Different 5ths in the f20

[conza123]

I've gotta pull my spare f20 apart any way to stick in my nova was just wondering what 5th I can stick in to drop the revs a bit for a better cruise as been told a few different answers but don't want to loose top end either
2 I've been told are
5th out of a f18 wr box
or 5th out of a f17 wr diesel box

many thanks Connor

[Balley]

I used a 5th gear set up out of a Cavalier Isuzu TD F18. It's works very well for cruising.

[conza123]

I used a 5th gear set up out of a Cavalier Isuzu TD F18. It's works very well for cruising.
What about top end

[House]

If you're reducing revs for better cruising then it'll increase your potential top speed.

[Stuart]

For the turbo? I'd drop a taller final drive in instead lol

[Scottcooper85]

I'm going to fit a full f18w box in mine when I kill the f20

[Benn]

I'm going to fit a full f18w box in mine when I kill the f20

I wouldn't. Every gear is much longer. Wont be a fast getting there. But quicker on a long pick up.


And sorry Connor, i thought it was the F18WR 5th that was wanted so motorway cruising. Might be the derv box 5th.

[Will F]

As Benn said - there's no point in fitting the WR box - it will be rubbish.
Just change the FD as Stuart says - later F20s (in calibras and Cavs) had a longer 5th too btw

[Balley]

I would say if it would do 140mph before, it would probably do 160mph with the right amount of BHP of course.

[Iain]

The diesel F17 long 5th in my short ratio F20 (4.2) is pretty awful for spirited driving, I try to avoid fitting it where ever possible. I can't imagine it being very nice in a standard final drive.

[Stuart]

That's the thing, if you put a "cruising" 5th in, in even a slightly fast nova (as in a standard XE on TB's) then you will go from a fun 1-4 and into a long ass 5th that'll drag.
Granted a turbo will reduce the implied effect but even so, it'll suck balls

[Rob H]

I don't see the point in a longer 5th gear personally. The nova isn't a mile munching grand touring car its a lightweight hatch that wants to be thrashed and banged through the gears. I have other cars though so maybe that affects my opinion since I don't daily it.