BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
 
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 93 T56 info needed.

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Pooge

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Posts : 1700
Join date : 2009-03-24

PostSubject: 93 T56 info needed.   Thu Oct 15, 2009 2:59 pm

There is a complete T/A with a T56 available that I would love to go get tomorrow, but it is a 93 and I am not well versed on them as a swap tranny in a B body. I understand they are geared different and rated for a bit less HP, but I'm wondering if anyone has any real world experience?

This would be going into a box Caprice project. From what I have read 3.73 gears is the way to go, but will this thing stand up to a healthy 350-375 HP LT1? I want a fast 0-60 and could care less about anything after that, other than that the 3.73 and 6 speed should work out to pretty nice highway cruising mileage...

Thanks,

Doug

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1996 Impala SS - 45K original miles - 5.3 LS swap - Brand new Bilsteins...WHAT A DIFFERENCE!
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toomanytoyz
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Join date : 2009-01-20
Age : 41
Location : East Hampstead, NH USA

PostSubject: Re: 93 T56 info needed.   Thu Oct 15, 2009 6:02 pm

It has a lower torque rating, but has a desirable gearset IF it is the optional M29 93-only tranny. Wink It's 3.73-friendly, too. So you most likely won't have to worry about vibrations.

Either way, I would run one in my shit. Smile

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boojum



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Age : 31
Location : NH

PostSubject: Re: 93 T56 info needed.   Thu Oct 15, 2009 7:15 pm

There were two different trannys for '93.

I found this:
1993 Manual/M28 3.36 2.07 1.35 1.00 0.80 0.62
1993 Manual/M29 2.97 2.07 1.43 1.00 0.80 0.62
1994 Manual/MN6 2.66 1.78 1.30 1.00 0.74 0.50

I'll leave it up to the reader to determine what the casting numbers are for each. Smile

If it's a good price grab it!
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Pooge

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PostSubject: Re: 93 T56 info needed.   Thu Oct 15, 2009 7:44 pm

Thanks guys, so what is the deal with the M28? Assuming it is not the M29 is it worth my time?

I assume M29 would be on the spid label? Am I correct to assume it is on the trunk on these like our cars?

Doug

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1996 Impala SS - 45K original miles - 5.3 LS swap - Brand new Bilsteins...WHAT A DIFFERENCE!
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boojum



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PostSubject: Re: 93 T56 info needed.   Thu Oct 15, 2009 10:40 pm

Yes M29 or M28 should be on the SPID label.

If you decide to pass let me know. I'd also risk the lower torque rating. 'sides I have some other lighter weight projects in mind.

from: http://www.f-body.org/faq/4/4_3.htm
Year Model/Optn 1st 2nd 3rd 4th 5th 6th Final
1993 Manual/M28 3.36 2.07 1.35 1.00 0.80 0.62 2.73 (GU2)
1993 Manual/M29 2.97 2.07 1.43 1.00 0.80 0.62 3.23 (GU4)
1994 Manual/MN6 2.66 1.78 1.30 1.00 0.74 0.50 3.42 (GU6)

Year Model/Optn Torque Capacity
---- ---------- ---------------
1993 Manual/M28 360 lbs-ft
1993 Manual/M29 400 lbs-ft
1993 Auto/MX0 400 lbs-ft*

1994 Manual/MN6 450 lbs-ft
1994 Auto/MX0 400 lbs-ft*
*According to the GM Powertrain divison, the maximum torque the 4L60E transmission can handle is 350 lbs-ft of torque.
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Pooge

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PostSubject: Re: 93 T56 info needed.   Fri Oct 16, 2009 8:38 am

DAMN, the guy took a deposit through paypal last night...should have asked these questions BEFORE I found a car... Oh well, there will be more.

Thanks for all the info guys!

Doug

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boojum



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PostSubject: Re: 93 T56 info needed.   Sun Oct 25, 2009 9:35 am

jlehlein posted a spreadsheet on that other forum that might interest you.
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PostSubject: Re: 93 T56 info needed.   

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93 T56 info needed.
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