Final Gears - Swappable?

[Orbit-Zzz]

Hey Guys,
I'm new to the FTO world. Have a 95 Mivec GPR (I think) with the 4 speed auto tranny and have tried searching to see if this is possible but couldn't find a proper answer.

Refering to this link http://www.mivec.co.uk/performancedata/index.htm is it possible to swap the final drive gear from the 5 speed auto / diff being 3.735 into the 4 speed which is 4.407?
Cheers,

[ZFL45H1]

First off welcome
Now u won't have a gpvr as where made 97 or after as for final drive I guess as long as u have the Same drive shaft sizes (as ftos have two different sizes with 25 spline and 27 spline) u should be right but I'm not sure on final drive but 100 percent about model of fto

[Taz]

The GP was the early model of the GPR zflash but im fairly certain all GP/GPR's were 5 speed?

[Vectose]

GP was the pre-facelift vR, but was only made in 1996.

[ZFL45H1]

I knew I shouldn't of wrote anything haha oh well that's my learning for the day just in time to

[spetz]

First off welcome
Now u won't have a gpvr as where made 97 or after as for final drive I guess as long as u have the Same drive shaft sizes (as ftos have two different sizes with 25 spline and 27 spline) u should be right but I'm not sure on final drive but 100 percent about model of fto

Unlike a RWD, the diff and the final drive are separate on a FWD.

I don't know if the FD can be swapped, but why would you want to? It will yield worse acceleration, with the only real benefit being highway economy

[Bennoz]

Hey Guys,
I'm new to the FTO world. Have a 95 Mivec GPR (I think) with the 4 speed auto tranny and have tried searching to see if this is possible but couldn't find a proper answer.

Refering to this link http://www.mivec.co.uk/performancedata/index.htm is it possible to swap the final drive gear from the 5 speed auto / diff being 3.735 into the 4 speed which is 4.407?
Cheers,

Short answer is no. Yeah you can swap the final drive gear from around the diff with relative ease, but a ratio jump like that means you need the matching gear from the output shaft... the output shaft & final drive cog are one big piece of steel. Which means you'd have to buy an entire 5 speed box & be ripping to pieces. Better off just throwing the whole 5 spd box in & swapping tranny ECUs.

[Taz]

There is something in this world you don't know - and my new life mission is to find that something!

[Orbit-Zzz]

Cool, thanks for the info guys.
I'll have to look at the model info in more detail, can you tell by looking at the VIN?

Yeah I was hoping for better economy for highway driving, not too worried about the acceleration at this stage but I guess finding a complete 5 speed setup would be fairly expensive?

[Sahin]

The money you save from better economy on the highway is not going to equal what you spent on doing the swap for quite a long time...
Convert it to manual

[Orbit-Zzz]

How expensive are manual swaps? They all seem to have a similar ratio to the 4 speed auto though.

[Kustom]

You're not going to save money on fuel doing this unless you're planning on keeping the car till you die... even still you won't save much!

Also 5speed tip boxes are weaker and break more often.

[Daniel2019]

You're not going to save money on fuel doing this unless you're planning on keeping the car till you die... even still you won't save much!

Also 5speed tip boxes are weaker and break more often.

And are also a bitch to get a hold of usually.

[Bennoz]

How expensive are manual swaps? They all seem to have a similar ratio to the 4 speed auto though.

You can usually pick up conversion kits (box, pedals, clutch & flywheel, shifter & cables, dash cluster) for around the $1200 mark.

I recently converted my misses car, took me a weekend & 3 afternoons after work to finish it off.