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Automatic Transmission Cases
The gearset of your automatic transmission is surrounded by a protective case made of iron or aluminum. Corrosion or damage may require a replacement for your stock...
The gearset of your automatic transmission is surrounded by a protective case made of iron or aluminum. Corrosion or damage may require a replacement for your stock case, and if you’re making upgrades for competition, you may need a beefed-up case for safety.
Top Brands
Stabilizing your high-performance engine is an important job, so you should go with a name brand you trust, instead of some third-party reseller. Summit Racing Equipment sells rocker arm stud girdles from manufacturers like COMP Cams, Harland Sharp, Trick Flow Specialties, Lunati, Howards Cams, and more.
The gearset of your automatic transmission is surrounded by a protective case made of iron or aluminum. Corrosion or damage may require a replacement for your stock case, and if you’re making upgrades for competition, you may need a beefed-up case for safety.
Top Brands
Stabilizing your high-performance engine is an important job, so you should go with a name brand you trust, instead of some third-party reseller. Summit Racing Equipment sells rocker arm stud girdles from manufacturers like COMP Cams, Harland Sharp, Trick Flow Specialties, Lunati, Howards Cams, and more.
Showing In Stock Items. Show All 217 Items.
Automatic Transmission Case, Super Hydra 400, A Option, 0.435 in. Thick PP, Call for Thinner Options, SFI 4.1, Aluminum, Natural, GM TH400, Each
Part Number: REI-SH400DRAG
Estimated Ship Date: Today
Estimated Ship Date: Today
BUILD IT WITH SUMMIT!
Summit Racing™ TH400 Transmission Cases SUM-700405
Transmission Case, TH400, Aluminum, SFI Approved, GM, Each
Part Number: SUM-700405
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Transmission Case, Super 80, GM 4L80E, SFI 4.1, Each
Part Number: REI-S80
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Transmission Case, Aluminum, Natural, TH400, GM, Each
Part Number: ATI-400011
Estimated Ship Date: Today
Estimated Ship Date: Today
Powerglide Case, Superglide, 2-Piece, Permanent Mold Aluminum Casting, SFI 4.1 Certfied, Each
Part Number: REI-PG2000
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Transmission Case, Aluminum, Natural, GM, Powerglide, Each
Part Number: REI-PG1500
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Case, Ultra-Case Powerglide, Aluminum, Natural, SFI 4.1 Rating, Each
Part Number: JPT-92310
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Transmission Case, TH400, Aluminum, Natural, SFI 4.1, GM, Each
Part Number: TOS-4072
Not Yet Reviewed
Estimated Ship Date: Mar 23, 2026 if ordered today
Estimated Ship Date: Mar 23, 2026 if ordered today
Automatic Transmission Cases, ACDelco Automatic Transmission Cases, Aluminum, Natural Finish, Chevy, Each
Part Number: ADO-24275994
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
CASE ASM-A/TRNS
Part Number: ADO-24273111
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
TRU-STREET 4L75E LATE CASE UP TO 600 FT LBS OF TORQUE WITH 24-2600 STALL CONVERTER FOR LS ENGINES
Part Number: BTM-1047500
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
TRU-STREET 4L75E RR LATE CASE UP TO 600 FT LBS OF TORQUE WITH BILLET TRIPLE LOCK CONVERTER ENGINE BRAKING, 2.84 FIRST GEAR
Part Number: BTM-1047500RR
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Transmission Case, SuperCase, Powerglide, Aluminum, Natural, SFI 4.1/30.1 Rating, Each
Part Number: TCI-720002
Not Yet Reviewed
Estimated Ship Date: Mar 5, 2026 if ordered today
Estimated Ship Date: Mar 5, 2026 if ordered today
P/G DEDEN CASE W/LINER&BEARING
Part Number: TCI-720007
Not Yet Reviewed
Estimated Ship Date: Mar 5, 2026 if ordered today
Estimated Ship Date: Mar 5, 2026 if ordered today
REID TWO PIECE TRANS CASE
Part Number: TCI-720012
Not Yet Reviewed
Estimated Ship Date: Mar 5, 2026 if ordered today
Estimated Ship Date: Mar 5, 2026 if ordered today
CASE, TH-400 REID SFI
Part Number: TCI-210002
Not Yet Reviewed
Estimated Ship Date: Mar 5, 2026 if ordered today
Estimated Ship Date: Mar 5, 2026 if ordered today
CASE, TH-400 REID OFFROAD SFI
Part Number: TCI-210003
Not Yet Reviewed
Estimated Ship Date: Mar 5, 2026 if ordered today
Estimated Ship Date: Mar 5, 2026 if ordered today
