Differences Between Gearboxes?

[Skrimgo]

Hi all, this has probably been asked a few times, tried searching but couldn't find many results and didn't want to sit behind a screen for hours looking page after page.

Are there any major differences between RB25DE and RB20DET gearboxes?
I currently drive a 20det powered R32 that gives me trouble trying to change into second unless I take it real easy and I've been offered an RB25DE gearbox for free from an R33.

Are the gear ratios the same and is there anything major I need to look out for?


Might pay to even post some more info for other people to see!
Thanks in advance.

[White GTS-T]

R32 RB20DET and R33 RB25 DE = Same gearbox.

Try this before you swap out boxes. http://justjap.com/store/product.php?productid=17082

[GTSBoy]

The ratios are in fact slightly different. I think the biggest difference is in 3rd and 5th.

The RB25DE ratios actually suit the RB20DET better than the original box. I was in the same position you are in, did the 25DE box instead and was happy.