suitable gearbox for 1.7 diesel

[rubybus]

i have a 1990 t25 1.7 diesel with asp 5 speed iwish to replace the gearbox with ahigher final drive boxi i have the brickyard gearbox data, so would someone please help me urgently towards the best alternative thanks as im going back to france next week. ray h

[ringo]

what are you expecting?

With the 4 speed box I cruised at 65 and got great mpg.

Any more higher top gear than that and you will be constantly changing down to a lower gear.

Ringo

[oldiguana]

ah duck,ah dunna think the 17 is goin to break orbit no matter what box its draggin.....best av a look at the gear ratio chart on brickwerks tho if your not convinced n compare gearbox codes

[caveman]

what are you expecting?

With the 4 speed box I cruised at 65 and got great mpg.

Any more higher top gear than that and you will be constantly changing down to a lower gear.

Ringo

I don't know if you have a tach, or the transmission has been replaced, but with my 5 speed, at 55 mph the motor is turning 3600 rpm. I have only gone 65 a couple times trying [the operative word here is trying] to pass someone who, incrediably was going slower than me.
Rubybus, most people find a trans from an Aircooled model, They have tolerably taller gearing.

[rubybus]

Many thanks for your replies I have aquired a box from an air cooled with a 4.86 final drive so that should do the trick.