Transmission Question
#1
#2
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The 4 speed 4L80E was introduced along with the 6 litre V12s.....circa 1994 on the XJS. Someone here will know that exact change point. None of the 5.3 V12 used it.
The 4L80E is a TH400 with the addition of and o'drive 4th gear and electric shifting. The primary advantage is the o'drive 4th gear allows more agressive differential gearing, 3.54 versus 2.88.
That 3.54 gearing really improves the performance of the car. The extra power of the 6.0 engine doesn't hurt, either
Cheers
DD
The 4L80E is a TH400 with the addition of and o'drive 4th gear and electric shifting. The primary advantage is the o'drive 4th gear allows more agressive differential gearing, 3.54 versus 2.88.
That 3.54 gearing really improves the performance of the car. The extra power of the 6.0 engine doesn't hurt, either
Cheers
DD
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barondess (08-28-2014)
#3
The standard (as opposed to XJR-S) 6 litre came in with the introduction of the big plastic bumpers. This was at VIN 1881105 which was in April 1993. All the 6 litre XJS from this point use the 4L80E
So if you get a 4L80E, you also get a later 6 litre XJS which (just in my opinion!) is a better car anyway.
Paul
So if you get a 4L80E, you also get a later 6 litre XJS which (just in my opinion!) is a better car anyway.
Paul
The following users liked this post:
barondess (08-28-2014)
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