406 gearbox

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smirnofff
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406 gearbox

Post by smirnofff »

does anyone know if it is possible to swap the 406 V6 manual gearbox for a 2.5td manual gearbox?
i wish to improve the gearing on my car to gain a higher top speed.
would it be better to switch to the automatic gearbox?
which gearbox has the longest final drive?
and which is the easiest to swap?
i am in germany for the forseable future and higher top speed is more important than acceleration (which i have plenty of)

grateful for any comments

Guy
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DHallworth
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Post by DHallworth »

if you put a diesel box into a petrol car will it not be all wrong?

A petrol would rev much harder, so it might end up cooking the gearbox, not sure though.

I know you couldn't put a petrol box in a diesel car because the ratios' are all wrong because the petrol revs higher.

Not sure.

David.
smirnofff
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Post by smirnofff »

diesel engined cars run at lower revs, but they still have to achieve a similar top speed. so if you attach a higher revving engine to a diesel gearbox the theory is that you will gain a great deal in top speed. the gearbox should easily handle the power as a comparable sized diesel engine gives much more torque.

the question is: will it fit?
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