Gunny's V-Twin

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Gunny's V-Twin Motorcycle service and repair shop

09/19/2026

🔥 **HERE WE GO AGAIN!** 🔥

Pulled this **131** that was built by another shop. We’re rebuilding it for one of our shop bikes, and once we tore it down, we found exactly why you **DON’T JUST BOLT PERFORMANCE PARTS ON AND CALL IT A BUILD.** 🤦‍♂️💀

We put an indicator on the crank.

👉 **PINION SHAFT RUNOUT: .011"!** 👈

Yep. **ELEVEN THOUSANDTHS.**

Harley-Davidson allows up to **.012"**.

But here’s where it gets good... 🍿

The shop that built this engine installed an **S&S CAM PLATE AND OIL PUMP.**

S&S maximum allowable pinion shaft runout?

👉 **.005"**

This crank was running at **MORE THAN TWICE THE RUNOUT S&S ALLOWS!** 🤯

And apparently nobody thought putting a dial indicator on the crank BEFORE installing the S&S parts might be a good idea.

**CHECK OUT THE CRANK PINION.** 👀💥

That damage didn't magically appear.

This is exactly why **“IT'S WITHIN HARLEY SPEC” DOESN'T MEAN S**T** when the parts you're installing have a completely different requirement.

A performance engine isn't built with a parts catalog and an impact gun.

🔥 **YOU MEASURE IT.**
🔥 **YOU VERIFY IT.**
🔥 **YOU MAKE SURE THE PARTS ARE COMPATIBLE WITH WHAT YOU ACTUALLY HAVE.**
🔥 **THEN YOU BUILD IT.**

At **Gunny’s V-Twin**, .011" isn't getting a shrug and a “send it.”

This crank is coming OUT.

👉 **OFF TO DARKHORSE.** 🐎

It'll come back **STRAIGHT**, and then we'll build this 131 the way it should've been built the first damn time. 🔧💪🇺🇸

Might even upgrade it some. Stay tuned for updates as the build continues.

**MEASURE TWICE. BUILD IT ONCE.**

⚙️ **GUNNY’S V-TWIN PERFORMANCE & DYNO TUNING** ⚙️
🇺🇸 **100% VETERAN OWNED & OPERATED** 🇺🇸

🏁 **2011 STREET GLIDE RE-TUNE** 🏁This 2011 Street Glide came into the shop after having ** TTS MASTERTUNE 2 (HARLEY) 150...
07/30/2026

🏁 **2011 STREET GLIDE RE-TUNE** 🏁

This 2011 Street Glide came into the shop after having ** TTS MASTERTUNE 2 (HARLEY) 150 cams installed** and being told it had been tuned. The customer's complaint? **Poor acceleration, weak performance, and disappointing rideability.**

After checking the ECM, the problem became obvious. The **ECM was still running the stock Harley-Davidson calibration**—it had **never actually been tuned** after the cam installation. A cam swap without a proper calibration leaves a lot of performance on the table.

We performed a **complete custom dyno tune with TTS MASTERTUNE 2 (HARLEY)**, optimizing the fuel and ignition tables for the new combination.

📈 **Results:**
✅ Horsepower increased from **90.24 HP** to **94.80 HP**
✅ Torque increased from **98.10 ft-lbs** to **110.57 ft-lbs**
✅ Much stronger acceleration
✅ Improved throttle response
✅ Better rideability throughout the RPM range

The numbers tell part of the story—but the biggest improvement was how the motorcycle **actually rides.** A proper tune transforms the entire riding experience.

🇺🇸 **Gunny's V-Twin**
🏍️ **100% Veteran Owned and Operated**
💻 **Performance Builds • Dyno Tuning • TTS MasterTune Specialists**

💪🇺🇸🏍️📈

07/28/2026

🔥🏍️ **THE WAIT IS ALMOST OVER...** 🏍️🔥

**2022 STREET GLIDE ST • T-MAN 148 CID • ALMOST READY TO ROLL!**

Months of planning, countless hours in the shop, and an unbelievable list of premium performance parts have all led to this point.

The engine break-in is just about complete, and we've gathered enough dyno data to begin building a custom calibration with ** TTS MASTERTUNE 2 (HARLEY)** specifically for this **148 CID beast**.

**Next up is VTune, followed by dialing in the Torque Management tables** to make sure this engine delivers every bit of its power as smoothly and effectively as possible. That's where the fine-tuning happens—and where a properly calibrated Harley really separates itself from the rest.

There are **NO canned tunes** here. Every table is built around **this engine**, **this combination**, and **this motorcycle**.

