Hybrid A555 w/OBX

[badandy]

Okay, before I get slammed for asking this question...

I swear I've searched and searched:o

Anyway, I seem to remember reading that if you want to make a 3.5 final drive A555 that you have to use the ring and pinion shaft out of the same year A520...correct?

But...

I also believe I read that 87 A555 is where the difference is....but 88/89 A555 and A520's will interchange just fine?

I want to do this and have the donor 88 A520 out of my CSX-T...and I have a 89 A555 in the car...so will the 88 A520 ring and pinion shaft work with my 89 A555?

I will be doing the OBX at the same time but will likely be out of town when I do the swap out so I don't want to run into trouble.

[Mario]

87/88 555/520 and 89' 555/520.

That's the compatability breakdown.

[badandy]

87/88 555/520 and 89' 555/520.

That's the compatability breakdown.

That just figures:yuck:

Looks like I gotta find a 89 gear and pinion shaft. Thanks Mario:thumb:

[Mario]

No problem. Are you looking for the A-520 components? I may have them, check back with me tomorrow.

[tryingbe]

Checked the Knowledge Center?

http://www.turbo-mopar.com/forums/vbarticles.php?do=article&articleid=80

[Aries_Turbo]

andy you can use 90-91 523 with the 3.50FD and the 89 555 gearset in the 523 case.

Brian

[badandy]

andy you can use 90-91 523 with the 3.50FD and the 89 555 gearset in the 523 case.

Brian

That makes sense however I don't have a 523:( I just finished up putting the moly plate in my 555 too:o

Eh, anyway...if anyone is looking for a 88 520 gearset to hybrid the right year 555 let me know as I got a 520 with a blown 2nd gear.

[badandy]

Checked the Knowledge Center?

http://www.turbo-mopar.com/forums/vbarticles.php?do=article&articleid=80

DOH! :o

Uh...I'm usually a pretty fart smeller I promise:lol:

[badandy]

87/88 555/520 and 89' 555/520.

That's the compatability breakdown.

Alright, now here is where I'm confused. I realize I could just rip things apart but I want to know 100% before I start (without having to buy a new pinion shaft and ring gear if possible) as I don't have the ability to do this at my house and will likely go visit Reeves and Warren to complete things.

On to my question:

87/88 A-555's AND 87/88 A-520's have 5th gear held on by a snap ring right?...and supposedly 89 A-555's have 5th gear held on by a nut...correct? Is this the sole identifying factor how you will know if the A-520 pinion shaft is compatible with the A-555 tranny?...or is it possible there was a mid year change in 89 A-555's from the snap ring to the nut and the rest of the shaft is identical?...thereby non-compatible?

The reason I'm asking AGAIN is because (like I mentioned before) I have an 88 A-520 out of my CSX-T with a blown 2nd gear. I have an 89 A-555 in the car now. In talking with friends *we believe* it may be a left over 88 A-555 because 5th gear is indeed held on with a snap ring instead of the nut like 89 A-555's are supposed to be...therefore we think it might be compatible after all with my 88 A-520.

I hate to beat a dead horse but is compatiability really year specific or is there a grey area here?

[tryingbe]

87/88 A-555's AND 87/88 A-520's have 5th gear held on by a snap ring right?...and supposedly 89 A-555's have 5th gear held on by a nut...correct?

That is correct. But also keep in mind that a 1989 turbo minivan uses a 87/88 A555, NOT a 89 A555.

If both transmission 5th gear are holding by a snap ring, they're compatible. If they are both holding by nut, they're compatible.

As the link I posted, the snap ring transmission have a different intermediate shaft than nut transmission. And you can not make a hybrid out of a snap ring and a nut.

[black86glhs]

You said nut transmission!!!!:D:D:D:D

[badandy]

You said nut transmission!!!!:D:D:D:D

:lol: That cracked me up man!

[badandy]

That is correct. But also keep in mind that a 1989 turbo minivan uses a 87/88 A555, NOT a 89 A555.

If both transmission 5th gear are holding by a snap ring, they're compatible. If they are both holding by nut, they're compatible.

As the link I posted, the snap ring transmission have a different intermediate shaft than nut transmission. And you can not make a hybrid out of a snap ring and a nut.
Okay, that's what I thought. I had been told that before but wanted to get some other opinions. it will be like a 6 hr drive when I go to do this. Thanks man:thumb: