4L80E Swap?
4L80E Swap? Has anyone attempted a Heavy Duty 4L80E swap into an f-body? I believe it is the tranny in 2500 and 3500 HD pickups. I would think it would be a very stong tranny and could retain 4-speed capability, opposed to a TH400. Does anyone think this is even possible?
TECH Junkie
Joined: Mar 2002
Posts: 3,019
Likes: 0
From: memphis tn
The 4L80E is almost the same size as a TH400,you need a HD or 2500 flywheel,a converter,a crank spacer(from a 01 or later 6.0 in 2500),a modified crossmember(the pan extends past the 4L60E mount although the transmission is only a fraction of an inch longer),a 99 or later 4L80E(with LS1 bellhousing),a nuetral position switch with bracket,a TH400 driveshaft yoke and either a stand alone computer,custom PCM tuning with harness or a full manual valvebody.I think it's been done in an f-body before,my swap was done in a truck.
TECH Fanatic
Joined: Oct 2003
Posts: 1,514
Likes: 0
From: Long Island, NY
its something like 30-40 lbs heavier than a 4L60/4L65 and it causes a lot more parasitic loss from the increased mass....also its a BITCH to fit in an f-body tranny tunnel tho it can be done right....on top of that you get TH400 gear ratios which are dead as hell compared to L60/L65 ratios...
4L60E 4L80E
3.06 2.48
1.62 1.48
1.00 1.00
0.69 0.75
its JMO but i dont think its really worthwhile in an f-body.
4L60E 4L80E
3.06 2.48
1.62 1.48
1.00 1.00
0.69 0.75
its JMO but i dont think its really worthwhile in an f-body.
TECH Resident
Joined: Jul 2003
Posts: 858
Likes: 0
From: Everywhere
Teching In
Joined: Jan 2004
Posts: 1
Likes: 0
A few non LS1 cars using a 4L80E:
John Meaney's 1989 1,300hp Twin Turbo Corvette
http://www.erie.net/~gfalbert/johnm.htm
Jerry Myers' 1987 Twin Turbo Corvette
http://www.twinturbovette.net/Home1.htm
Monty's 1982 1200HP/1000TQ Twin Turbo SBC 427 Corvette
http://www.montygwilliams.com/
John Meaney's 1989 1,300hp Twin Turbo Corvette
http://www.erie.net/~gfalbert/johnm.htm
Jerry Myers' 1987 Twin Turbo Corvette
http://www.twinturbovette.net/Home1.htm
Monty's 1982 1200HP/1000TQ Twin Turbo SBC 427 Corvette
http://www.montygwilliams.com/
