Yank 4L80E..conversion
Safety Car
Joined: Apr 2004
Posts: 4,097
Likes: 10
From: East Coast
Any updates Tom? Lots of interest here including myself. With all of the trouble I went through recently installing a TH400 in the rear of a C5, once confirmed that Yanks 4L80E with its new bellhousing will fit without modifying the tunnel I will be calling Mike. I am building my own personal C5 TT right now with lots up my sleeve and would love to have the 4L80E and will NOT cut up my car for personal reasons. I just can not for the life of me understand how this will fit without modifying the tunnel even though being repeatibly told that it will. (Please prove my mind wrong and show us those pics)
It's not physically possible to install the 4L80E ( which is larger/heavier than a t-400) without modifying the rear of the tunnel , I don't care what Yank says , until I see pics ( which would be hard to tell anyway ) I don't believe it , the trans is too big . My RPM 4L80 conversion should be running in a few weeks , the trans has been in the car since March , and I had other issues to deal with , ( cracked cracked C5R block ) but it's finally coming together . I wish Tom luck on his install and good luck with the new trans .
Last edited by STEALTH 99 C5; Aug 29, 2007 at 11:48 PM.
Racer
Joined: Nov 2003
Posts: 283
Likes: 2
From: Orlando Fl
FWIW
I sold my Vette and went back to racing an F body but the first thing I did was order the best 4L80E available.
That is from Gear Star / Yank, the total cost complete was 5500.00
This is a standard case, standard converter, with the only totally custom parts being a cross member and cpu for the trans. But there are over $ 2500 in billet and cryo treated hard parts in the trans. It is very easy to see an additional 4000-5000 in parts to make this live and work in a C5. The DTE brace alone is ~ 700, any custom billet bellhousing is an easy 1000, drive shaft is 500+, custom converter + 300min. thats an extra 2500.00 and im sure im missing some stuff.
Im now looking at getting another C5 hardtop or Z06 and the 4L80 will be mod 1. If you want to reliably play hard in the 700+rwhp range w/ an auto and OD with peace of mind the 80E is the only route regardless of what it takes. 10K is hard to swallow all @ once but most guys will easily spend it in 3 years w/ a 60E and 700+ rwhp.
I sold my Vette and went back to racing an F body but the first thing I did was order the best 4L80E available.
That is from Gear Star / Yank, the total cost complete was 5500.00
This is a standard case, standard converter, with the only totally custom parts being a cross member and cpu for the trans. But there are over $ 2500 in billet and cryo treated hard parts in the trans. It is very easy to see an additional 4000-5000 in parts to make this live and work in a C5. The DTE brace alone is ~ 700, any custom billet bellhousing is an easy 1000, drive shaft is 500+, custom converter + 300min. thats an extra 2500.00 and im sure im missing some stuff.
Im now looking at getting another C5 hardtop or Z06 and the 4L80 will be mod 1. If you want to reliably play hard in the 700+rwhp range w/ an auto and OD with peace of mind the 80E is the only route regardless of what it takes. 10K is hard to swallow all @ once but most guys will easily spend it in 3 years w/ a 60E and 700+ rwhp.
Le Mans Master
Joined: Feb 2004
Posts: 8,629
Likes: 16
From: York PA
I want my click back
