Slipping gears?
We lock them down.
Over 30 years of Master Certified experience diagnosing, rebuilding, and bulletproofing transmissions. From classic performance builds to everyday road machinery, we keep you moving forward.
Advanced Slippage Analysis
Real-time line pressure and torque slip calibration monitoring.
Full rebuild warranty
Every setup is backed by our master-certified technician guarantee.
30+ Years Experience
GM Trained Specialist with master certifications and diagnostic proficiency.
Complete Overhauls
High-performance custom case paintings, upgrades, and bulletproofing builds.
Expert Diagnostics
Advanced diagnostic equipment to pinpoint hydraulic, electronic, or gear slip.
Workbench & Live Footage Console
Cycle through our master-grade workbench photographs of rebuilt assemblies, or switch over to live video clips featuring case preparation and dyno testing within our Powell garage.
GM Performance 4L60E #01
Precision red-embossed high-pressure casing and silver-alloy valve assembly ready for installation.
Vibrant Gloss Castings #02
Upright gloss red multi-section high-performance casing on heavy staging workbench.
Blue Torque Converter #03
Rigged high-performance lock-up converter bolted to fully overhauled custom red-shell unit.
Orange Component Rig #04
Clean orange-finished transmission mounted on mobile staging rig for final internal validation.
Fresh From the Bay
No stock photos. This is real work coming across our benches and lifts right now.
Rebuilt & Going Back In #05
Freshly rebuilt, case-painted automatic with its converter installed, strapped to the jack and heading up into the truck.
V8 Engine Teardown #06
Heads off and block on the stand so we can inspect every cylinder and find the real cause before a single part gets ordered.
Valve Body Stage #07
Standing tall mid-rebuild with the valve body exposed, pump sealed up and input shaft ready for its converter.
OUR CORES & CAPABILITIES
While transmissions are our custom hallmark, Slipping Gears Garage delivers complete bumper-to-bumper premium repairs.
Automatic and manual overhauls, valve body calibrations, shift-kit setups, performance converter coupling, and fluid/filter service.
Computerized diagnostics, electrical fault chasing, harness repairs, tune-ups, and structural component swaps.
Axle shafts, universal joints, differential gear matching, transfer cases, and premium shock/strut replacements.
Pre-purchase mechanical audits, coolant/hydraulic flushes, brake lines, and multi-point master safety checklists.
Now Hiring in Powell
Good with a wrench? We're looking for techs and shop help who take pride in doing it right the first time.
GET AN ESTIMATE
Describe the issue or request your upgrade specs. Our Master Technician will review and contact you with a transparent timeline and path.