412 Dyno Shop and Service

04/17/2026

Bigger long tube headers added on this one and picked up about 15whp.

04/17/2026

The aftermath of a cam and header install we did.

04/14/2026

Starting immediately:

Any vehicle not paid within 7 days of receiving a bill will incur a $25 per day storage fee.

We understand things come up, but space in our shop is limited and we need to keep things moving for all customers. Please make arrangements to pick up your vehicle promptly once notified.

If you have any questions or need to make payment arrangements, feel free to reach out.

— 412 Dyno Shop

03/29/2026

We appreciate everyone!

03/05/2026

🚨 NOW HIRING – Performance Technician 🚨
📍 Decaturville, TN | 412 Dyno Shop

Love horsepower? Live for the sound of a cammed engine on the dyno? If you’d rather be turning wrenches than sitting behind a desk, we want to talk to you.

We’re growing and looking for a motivated, dependable tech ready to work on real builds, cams, injectors, power adders, exhaust systems, diagnostics, dyno pulls, and more. Performance experience is a big plus. Welding, fabrication, HP Tuners, EFI, or dyno experience? Even better.

✔ Competitive pay (based on experience)
✔ Room to grow with the shop
✔ Team-focused, drama-free environment

If you’re reliable, take pride in your clean work…this could be your spot.

📩 Message us directly, stop by the shop in Decaturville, TN, or email [email protected] to apply.

02/07/2026

01/11/2026

My phone is down for the time being until I can get it fixed or replaced. Message me here or my personal page and I will try to keep check.

12/25/2025

Merry Christmas Everyone!

12/11/2025

Out of the shop till next week. I'm trying to answer calls as I can.

12/04/2025

The results are in on the 2004 corvette HP numbers. It put down 405whp and 412wtq. Picking up 95 hp from a cam and exhaust is pretty dang good. This was the lsxceleration stage 4 cam. Also look how much smoother the dyno graph looks over factory. Hit me up if you need any parts, installs or tunes.

LSXceleration Firecore Performance

Kenneth Labombard came the closest.

12/02/2025

Some decent numbers on this 6.2 swap G8. 400whp through an automatic on 87 octane.