kenny811
NAXJA Forum User
- Location
- Damascus, OR
Will a 231 Tcase off a BA15 trany bolt right to an AW4? or will there need to be some modification?
Thanks
Kenny
Thanks
Kenny
-
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231 bolt up???
- Thread starter kenny811
- Start date
- Location
- Westminster, SoCal
How many splines is your aw4? Also check whether the input/output shafts will matchup on the depth/length. IIRC the 231 from the ba15 will be 21 spline and your aw4 cane be either 23 or 21 splines and there were different shaft lengths throughout the years.
5-90
NAXJA Forum User
- Location
- Hammerspace
Remi beat me to most of it...
The BA-10 will have a 21-spline output, meaning it will need to be an early (1987-1990. 1991?) AW4 - count.
The input shaft will have to have the correct "stickout" for the AW4 - there were a couple of variations.
Note that if the AW4 you're using has a 23-spline output, you can swap the input gear on your NP231 to make it a 23-spline input by using an earlier (up to 1995 or so) input gear - you cannot use a later gear, while they do mesh, it's not a correct mesh - and you'll be draining your gear teeth with your first fluid change.
Novak Adapters (www.novak.com, I think) has a good information collection on conversions like this. It's not totally compleat, but it serves the purpose neatly for most people (I'm working on the "compelat" version, but it's taking time...)
The BA-10 will have a 21-spline output, meaning it will need to be an early (1987-1990. 1991?) AW4 - count.
The input shaft will have to have the correct "stickout" for the AW4 - there were a couple of variations.
Note that if the AW4 you're using has a 23-spline output, you can swap the input gear on your NP231 to make it a 23-spline input by using an earlier (up to 1995 or so) input gear - you cannot use a later gear, while they do mesh, it's not a correct mesh - and you'll be draining your gear teeth with your first fluid change.
Novak Adapters (www.novak.com, I think) has a good information collection on conversions like this. It's not totally compleat, but it serves the purpose neatly for most people (I'm working on the "compelat" version, but it's taking time...)