Rb20 Auto Onto Rb30

[SPOOLED 31]

Hi guys, just signed up

Need to know if the RB20 Auto box will bolt up to an RB30.

Can i still use the 30 tailshaft, crossmember and speedo drive?

Edited June 18, 2010 by SPOOLED 31

[Bl4cK32]

it will bolt up to the motor yes, but dont expect it to last.

*As a guess the tailshaft yoke would be different, as would length. Crossmember would be different, and the speedo drive is a cable type on the auto box.

So no its not a drop in replacement

*note ive not seen the setup to be sure.

Edited June 18, 2010 by Bl4cK32

[SPOOLED 31]

Thanx bl4ck32 Is there any1 else out there that could possibly shed some light on the subject? Im at my wits end here and dont know wat else to do

[turboedsloth]

why do you want to put that auto onto the rb30?

[GUN_METAL_GTR32]

why do you want to put that auto onto the rb30?

AGREED

i have a 25 box behind my rb30 it wont last lnog but it fits good

[SPOOLED 31]

Coz a 20 is stronger than a 30 box and it was given to me, thats why?

[turboedsloth]

ah ok if you say so.. in that case you need a 20 auto tailshaft, speedo adaption somehow, all mounts and i would be making sure the torque converter bolts onto the flexplate on the back of the 30. if it doesnt i would be getting one for a 20.

just out of curiousity do you have the holden 4n71b behind the 30 atm and is the 20 box a RE4R01A?? if you dont know wat i am talking about post some pics of what you have.

[drewbear]

ah ok if you say so.. in that case you need a 20 auto tailshaft, speedo adaption somehow, all mounts and i would be making sure the torque converter bolts onto the flexplate on the back of the 30. if it doesnt i would be getting one for a 20.

just out of curiousity do you have the holden 4n71b behind the 30 atm and is the 20 box a RE4R01A?? if you dont know wat i am talking about post some pics of what you have.

Interseting as I have just tried to put a rb30 box behind a RB20DET (red top) in a 200ZR import.... it doesn't go lol

[turboedsloth]

no it wouldnt haha. they are different boxes and have a diiferent bell housing bolt pattern