McCarthy Motorsports

McCarthy Motorsports Offering general repairs and high-performance upgrades, custom wiring, stand a lone ecu tuning! From a complete car re wire to add on electronics, we can help!

08/02/2026

First start up of this TT BBC with FT600!
We’ve made some progress learning FT and can’t wait to let go of the button on this street car!

Another SBF blower car tuned up nicely with Holley EFI helping it drive better than new! Contact us for all your Holley ...
08/02/2026

Another SBF blower car tuned up nicely with Holley EFI helping it drive better than new! Contact us for all your Holley efi needs.

Even though it’s been quiet, we’ve been busy keeping hot rods going. Latest project is a tune on this home built hot rod...
07/02/2026

Even though it’s been quiet, we’ve been busy keeping hot rods going. Latest project is a tune on this home built hot rod! Twin turbo t56, what more could you ask for!?!?

05/24/2026

First start of the supercharged SBF Fox on Holley Terminator X efi. It will be buttoned up, tuned, and ready for the customer to enjoy for the first time in a long time.

Another very rare, Ford powered, foxbody in for the Holley EFI treatment. Can’t wait to see the final result, but most o...
05/05/2026

Another very rare, Ford powered, foxbody in for the Holley EFI treatment. Can’t wait to see the final result, but most of all the added reliability and ease of tuning that comes with Holley EFI.

Shop truck got finished up at fab a few weeks ago. Between work and working we’ve been wiring away. What are you working...
03/16/2026

Shop truck got finished up at fab a few weeks ago. Between work and working we’ve been wiring away.
What are you working on?!?!

Spring is around the corner. Get on the schedule now! Nice Buick in for a quick tune to fix some drivability and start u...
02/21/2026

Spring is around the corner. Get on the schedule now!
Nice Buick in for a quick tune to fix some drivability and start up issues from the ‘canned’ wizard tune.

Another street car back on the streets! That little SBC and 3/4 race cam sounds mean. We moved the ignition box inside, ...
02/07/2026

Another street car back on the streets! That little SBC and 3/4 race cam sounds mean.
We moved the ignition box inside, heater box delete, battery relocation, wired water pump/fans, and some general wiring clean up.
(Ignore the nitrous line, it needs to be shortened still)

Even though we’ve been quiet, we are still working away at winter projects. Latest one was dropped off tonight for some ...
01/20/2026

Even though we’ve been quiet, we are still working away at winter projects. Latest one was dropped off tonight for some small updates!

Merry Christmas from McCarthy Motorsports!
12/25/2025

Merry Christmas from McCarthy Motorsports!

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Wentzville, MO
63385

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