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Home > Products > Transmissions > TH400 - PG | TH350 | TH400 | 700R4 | 4L65E | 4L85E | TF727 | TF904

TH400 Transmissions
3 Speed Automatic Racing Transmissions



• Lots of gear ratios available
• Can be made lightweight
• Many upgrades available
• Capable of holding 3000 HP
• Lock-Up option now available

NHRA Contingency IHRA Contingency
 
Note: Any ATI TH400 can be made to PG length for an additional charge


STREET/STRIP T400 TRANSMISSION
Auto Function Valve Body, 600 HP Max

Includes:
• Race Clutches and Steels
• Blue-printed High Flow Front Pump
• ATI Forward Auto Valve Body
• ATI HD Sprag Assembly w/steel drum
• OEM Transmission Pan
• Ears left on
401000 - Chevy Case $1,295.00
401030 - B-P-O Case $1,295.00

COMPETITION T400 TRANSMISSION
Manual Valve Body, Up to 700 HP Max

Includes:
• Race Clutches and Steels
• Blue-printed High Flow Front Pump
• ATI Reverse Manual Valve Body
• ATI HD Sprag Assembly w/steel drum
• OEM Transmission Pan
401300 - Chevy Case, Reverse pattern $1,395.00
401330 - B-P-O Case, Reverse pattern $1,495.00
401200 - Chevy Case, Forward pattern $1,395.00
401230 - B-P-O Case, Forward pattern $1,495.00
Ears cut off - no inspection pan mounts for ease of installation.

TRANSBRAKE T400 TRANSMISSION
Reverse Manual, Up to 800 HP Max

Includes:
• Race Clutches and Steels
• Blueprinted High Volume Front Pump
• ATI Compu-Flow Transbrake Valve Body
• ATI HD Sprag w/steel drum
• ATI HD Center Support
• OEM Transmission Pan
401360 - Chevy Case $1,495.00
401370 - B-P-O Case $1,495.00
Ears cut off - no inspection pan mounts for ease of installation.

FUEL COMP T400 TRANSMISSION
Reverse Manual, Up to 1500 HP - Good for high HP, heavy cars, without a transbrake

Includes:
• Race Clutches and Steels
• Blueprinted High Flow Front Pump
• ATI Reverse Manual Valve Body
• ATI Severe Duty Aluminum Direct Drum
• Full one-year warranty on Drum Assembly
• Vasco Input Shaft with steel drum
• Vasco Intermediate Shaft
• HD Steel Forward Clutch Hub
• HD Center Support
• Increased Clutch Capacity
• HD Clutch Pack
• Deep Aluminum Cast Transmission Pan
• 2.48 Low Gear-helical
401600
$2,795.00
401600SC - with SuperCase & Chevy Bell $4,095.00
Ears cut off - no inspection pan mounts for ease of installation.

COPO CAMARO SPEC T400 TRANSMISSION
ATI now offers the T400 in the same specifications as used in ATI's 2014 COPO Camaro #008

Includes:
• Aluminum Forward and Direct Drums
• ATI Reverse Manual Valve Body
• ATI SFI T400 Supercase
• Roller Bearing Tail housing
• Overflow tank
401650 - for Naturally Aspirated motors $4,395.00
401655 - for Supercharged motors $4,975.00
401655 comes with a Vasco input and intermediate shaft, hardened stator tube and 36 element severe duty drum.
 
TRANSBRAKE T400 FUEL COMP
Reverse Manual Transbrake, Up to 1500 HP - Good for high HP, heavy cars

Includes:
• Race Clutches and Steels
• Blueprinted High Flow Front Pump
• ATI Compu-Flow Valve Body
• ATI Severe Duty Aluminum Direct Drum
• Full one-year warranty on Drum Assembly
• Vasco Input Shaft with steel drum
• Vasco Intermediate Shaft
• HD Steel Forward Clutch Hub
• HD Center Support
• Increased Clutch Capacity
• HD Clutch Pack
• 6 AN Fittings
• Deep Aluminum Cast Transmission Pan
• 2.48 Low Gear-helical
401603 $2,995.00
401603SC - with SuperCase & Chevy Bell $4,295.00


        
MOPAR LATE MODEL HEMI T400 TRANS
Rated to 1500 HP and bolts directly to your Gen III Hemi

• ATI SuperCase and Mopar specific bellhousing
• Exclusive Billet aluminum Severe Duty Direct
  Drum assembly with 36 element sprag
• Vasco input and main shaft
• Heat-treated stator support tube
• Roller Bearings
• Increased clutch capacity with heavy duty clutch pack
• Transbrake Valve Body
401640 - New Gen HEMI Trans, SuperCase & HEMI Bell $6,450.00
401641 - New Gen HEMI Trans, SuperCase & Dual Starter Packets in HEMI Bell $6,450.00


T400 3-SPEED OUTLAW SERIES MAX DUTY
ATI Aluminum Transbrake, 2000 HP as equipped
or 3000 HP with big input and pump option

