[Tigers] axle spline

[Mark Rense]

Thanks Gary for the clarifications. I bought a LSD from you a while back
and it worked out very well.

I found a 2.72:1 gear set out of ‘81 Corvette and modded it to fit the
Salisbury carrier. I also installed a WIDE RATIO Toploader. This
combination works perfectly with the full-roller stroked 289 that makes
over 370 HP.  The launches are quite spectacular yet I’m turning 2800 RPM
at 70.

My other Tiger has a 3.31:1 gear set and a standard close ratio Toploader.
The engine is a very free-spinning 289 tha doesnt mind turning 3500 at 70,
that’s still half of redline on this build. This car is a real treat on
tight twisty roads. The Hurst shifter is a great option.

To each his own.

Bugz

On Mon, Nov 18, 2019 at 9:22 AM Gary via Tigers <tigers at autox.team.net>
wrote:

> Dave,
>
> Stock Tigers came with a Salisbury rearend. Salisbury is the British
> subsidiary of Dana/Spicer Corp. These British units came in Sunbeam Tigers,
> Jag XKEs, AC Cobras and TVR Griffiths, and used 7/16" ring gear bolts and a
> 10 spline (coarse) pinion gear. The factory offered other LAT ratios of
> 3.07, 3.31, 3.54 and 3.73 for those units.
>
> The American version of the Dana 44 rearend uses 3/8" ring gear bolts and
> a 26 spline (fine) pinion gear. Most Tiger owners in the USA, who have
> upgrade to a positraction unit (limited-slip) and changed their rearend
> ratio to something other than the factory 2.88, have installed the American
> version with the 3/8" ring gear bolts and switch over to the fine spline
> input flange.
>
> If* y*ou changed back to 2.88s, you would have to find an original
> Salisbury posi unit (rare) or drill out an American unit for the 7/16" ting
> gear bolts and get a 10 spline input flange.
>
> In the 1980s Dana made Dane 44 2.72 rearend gears for Jeep Wagoneers,
> Cherokees, Grand Cherokees and C3 Corvettes. The 2.72 gears have 3/6" ring
> gear bolts and a fine spline pinion, and will bolt into any Tiger rearend
> that has the American differential.
>
> Since I sold you the posi unit in your car (2009), this is what I
> recommend. The 2.72 gears will bolt right up to your posi unit and you
> can use your existing fine spline pinion gear flange. Changing from 3.07s
> to 2.72s will give you a ~14% drop in rpms in 4th gear, ~300 rpms.
> However, your 1st gear will be taller, too, so do NOT run 2.72 gears with a
> close ratio transmission or you'll burn up your clutch in no time. 2.88
> gears are bad enough with a close ratio in 1st gear, so 2.72s will be worse.
>
> My other recommendation is to convert to a wide ratio transmission and install
> a 2.90 1st gear (from Dan William's Toploaders). This gives you a fabulous
> hole shot, while not impacting your 4th gear highway cruising. I have
> helped a bunch of Tiger owners convert to this setup and they all love it.
> It is the best of both worlds, short of a 5 speed, but at a fraction of the
> cost.
>
> Gary
>
>
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