Listen to this guy. Look at his tenure sitting right under his post count.

 

Lmao.

 

That is correct the 4L60 converter will not work on a 4L80, if I can help you in any way just give me a call.

Thank You,
"Mad Dog" Lou

Mad Dog Transmissions
Phone 770-781-0949
Fax 770-781-0969

Web: www.maddogtransmissions.com
Facebook: www.facebook.com/maddogtransmissions
Twitter: www.twitter.com/maddoglou
YouTube: www.youtube.com/maddogtransmissions

 

I had my 4l60 built by century when I had my trans am was putting down a little over 500 rwhp on a 150 shot and transmission held up like a champ no issues at all.