• Race Clutches and Steels
• Blueprinted High Flow Front Pump with heat-treated tube
• Billet Aluminum Safety Reverse Valve Body
• ATI Severe Duty Alum Direct Drum
• Vasco Input Shaft with steel drum
• Vasco Intermediate Shaft
• HD Steel Forward Clutch Hub
• HD Center Support
• HD Roller Bearing Tail
• Deep Aluminum Cast Transmission Pan
• Increased Clutch Capacity in all positions
• -6 AN Fittings
• Lokar® Direct Mount Dipstick

2000 HP MAX RATING
401606 - 2.10 Low/1.40 Second , Helical $5,195.00
401606SC - with SuperCase & Chevy Bell $6,545.00
401607SC - 1.95 Low/1.34 Second - Straight Cut - with SuperCase & Chevy Bell $7,395.00
401608SC - 1.86 Low/1.31 Second - Straight Cut with SuperCase & Chevy Bell $7,395.00
401608LU - 1.86 Low/1.31 Second - Straight Cut w/SuperCase & Chevy Bell with Lock-Up
- Add a Lock Up converter for $2,750!
$10,095.00
401609SC - 2.10 Low/1.40 Second - Straight Cut with SuperCase & Chevy Bell and 4" Ext $7,395.00


T400 Build Options - Prices good only on installed items
T400 SuperCase w/Chevy Bell 400011
$1399
HD Center Support with Bushing 405471
$40
Alum Direct Drum w/34 elem 405722
$545
Severe Duty Alum. Direct Drum 407056
$799
300M Input w/Forward Drum 406000
$239
4340 Input w/ Alum Drum (800 HP Max) 406004
$399
Vasco Input w/Alum Fwd Drum 406005
$595
Trigger Ring, ATI Drum only 407265
$195
Vasco Input Shaft w/Fwd Drum 406001
$349
Trigger Ring, ATI Drum only 407625
$195
HD Steel Fwd Clutch Hub 405370
$149
Moroso Deep Sheet Metal Pan 403610
$229
ATI Sheet Metal Deep Pan 403612
$249
 
Deep Aluminum Cast Pan 403500
$139
Lokar Direct Mount Dipstick 406492
$82
-6 AN trans cooler line fittings 925137
$25
-8 AN trans cooler line fittings 925138
$25
Roller tailhousing-aftermarket 401935
$169
Bolt Together Aluminum Pump 405058
$645
2.10 Low Gear Set, Helical 404081
$1,295
2.10 Low Gear Set, Straight Cut 404210
$2,050
2.75 Low Gear Set, Helical 404088
$549

These 2 options MUST be purchased together: $995
1- 3/16” diameter Shaft with Forward Drum
406002
Billet Aluminum Front Half Large Stator Tube Pump
405158


As horsepower gets easier and cheaper to make and racers set the bar higher and higher, a need is created for numerically lower gear sets with higher strength requirements. Today’s high HP racer needs a durable transmission with a less aggressive starting line ratio. Most racers achieve this by converting the Turbo 400 transmission to a 2-speed unit allowing them the ability to leave off the transbrake in 2nd gear. ATI now has an answer for this market and offers three variations of a 2-speed Turbo 400!

T400 2-SPEED OUTLAW SERIES TRANS
Includes:
• Race Clutches and Steels
• Blueprinted High Flow Front Pump with heat-treated tube
• Billet Aluminum Safety Reverse Valve Body
• ATI Severe Duty Alum Direct Drum
• Vasco Input Shaft with steel drum
• Vasco Intermediate Shaft
• HD Steel Forward Clutch Hub
• HD Billet Center Support
• Billet Aluminum Spacer
• HD Roller Bearing Tail
• Deep Aluminum Cast Transmission Pan
• Increased Clutch Capacity in all positions
• -6 AN Fittings
• Lokar® Direct Mount Dipstick

401612 - 1.57 “Low” - Straight Cut $5,045.00
401612SC - 1.57 “Low” - Straight Cut with SuperCase & Chevy Bell
$6,395.00
401613 - 1.48 “Low” - Straight Cut
$4,695.00
401613SC - 1.48 “Low” - Straight Cut with SuperCase & Chevy Bell
$5,795.00
401616 - 1.40 “Low” - Straight Cut
$6,195.00
401616SC - 1.40 “Low” - Straight Cut with SuperCase & Chevy Bell
$7,395.00
401618SC - 1.34 “Low” - Straight Cut with SuperCase & Chevy Bell
$7,495.00
 


Shown with optional T400 SuperCase and Browell bell



2-Speed T400 Options - Prices good only on installed items

ATI Sheet metal Pan with Cross Member Clearance 403612
$149.95

These 2 options MUST be purchased together: $995
1- 3/16” diameter Shaft with Forward Drum
406002
Super Pump Stator Tube/Plate Assy, Big Shaft
405153


T400 SuperCase
® Transmission Case


Awarded SEMA's Best New Racing & Performance Product for 2013


The new cast aluminum T400 SuperCase is the result of over 2 years of development. Designed in-house at ATI, and cast here in the USA, and machined at ATI on 4-Axis Horizontal CNC machines, the T400 SuperCase features improved fluid pathways to assure better performance and will accept any of ATI’s SFI bellhousings, along with the Reid bell (with slight modifications) and Browell cans.

