Custom Transmission

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Get reviews, hours, directions, coupons and more for Custom Transmissions at 1404 Georgetown Rd, Copperas Cove, TX 76522. Search for other Auto Transmission in Copperas Cove on The Real Yellow Pages®. Custom Transmission Works. 109 likes 2 talking about this. We are a Transmission repair facility, With over 38 + years of building and replacing Transmissions. We do stock builds but love doing.

  1. Custom Manual Transmission
  2. Custom Transmission Cooler Lines
  3. Custom Transmission Coolers

The staff of JASPER® Authentic Custom Drivetrains, a division of Jasper Engines and Transmissions, understands the pride and satisfaction that our customers have in the ownership of a classic vehicle.

We show that understanding in our attention to detail, the quality of our work and in making sure that you will be satisfied with the experience you have with us – from the interaction with our staff to your completed transmission. We offer custom “days gone by” remanufactured transmissions for your special project. The transmissions we can build for you include: Borger Warner Three Band, C4s, Dual Range, Dynaflow, Ford-O-Matics, Hydramatics, Jetaways, Jensens, Roto Hydramatics, Powerglides – cast and aluminum, PowerFlights, and more.

Custom Transmission

The Authentic transmissions we build can be found in Buicks, Cadillacs, Chevys, Chryslers, DeSotos, Dodges, Fords, Hudsons, Kaisers, Lincolns, Mercurys, Nashes, Oldsmobiles, Plymouths, Pontiacs, Ramblers and Studebakers.


Custom Manual Transmission

Because many of the transmissions we receive are for numbers-matching vehicles, we focus on maintaining authenticity. Should a major casting such as the case, bell housing or extension housing not be suitable for use, we will contact you for your instructions. If you should instruct us to replace any of these castings, we will return your original castings so that you can document the authenticity of your vehicle. And, you can request to have your JASPER reman transmission painted or to leave it unpainted as the original unit might have been.

Being founded in 1942, our company grew up with the transmissions that enter the doors of our JASPER Authentic Custom Drivetrain division. You can be sure that we will honor the trust that you have placed in us and the pride that you place in your classic vehicle.

Custom Transmission Cooler Lines was established in 1981 as a manufacturer of custom transmission systems including gear sets, shafts and splines and power train related components predominately for (but not limited to) the Automotive Racing Industry.

Custom Transmission

Specializing in the conversion of factory automotive gearboxes and final drive systems redesigned to their intended use and application, as we have supplied to individual racers and race teams alike, world-wide. offers design and manufacturing services to obsolete and conversion components from “one off” to limited production runs.

At, we provide a range of specialized services for customers world-wide.

Gear Design and Ratio Selection

Surface Treatments

REM® ISF Polishing

Gear Ratio Calculator

Dog Engagement Machining

Custom Transmission Coolers

Mold Making and Body Kits