The goal isn't just a big dyno number... it's creating a motorcycle with brutal, usable horsepower and torque, razor-sharp throttle response, outstanding rideability, and the reliability to enjoy it for years to come.

💥 **VTune is next...**
💥 **Torque Management is after that...**
💥 **Then it's time to see what this 148 really puts to the tire!** 📈🔥

🇺🇸 **Gunny's V-Twin**
🏁 American V-Twin Performance • Engine Builds • Dyno Tuning
⚙️ Tuned with **TTS MasterTune**
🦅 **100% Veteran Owned and Operated**

🔥🏍️🇺🇸

🏁 **2022 Street Glide ST 148 Build brakes Update!** 🏁The stopping power is catching up to the horsepower! 💪🔥The ** Brake...
07/24/2026

🏁 **2022 Street Glide ST 148 Build brakes Update!** 🏁

The stopping power is catching up to the horsepower! 💪🔥

The ** Brakes Racing front and rear brake rotors** are now installed, along with **Brembo calipers** using a **Kraus Moto rear radial caliper mount** and **Twisted T Industries front radial caliper mounts**. With the new ** T-MAN PERFORMANCE 148 CID** engine, this bike is going to need every bit of braking performance it can get!

This build isn't just about making big power—it's about building a complete motorcycle that accelerates, handles, and stops with confidence. More upgrades are still to come before this beast hits the dyno! Stay tuned... 👀🏍️

🇺🇸 **Gunny's V-Twin**
🔧 **Performance Builds • Dyno Tuning with TTS MASTERTUNE 2 (HARLEY)**
🦅 **100% Veteran Owned and Operated**

🏁 **2022 STREET GLIDE ST SHOP BIKE 148 BUILD UPDATE!** 🏁🔥The **2022 Street Glide ST** is getting closer to making its fi...
07/24/2026

🏁 **2022 STREET GLIDE ST SHOP BIKE 148 BUILD UPDATE!** 🏁🔥

The **2022 Street Glide ST** is getting closer to making its first full-power dyno pulls! 💪

We installed an **RK 530 ProDR Drag Racing chain** and immediately realized it's an **old-school non O-ring chain**. 🤦‍♂️ Great for dedicated drag race applications, but for a street bike that may hit the run what you brung races we may end up swapping back to the **RK 530 O-ring chain** for better longevity and lower maintenance. Time will tell! ⚙️

While we were at it, we knocked out a bunch of the finishing details:
🔹 RK 530 chain drive installed
🔹 T-MAN PERFORMANCE Head breather system finished
🔹 Trask Performance Transmission breather completed
🔹 T-MAN PERFORMANCE Dipstick breather installed
🔹 Primary back together
🔹 Starter installed
🔹 New bushings installed in the ** Motor Company**
🔹 New friction discs installed in the ** Clutches and Cables**

🎥 And the best part...

**The fresh-built T-MAN PERFORMANCE 148 CID engine fired up for the very first time!** 🇺🇸🔥

It sounds **solid, crisp, and absolutely mean.** Everything is looking exactly like we'd hoped after this build.

Now it's time for the part we've been waiting for...

📈 **Next stop: the dyno for a complete TTS MASTERTUNE 2 (HARLEY) calibration.** We'll dial in every table for maximum horsepower, torque, throttle response, rideability, and proper torque management.

Stay tuned... this one should make some serious numbers! 😈🏍️💨

🎥 **Check out the first startup video!**

🇺🇸 **Gunny's V-Twin**
🏍️ Performance Builds • Dyno Tuning • Service
🎖️ **100% Veteran Owned and Operated**

**💪 Another Harley Breathing the Way It Should! 🏍️🔥**This **2018 Road Glide Ultra** came in looking for a little more po...
07/23/2026

**💪 Another Harley Breathing the Way It Should! 🏍️🔥**

This **2018 Road Glide Ultra** came in looking for a little more power, stronger passing performance, and improved rideability.

**Starting combination:**
✅ High-flow air cleaner
✅ De-catted stock head pipe
✅ Vance & Hines slip-ons

To make it reliable as well as powerful, we upgraded far more than just the cam.

🔧 **Installed:**
⚙️ TTS MASTERTUNE 2 (HARLEY) 100 Camshaft – excellent low-end torque and real-world passing power
⚙️ S&S Cycle, Inc. Cam Plate & Oil Pump – replacing the insufficient OEM components known for oiling issues on these engines
⚙️ S&S Cycle, Inc. Precision Tappets
⚙️ S&S Cycle, Inc. Adjustable Pushrods
⚙️ Andrews Precision Crank Cam Sprocket – replacing the sloppy factory sprocket for more accurate cam timing and valve events

📈 **Results:**
💥 **102.2 HP**
💥 **115.9 lb-ft Torque**

For a mild touring cam, these are excellent numbers with a much stronger torque curve where this rider will actually use it.

