Sheppard Automotive & Muffler

4426 Burkburnett Rd.

Wichita Falls, TX 76306


Phone: 940-855-0753

or email us

Business Hours




  • Monday
  • 8:00 • 5:30
  • Tuesday
  • 8:00 • 5:30
  • Wednesday
  • 8:00 • 5:30
  • Thursday
  • 8:00 • 5:30
  • Friday
  • 8:00 • 5:30
  • Saturday
  • 9:00 • 1:00
  • Sunday

After hours           940-781-7434





After Hours


 Carburetor Conversion



The choices include LS1-LS2-LS3 in GM's Automotive Line and 5.3L-6.0L-L92-L9H for GM's Truck Line. The GM Performance Line offers the 480 & 525 Horse Power LS3s

 Horse power options for the factory and performance LS engines range from 300 to 665. 

For the budget-minded, there are some good used take-out engine available at great prices.

We take pride in our detailed and painted engines that can be customized per your request. We offer these engines with the color of your choice, chromed or polished components, polished or black anodized ARP bolt kits & much more.  Sheppard Automotive is here to help match you to the correct engine for your needs.


The choices of transmission includes 4L60E-4L70E-4L80E and NEW 6L80E-6L60E THE 6 speeds automatic transmission.We have stock stall covers and also we have high-stall converters for high performance


Wiring Harness

Sheppard Automotive offers custom engine and transmission harnesses that include the correct OEM connectors, some added features, & no extra clutter that is not needed. Each harness is tested prior to shipping for quality control. We offer custom programming for LS Series ECMs. We use factory GM ECMs that work great and are more reliable then aftermarket units. IF a problem should happen, these ECMs can be serviced by a GM dealer. 

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