what tranny to use?
Thread Starter
Teching In
Joined: May 2011
Posts: 44
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what tranny to use? gonna be going with an LS2 based motor and the goal is around 12-1300hp. alot of people bolt them up to a built 4L80e but then i heard from other people how much of a power hog they are and they add alot of drag to the drive train. i definitely want an overdrive because it will be seeing alot of street miles. what do you guys think a good tranny is for alot of power but also street driven?
Thread Starter
Teching In
Joined: May 2011
Posts: 44
Likes: 0
are there differences in the older 4L80e's that bolted up to the old school style chevy motor and the 4L80e's that bolt up to the newer LSx motor? do those motors have the same bolt pattern for the trannys?
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
YES!
Either here or in another forum, someone with a dyno swapped from a 4L60E to a 4L80E. IIRC, he lost only 5HP on the wheels at about 500HP total. So 1%.
Obviously you cannot even consider a 4L60E, but this shows that a 4L80E does not lose much more power than a much small (and delicate) trans.
Either here or in another forum, someone with a dyno swapped from a 4L60E to a 4L80E. IIRC, he lost only 5HP on the wheels at about 500HP total. So 1%.
Obviously you cannot even consider a 4L60E, but this shows that a 4L80E does not lose much more power than a much small (and delicate) trans.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
There are a bunch of threads on that very question, including this one:
https://ls1tech.com/forums/automatic...-old-80es.html
https://ls1tech.com/forums/automatic...-old-80es.html
Trending Topics
YES!
Either here or in another forum, someone with a dyno swapped from a 4L60E to a 4L80E. IIRC, he lost only 5HP on the wheels at about 500HP total. So 1%.
Obviously you cannot even consider a 4L60E, but this shows that a 4L80E does not lose much more power than a much small (and delicate) trans.
Either here or in another forum, someone with a dyno swapped from a 4L60E to a 4L80E. IIRC, he lost only 5HP on the wheels at about 500HP total. So 1%.
Obviously you cannot even consider a 4L60E, but this shows that a 4L80E does not lose much more power than a much small (and delicate) trans.
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