Built to Hold
Build guides, transmission tech, and install notes from the Gearstar shop floor. Every unit we ship is assembled by one builder, matched to your combo, and dyno-tested before it goes out the door. This is where we show the work: what holds, what grenades, and how to spec it right the first time.
Swapping a TH200-4R Into an Early Muscle Car for Easy Overdrive
Would you like to know how to swap a TH200 4R transmission into early muscle cars for easy overdrive? If that is a yes, let us show you how to go through...
Ford 4R70W Transmission History and Evolution
The Ford 4R70W transmission history and evolution has been an interesting one. It began with more fuel-efficient cars, given the high gasoline cost to...
Top Signs It's Time for a Transmission Rebuild
Keeping a close eye on the top signs it's time for a transmission rebuild will ensure the proper functioning of your transmission for a long time. It will...
How to Choose the Right Performance Transmission Fluid
There are several automatic transmission fluids on the market today, which could make it a bit challenging to ascertain the best fluid for your car....
GM Transmission Recommendations for High Performance
Here is our guide to the GM transmission recommendations for high performance to ensure you get the best automatic transmission for drag racing. You will...
Is My Car Speedometer Accurate?
Have you ever noticed the significant difference between your car speedometer that the speed communicated to you by your GPS or Sat-Nav (satellite...