Re: [Healeys] Rear End Question

[F Ronald Rader <f.ronald.rader@gmail.com>]

I have a five speed in my XK 150 with a final drive combo of 2.5.
I love it.
ron r

Sent from my iPhone

On Jun 1, 2012, at 4:19 PM, Rick Swain <rjswain@hotmail.com> wrote:

> I have a friend with a BJ8 who is converting his differential to a Lempert
> 3.545 gear set. I'm thinking of a conversion myself but I have a late (6
port)
> BN4 with different rear end and overdrive ratios. I believe a BJ8 has a 3.9
> rear end with a .82 overdrive ratio for an overall ratio in 4th overdrive
of
> 3.207. My BN4 has a 4.1 rear end with a .778 overdrive ratio for an overall
> ratio in 4th o/d of 3.19. With the new rear end, the BJ8 will have an
overall
> 4th o/d ratio of 2.9. If I were to put a 3.545 rear end in my car my 4th
o/d
> ratio would be 2.75. I don't think that would make for good drivability in
a
> more or less stock (except for a BJ8 cam) 100-Six. However, if I were to
use
> his 3.9 rear end, my new overall 4th o/d ratio would be 3.03. It's not the
> same as the BJ8 with the 3.545 rear end but better than my stock set up.
What
> do people with far more experience than I have think? Has anyone used a
3.545
> rear end in a 100-Six? How does it work?
> Thanks
> Rick Swainwww.classicmotorart.cafull-colour drawings of your car
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