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Performance Built T56 Corvette Transmission

Rebuilt Tremec for Chevrolet Corvette 6 Speed

T56 Chevy Corvette Transmission
T56 Corvette Transmission Smart Parts Automotive Logo Smart Parts Automotive Logo Smart Parts Automotive Logo


Price Years: Out of Stock
Core Deposit: Out of Stock
Delivery Shipping:  
Core Return Shipping:  
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  • Specs
  • Our Process
  • Shipping
  • Core Return Info
  • Warranty
Transmission: Tremec T56
Models: Chevy Corvette
Engine: All
Years: 1997-2004
Type: Tremec T-56
Auto / Manual: Manual / 6 Speed
Input: 26 Spline
Output: 27 Spline
New / Used / rebuilt: Complete Rebuild
Weight: 125 LBS

Gear Ratio:
First Second Third Fourth Fifth Sixth Rev
2.66:1 1.78:1 1.30:1 1.00:1 0.74:1 0.50:1 2.90:1

  • Distance From Center 85 mm
  • Double overdrive provides extended ratio coverage and allows for closer ratio steps
  • Aluminum die cast housings for reduced weight
  • Tapered roller bearings on main and shafts reduce noise and improve durability
  • Needle bearing under all speed gears improve high speed performance and reduce shift effort
  • Advanced synchronizer technology
    • Powdered steel core blocker rings
    • Engineered friction materials for improved durability
    • Multiple cone synchronizer design for lower shift effort and increased capacity
    • Patented strut-type synchronizer design for improved durability
  • Constant mesh synchronized reverse
  • Internal, single-rail shift system
  • Integral clutch adaptor with front cover end-loading design for increased driveline bending strength and greater application adaptability
  • Multiple shift lever locations


Every transmission has been run on a state of the art Dyno. A Dyno simulates the conditions encountered by a transmission during every day use. This ensures that when your part arrives it will have been rigorously tested for noises, leaks, vibrations and performance.
Dyno Tested


O.E.M. stands for Original Equipment Manufacturer. Our parts meet or exceed the guidelines set forth by the manufacturer.

Some transmissions have inherent factory flaws causing them to chronically break down. Through years of experience we have developed several procedures to help fix these problems.

Every transmission has been built and inspected by a certified technician. Our technicians have an average experience of 10 years.

New Parts
All wearable parts are replaced with new parts, this includes: seals, bearings, synchronizers, O-rings, bushings, bands, gaskets, and gears.

Our Rates
Due to the volume of product that we ship, we receive a considerable discount with some of the top freight companies. We pass these savings down to our customers. Your shipping price can be found next to the price of your product. If there is no price listed please call us for a quote.

Residential Address

Any shipments to a residential address will be assessed a $79.00 Residential Delivery Fee

Where do we ship
We ship to the continental United States.
Please call us for a special quote on the following:
• Hawaii
• Alaska
• Canada

When do we ship
Orders placed before 2:00pm are usually shipped on the same business day.

How long will shipping take
Usually within 1-4 business days after the order is processed, depending on your location. One of our operators will give you a more accurate quote based on your area.

Don't have a business to ship to
A $79.00 delivery fee will be added for any transmission sent to a residential address. This fee also applies to core pickups. To avoid these additional charges we offer our customers the option of picking up their transmission at one of our shipping companies nearest terminals.

Local pickups
All orders that are to be picked up locally by our customers must be scheduled and pre-paid by speaking to one of our sales reps. A $25.00 handling fee will be assessed to all pickup orders.

IMPORTANT NOTE: Core fees are a refundable deposit

What's a core deposit
To keep our prices extremely low, we sell our transmissions at a price based on a rebuild able core being returned to us. This is a temporary deposit that is withheld to ensure that we receive your old transmission back. The amount of money required for this deposit is stated next to the price for each transmission.

How long do I have to return the core
The core needs to be received within 30 days from the date of purchase to receive your full deposit.

How long before I receive my refund

After the core has been returned it will be inspected within 2-3 weeks. The core is checked for excessive damages and missing parts. When the inspection has been completed your deposit will be put back on your card.

How do I prepare my core before shipping
It is recommended you ship your core in the original packaging or something comparable. Your core must be completely assembled, drained of all fluids and free of excessive damages to receive your deposit back.

How do I arrange for my core pickup

You can arrange a pickup date anytime within the 30 day return period. Your core return information will come with your transmission.

What if my core is damaged or I do not have one to exchange
If there is no core to exchange, we can just add the deposit amount to the purchase price. In addition, you will only be required to pay the one way shipping fee.

Can I send you a different core than the one I ordered
Unfortunately we can only accept a core for the same transmission we sent you.

Can a core be sent back first to avoid the deposit

shipping the core first might take a slight bit longer, but by doing it this way you will not be required to pay any deposit.

1 Year Warranty   This transmission comes stock with a 12 month warranty. We have several other warranty packages that are available for upgrade. Feel free to ask your sales associate about your warranty options.
Call 1-888-995-PART or 1-888-995-7278

Smart Parts Automotive provides a twelve month nation wide warranty against any manufactured defects on this part.

• We do not charge restocking or shipping fees when a transmission needs to be warranted. Restocking and shipping fees are only be applied if a customer wants to return a non defective transmission or is outside the continental United States.

Buyers warranty begins at original date of purchase and expires 12 months or 12 thousand miles thereafter.

This warranty does not cover any of the following:

• Use of engine, clutches, manual transmission, transfer case, drive line, and/or differential for purposes for which it was not originally designed (such as off-road, race car, etc.)

• Abuse, neglect, accident, or improper towing


• Towing charges, vehicle rental

• Loss of time, inconvenience, loss of use of vehicle, commercial loss or consequential damages

• Failure because of defects or inefficiencies or parts or assemblies not furnished with the transmission (flywheel, clutch, drive shaft, etc)


• Cracked or broken cases

No claims for labor or consequential damages will be accepted.

We are not liable for misuse or negligence causing damage, defect, injury, or loss.

Unit must be returned for our inspection to determine fault.

Warranty Process
In the rare case of a transmission failure please call our sales department where a representative will assist you in the warranty process. 1-888-995-7278

T56 Corvette Transmission
T56 Chevrolet Corvette Transmission