have the best. As for driving with the 4L80 overdrive and lock up on the converter just as good as the stock trans

Thanks for your input. What setup do you have? Also like manny asked what converter do you have? Single or multidisk?

[DarkCry956]

Originally Posted by mikepage0007

you are in texas it appears..jakes also in texas..i am running jakes and so far it is strong.can,t go wrong with rpm either..also have not heard much about century.. there are a couple different 4l cases, try toi get a newer one.. they are slightly smaller in some places...we had to do some frame boxing to get it in there correctly, others have not...this is due to the year of the 4l case

What year core did you get? Id like to avoid all that boxing your talking about

[DarkCry956]

Originally Posted by MANNYS2SS/RS

Mike what else did you have to box, beside where the plug go's? I got a newer 2003 case, I am also trying to get all my parts. Still missing the converter, flex plate and the transmission computer, to start the install.

Hey manny let me know how your install is going. I have all the parts in order already besides the converter. I went with Century since my tuner suggested them and seems to be pretty happy with their products. He also recommended RPM but me being from Texas as is century I went with them. I went with their level 5 which Century feels pretty confident that it will and could hold anything I throw at it. I was also told PCM of NC has a very nice harness that makes the conversion a lot easier. Thats on order too so I'll see myself how it works out.

Only thing I'm on the fence about is getting a built rear now or keep my fingers crossed hoping nothing happens with my stock. I'll think about it a bit more so I can make a decision I won't regret when ordering a drive shaft

[MANNYS2SS/RS]

Originally Posted by DarkCry956

Hey manny let me know how your install is going. I have all the parts in order already besides the converter. I went with Century since my tuner suggested them and seems to be pretty happy with their products. He also recommended RPM but me being from Texas as is century I went with them. I went with their level 5 which Century feels pretty confident that it will and could hold anything I throw at it. I was also told PCM of NC has a very nice harness that makes the conversion a lot easier. Thats on order too so I'll see myself how it works out.

Only thing I'm on the fence about is getting a built rear now or keep my fingers crossed hoping nothing happens with my stock. I'll think about it a bit more so I can make a decision I won't regret when ordering a drive shaft

Yeah RPM, Jake's, Century, Rossler are all great transmission companies. But I also wanted somebody local to me. Just incase something happen, I could have it fixed without having to ship it. My wife took some of my funds so the converter and controller have to wait a little longer. Now I have a little time to figure out which converter to get. Let me know how that harness works out for you?

[DarkCry956]

I'll be going with FTI I'm just debating on single or multidisk.

[H-E]

We use RPM for all our cars including our record holding GTO with the 4l80.We also us3 the FTI. Converter s...If we can help you out with anything including your rear let us know.

[Mr. Nasty]

I used a 96 case had to box for plug and massage right side to fit. FTI 3000 stall multidisc with lock up. Hey the PCM harness is the way to go no stand alone unit need with trans. I thank you want a 96 or older for case bolts in better. Also running stock rear and axles with 3.91 gear and slicks cutting mid 1.50 and low 1.60 60'. I'll run the stock diff until it blows. Don't wont to add weight I just cut it down to 3760lb from 4120lb