424 tranny???

[tsiconquest88]

Just curious on my 89 turbo voyager the tranny is stamped on the case with large lettering 424 but its not a number i hear of, do i have the wrong tranny? I think i may be havin some issues with the tranny as well. I am wondering the wrong tranny is in there and cant handle the turbo engine?.

[moparzrule]

Can you get a pic of the tag on the trans?

[tsiconquest88]

sure man, actually i didnt even see a tag but i will look again, all i saw was a huge 424 cast in the case itself.

[moparzrule]

Wierd, how about a pic of that too?

Tag is on the top of the trans close to the timing window.

[turbovanman²]

Thats most likely a casting number and worthless. You have an A413 trans, turbo or not, hard to say as some rebuilders don't have a clue and just use whatever. On the drivers side front, above the oil pan, there is a number on the flat part, get that and I can tell you what it should be if no ones tampered with it.

[black86glhs]

I've seen some of the trans with numbering that looked like it was done with a welder. 424 sounds familiar. The tag on top is the important one.

[turbovanman²]

I've seen some of the trans with numbering that looked like it was done with a welder. 424 sounds familiar. The tag on top is the important one.

Its on all the A413's, bottom of the bellhousing.

There is no tag on an A413, just the number like I mentioned on the rail.

[black86glhs]

Its on all the A413's, bottom of the bellhousing.

There is no tag on an A413, just the number like I mentioned on the rail.
:banghead: Sorry I was thinking of a five speed. I knew I had seen those numbers before.:thumb:

[tsiconquest88]

ok so i do have the right tranny. I was just wondering if the 424 was the number like the 413, 555 etc etc cus i was like there is no a424 that i seen anyway lol and in turn thought i might have had a tranny that wasnt strong enough maybe for NA of the same motor. Apparently as the above member said though that same tranny was used NA and turbo correct? But yea i have an auto, turbovanman was right, not a 5 speed. Sorry for not clarifying that guys.

[black86glhs]

Yes they were used in both. A N/A trans will die a very wicked death behind a turbo motor.

[Vigo]

a stock turbo tranny will also die behind a non stock turbo motor if its high miles. :)

[tsiconquest88]

Wait if it will die under turbo motor than didnt u guys just say the same tranny was used in the turbo and NA engines? im confused lol Yes typically a non turbo tranny wont hold up to a turbo engine but im confused on the above stuff.

[black86glhs]

Sorry, same type(a413). The turbo trans are built stronger to handle the extra torque(internally).

[tsiconquest88]

Also my van has 193k on it and idk if the tranny is original but the engien and head are newer. The tranny seems like its slippin but idk if its just the way they shift but maybe u guys can elaborate that know the auto vans, its a 3 speed as u all know but my shift points are withi na 1 second apart on accel from a stop. both shifts are also before 30 mph. If i am under boost even a little the tranny seems to just slowly engage as the engine revs a little from 1st to second and more from 2nd to 3rd. the mosr boost the worst the engagement. Is this to save the tranny life its done or is this the need for the different valve body i hear of? if so how do i get that valve body and detail me where to get it. By the way fluid is at proper level and clean as a whistle. And it doesnt bang into gear onuthin just a smooth but long drap into gear as the engines revs before going into gear. Almost like a clutch starting to be on its way slipping (not bad slip but that minor slip u get before the clutch gets too bad) in a manual trans lol.

[tsiconquest88]

and in addition to ur response so the a413 is used in both ur saying or the turbo one is built a little toughter than the a413 used in NA?

[black86glhs]

Yes, but I don't remember what the differences are. I only run 5 speeds in mine.

[tsiconquest88]

cool thanks man and anyone that can detail me on my #14 above post about the possible tranny issue i am havin, please do.

[turbovanman²]

Well the turbo's have more clutch packs, different shift points and a different torque converter.

Have you adjusted the bands?

2-3 is usually a mushy shift, IE it flares, 1-2 is nice and solid unless the trans is wearing out.

Go here for the valve body mods-

http://www.turbo-mopar.com/forums/showthread.php?t=3180

Line pressure mod is at the top of this section.

Reusable pan gasket-

http://www.turbo-mopar.com/forums/showthread.php?t=3211

[tsiconquest88]

ur the man!! Looks to be just what i need bud. Thanks!! will give it a go when i get around to it lol.

[tsiconquest88]

hey turbovanman as for that link u gave, im confused, see i was told the valve body would help the 2-3 shift. however reading that link through and through the improvement for 2-3 shift is actually a heat and clamping process to the front clutch pack spring to shorten it 1/2 inch. So what should i do now? Did u do any of these things?

[turbovanman²]

hey turbovanman as for that link u gave, im confused, see i was told the valve body would help the 2-3 shift. however reading that link through and through the improvement for 2-3 shift is actually a heat and clamping process to the front clutch pack spring to shorten it 1/2 inch. So what should i do now? Did u do any of these things?

The mods help all shifts, not just the 1-2. IF you do the mods listed and 2-3 still flares, then you have in internal issue that needs fixing, IE new clutchs, seals etc.
The spring mod for the 2-3 shift isn't necessary, I've done some trans without it and they still shift nicely.

[tsiconquest88]

ok cool so do what in specific from that site to the valve body for 2-3? Or should i say then what did u do? I am looking to do what i can for that 2-3 as easy as possible for now for better shift there, cus eventually im prob going to do a 5 speed swap mainly for the better fuel mileage i can get.

[turbovanman²]

I did it all, tightened up clutch packs, 2-3 spring, Superior's mod which isn't there, more clutch's then I did the valve body mods, line pressure and a hi po TC plus more.

The vb and line pressure will help but if the trans is worn out, it won't help much. If you do the line pressure mod, DO NOT adjust the valve body screw, this will alter your shift points.

[tsiconquest88]

Yea im not lookin to take it apart that much i figured valve body fine cus thats right after the pan if that wont help i wont bother. Whatya think? my 1-2 isnt bad really. mainly 2-3. All i care about is gettin 2-3 to come to normal again.

[turbovanman²]

Yea im not lookin to take it apart that much i figured valve body fine cus thats right after the pan if that wont help i wont bother. Whatya think? my 1-2 isnt bad really. mainly 2-3. All i care about is gettin 2-3 to come to normal again.

Its hard to get the 2-3 shift normal without taking it apart. Worst case, you help it with the vb mods.

[tsiconquest88]

Okie. So do what is shown for the vb i will do possibly. Along with maybe using that harsher atf that was shown on the site that firms up the shifts a little too.