Chevy, Ford, Mopar and Toyota bellhousings available
T400 Spec Sheet (PDF)

Photos:

T400 SuperCase shown below with available Ford Bellhousing and optional powdercoating

Features:

Heavy-duty 356-T6 cast aluminum case meeting SFI 4.1 specs with no internal or external shield needed
Made in the USA and machined in-house at ATI using only two fixturing set-ups to provide optimum accuracy
Accepts OEM pans, extension housings and 99% of all stock internal components
 
CNC machined minimum depth valve body passages yield extremely fast transbrake releases and quicker shift times
Dual pattern bell mount accepts ATI Super Bells for many engines and other bells on the market
Features additional center support lugs to provide additional 2nd gear strength, with a modified pressure plate supplied
 
Provisions for three extra bolts added to help secure the center support and intermediate pressure plate
Increased thickness extension housing/output shaft bearing area provides extra support for 4x4 units
Roller bearing for output shaft (bushing available by request)
Cooler lines are 1/4" NPT to accept PG quick-connect lines and other popular cooler hoses and fittings

Description
Part Number
Price
ATI T400 SUPERCASE - Chevy Bell and Transmission Case
400011
$1599
ATI T400 SUPERCASE - Chevy Bell and Transmission Case - Lightweight case - saves 2 lbs
400011LW
$1699
ATI SUPERCASE - TH400 - Case Only
400013
$1349
ATI SUPERCASE - TH400 - Case Only Lightweight case - saves 2 lbs
400013LW
$1499
ATI SUPERCASE - TH400 - Tailhousing w/ roller bearing - OEM Length
401935
$199.95
ATI SUPERCASE - TH400 - Tailhousing w/ roller bearing - PG Length
401936
$229.00
ATI SUPERCASE - TH400 - Case bearing
983044
$29.95
ATI SUPERCASE - BOLT KIT - ATI BELL TO CASE - 6 BOLTS, 6 SERRATED WASHERS
950320
$11.95


T400 SuperCase Bell Packages - Include Bell, flexplate, adapter and hardware. Requires ATI 8" or 9" Torque Converter.
SB Mopar 202800
$450
SB Mopar, New Gen HEMI 202801
$450
BB Mopar, 6 Bolt 202802
$450
BB Mopar,8 Bolt 202803
$450
SB Ford, 157 Tooth 202810
$450
 
SB Ford, 164 Tooth 202811
$450
Ford Mod 202812
$450
BB Ford, 164 Tooth, Internally balanced 202813
$475
BB Ford, 164 Tooth, Externally balanced 202814
$475
Toyota Supra 2JZ 202821
$450


TH400 Street Rod Transmission & Converter Package

 

Kit includes TH400 Street / Strip Transmission, Streetmaster Converter®, transmission cooler with fan, cooler installation kit, polyurethane trans mount, Trick-Stick™ Locking Dipstick & tube, and 12 quarts of Super F Transmission Fluid. Available in forward pattern automatic function only.


Description
Part Number
Reg. Price
Sale Price
TH400 - STREET ROD PACKAGE
401800
$2530.67
$1995

No additional core charge, however $200 core credit is availabe with usable core.
CLICK HERE TO DOWNLOAD CORE CREDIT FORM

TH400 Parking Pawl Pin

 

ATI's Parking Pawl Pin for T400 transmissions. With this new, hard to find replacement pin and clip, there will be no more headaches from digging through old cases for rusted up used pins! The new hardened steel pin comes standard on ATI’s T400 Supercase Transmission builds and is engineered to original GM specs.

Description
Part Number
Price
TH400 - PARKING PAWL PIN
405742
$9.95



TH400 Shift Shaft Kit

Shift shafts in T400 transmissions can become corroded in harsh environments. This direct replacement piece is yellow zinc plated for maximum corrosion protection. Includes serrated flange nuts for improved holding capacity.

Description
Part Number
Price
TH400 - SHIFT SHAFT KIT
402100
$14.95
TH400 - SHIFT SHAFT KITS - PACK OF 10
402100-BP
$124.95


TH400 Center Support

 

The upgraded center support for the Turbo 400 features a bronze bushing that virtually eliminates premature sprag failure. It is highly recommended for competition applications.

Also available with Teflon coating for aluminum drums



Description
Part Number
Price
TH400 - CENTER SUPPORT W/ BRONZE BUSHING
TH400 - CENTER SUPPORT W/ TEFLON COATED BUSHING
TH400 - CENTER SUPPORT - BILLET ALUMNUM - 2 SPD
405471
405472
405473
$159.00
$159.00
429.00
 
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