Supercharged transmissions interchangeable? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-11-2007, 03:18 PM   #11
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Sam'* Pull a Part in Worcester. $100 for any trans from any car. Many of them have GM rebuilt stickers on them.
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Old 10-11-2007, 03:22 PM   #12
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Quote:
Originally Posted by BillBoost37
Sam'* Pull a Part in Worcester. $100 for any trans from any car. Many of them have GM rebuilt stickers on them.
Sams is my home away from home, but I REALLY don't want to pull the trans, then reinstall it.

Then again, I have no idea how hard it is to swap a bonny trans. I'm used to DSM/awd trans swaps.

I'm looking at a 93 Taurus in decent shape for $500 with no problems besides needing struts.
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Old 10-11-2007, 03:53 PM   #13
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It'* not the hardest or easiest pull.

Both axles.. 5 bolts to the engine..a couple mounts..at the yard..I'd probaby drop the entire cradle and then pop it out and have them loader it to the truck for me. But heck.. it sounds like you are there about as much as me.
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Old 10-11-2007, 04:26 PM   #14
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I remember reading somewhere that the 95 SE was lucky to get the same axles as the SSEi'*. I think I remember Don talking about it. That may mean they aren't interchangeable for the most part.

What gear ratio is your SE?

If it'* 3.06, would the HD 2.97 really be incompatable? It'* only a 3% difference.

The reluctor wheel may be the problem now that I think of it... Anybody?
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Old 10-16-2007, 05:40 PM   #15
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Ok, i have an update. the tranny in question is out of a 94 sse sc. he said he will inc both axles and tq converter for $50 if i remove it. he said if the gearing is diff i could use my SE vss to keep the speedo accurate.

what do you guys think?
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Old 10-16-2007, 08:53 PM   #16
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Quote:
Originally Posted by Ronnie Size
Ok, i have an update. the tranny in question is out of a 94 sse sc. he said he will inc both axles and tq converter for $50 if i remove it. he said if the gearing is diff i could use my SE vss to keep the speedo accurate.

what do you guys think?
I looked it up, and the VSS rotor for both transmissions have a tooth count of 31. Thats a good thing. (I think..)
You can't just swap Vehicle Speed Sensors anyway. You have to swap the rotor on the differential.
I compared shift tables between a 3.06 and 2.97 trans and the maximum commanded MPH shift difference was 15 mph.. That is kind of large.

I don't think anyone here can tell you wether or not you can run that trans trouble free.

One thing you can do is spend $40 more bucks and just have Sinster Performance import all the correct shift tables, TCC lock up/release rates, and other constants onto your chip.

I'm running a SSEi trans/converter (came with the car) and a L36, but I changed all of the above info to the stock SSEi tranny settings.
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Old 10-17-2007, 01:20 AM   #17
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So if I paid $40 for that chip, than the gearing wouldn't be an issue?

If that and the axles are the only issue, and I've got it covered than that would be nice.
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Old 10-17-2007, 01:27 AM   #18
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Quote:
Originally Posted by Ronnie Size
So if I paid $40 for that chip, than the gearing wouldn't be an issue?

If that and the axles are the only issue, and I've got it covered than that would be nice.
Yep. Thats it.
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Old 10-17-2007, 01:28 AM   #19
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Quote:
Originally Posted by Ronnie Size
So if I paid $40 for that chip, than the gearing wouldn't be an issue?

If that and the axles are the only issue, and I've got it covered than that would be nice.
its 50 now, and thats not for a new chip. that is to reprogram the existing prom. if you can have down time, then send the old prom. if not, you can send another prom, or he can even make a piggy back prom that ur existing prom would plug into. that was 90 though.

talk to ryan at gmtuners.com he is a very helpful, customer oriented person.
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Old 10-17-2007, 02:05 AM   #20
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That'* not too bad then...

$50 for the trans, axles, tq converter,
$50 for custom chip,
$50-70 for pan gasket and a shitton of trans fluid

Then I just have to find out why my car shakes really bad, gets horrible gas mileage, and starts really hard. Yay.
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