[Tigers] Tiger Differential

[Gary]

Stock rear end is NOT posi.  It is now called Dana44, same diff as a lot 
of 4x4 front as well as others.
A normal rear end shop can put posi in if someone didn't do yours before.
Axles, bearings, hubs are unique Tiger.
Stock is about 2450RPM at 60, way too fast unless you have a big cam IMHO.
Big carb, hopped up 289, you probably get 14mpg highway?  Ouch.
I have a stock 5.0L/T-5 wide ratio..  maybe 220HP, 14in wheels =1950RPM 
at 70.. NICE.  Like a modern car
MPG > 20 but  not sure..
Good luck,
Gary


On 11/16/2019 8:02 AM, Joel Martin via Tigers wrote:
>
> The manual shows that Tiger rear ends are:Salisbury hypoid ‘4.HA’ with 
> a 2.88 to 1 ratio.What does the 4.HA stand for?
>
> My understanding is these are posi traction meaning both wheels are 
> applying power.
>
> Those of you with 2.88 rear ratio gears, wide ratio 4 speed top loader 
> transmissions, what is your RPM’s in fourth at 50, 60,70 & 80 MPH?
>
> Those of you running other rear end rations, other factors the same, 
> what are your RPM’s at the same speed and what ratio?
>
> I like to drive my cars and just got back from a 1,263 mile 6 day trip 
> in my original owner 1973 MGB with 229,000 miles on the car.
>
> Things to consider:1966 MK1A with 289 HiPo motor with about 300 HP and 
> estimated 9.4.1 compression
>
> 600 cfm 4 barrel Holley carburetor
>
> Headers with 2.25” exhaust
>
> 15” wheels running 205\50 x 15 tires
>
> Wide ratio top loader 4 speed transmission
>
> Believe Salisbury posi rear end
>
> Closed, open, locked, posi, ratios – the list is endless.What I am 
> looking for is a very streetable around town and on the highway posi 
> rear end ratio that will work well with a good balance between 
> acceleration for fun and highway cruising.I am not there yet.  I have 
> the acceleration for fun part in place but not the highway cruising 
> (of course - avoid highways\interstate).
>
> Data means a lot regarding RPM’s at speeds between 50 to 80 mph.Those 
> of you who have switched ratios, please share your pros and cons.
>
> Thank you for your input.
>
> Regards
>
> Joel Martin
>
>
>
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