You'll notice a small torque dip around **2,000 RPM at wide-open throttle**. That's caused by the **very free-flowing exhaust combination** (de-catted stock header with Vance & Hines slip-ons), which sacrifices a little exhaust scavenging and cylinder filling at low RPM. During normal riding and part-throttle operation, the bike is smooth, responsive, and significantly stronger than when it arrived.

At **Gunny's V-Twin**, we don't just install parts—we build combinations that work together and tune them correctly with **TTS MasterTune** for the best throttle response, drivability, reliability, and performance.

🇺🇸 **Gunny's V-Twin**
🏍️ Performance • Dyno Tuning • Engine Builds
📊 ** TTS MASTERTUNE 2 (HARLEY) MasterTune Specialist**
🇺🇸 **100% Veteran Owned and Operated**

🏍️🇺🇸 **SHOP NOTICE** 🇺🇸🏍️**Gunny's V-Twin will be CLOSED from August 2nd through August 17th** while we're attending the...
07/17/2026

🏍️🇺🇸 **SHOP NOTICE** 🇺🇸🏍️

**Gunny's V-Twin will be CLOSED from August 2nd through August 17th** while we're attending the **Sturgis Motorcycle Rally!** 🤘🔥

We **still have a few appointment openings before August 2nd**, so if your Harley needs any work before then, now's the time to get on the schedule! 🛠️⚙️

✅ Performance Upgrades 💪
✅ Dyno Tuning with **TTS MasterTune** 📈🔥
✅ Service & Maintenance 🔧
✅ Repairs 🛞

Don't wait until the last minute—our remaining spots will fill up quickly! 📞

🇺🇸 **Gunny's V-Twin** 🇺🇸
💥 **100% Veteran Owned and Operated** 💥

🏍️ Ride Safe. Ride Hard. We'll see you in Sturgis! 🤘🇺🇸

🏁 **Another great example of why a proper dyno tune matters!** 🏁This **2016 Harley-Davidson** came to **Gunny's V-Twin P...
07/10/2026

🏁 **Another great example of why a proper dyno tune matters!** 🏁

This **2016 Harley-Davidson** came to **Gunny's V-Twin Performance & Dyno Tuning** with a **D&D 2-1 Exhaust** and **High Flow Air Cleaner** already installed... but it had **never been tuned** after the upgrades.

📈 **No additional performance parts were installed.**
The **only change** was a **top-quality dyno tune using TTS MASTERTUNE 2 (HARLEY)** on the **factory ECM**.

**Results:**
🔥 **Power:** 78.8 HP ➡️ **87.1 HP** (+8.3 HP)
💪 **Torque:** 98.4 lb-ft ➡️ **106.6 lb-ft** (+8.2 lb-ft)

But the numbers only tell part of the story...

✅ Smoother throttle response
✅ Better rideability
✅ Correct air/fuel ratio
✅ Reduced engine heat
✅ Improved reliability
✅ More usable power throughout the RPM range

Anyone can bolt on performance parts. Getting them to work together correctly takes **a proper dyno tune**.

At **Gunny's V-Twin**, we tune with **TTS MasterTune** because it gives us complete control of the factory ECM while retaining OEM features and delivering the precise calibration your engine deserves.

🇺🇸 **Gunny's V-Twin Performance & Dyno Tuning**
**100% Veteran Owned and Operated**

🦅🏍️💥🔥

🔥 **148 / Transmission Upgrade!** 🔥Another big step closer on the **148 CID shop bike**! 💪🏁The **CryoHeat Transmission**...
07/09/2026

🔥 **148 / Transmission Upgrade!** 🔥

Another big step closer on the **148 CID shop bike**! 💪🏁

The **CryoHeat Transmission** is officially installed! 🔥⚙️ They claim it's built to handle **200+ HP & Torque**, and we're looking forward to putting that to the test on the dyno. 👊

✅ CryoHeat Transmission installed
✅ Trask Performance Transmission Breather Top Cover installed
⏳ Waiting on the **D&D Exhaust**
⏳ Waiting on the **RK 530 ProDR Drag Racing Chain**

Just a few more performance upgrades to go before this beast is ready to fire up. Stay tuned... the best is yet to come! 😎🏍️💥

🇺🇸 **Gunny's V-Twin**
🦅 **100% Veteran Owned and Operated** 💙❤️

Address

1080 N FM 2353 Unit 309
Graford, TX
76449

Opening Hours

Tuesday 10am - 6pm
Wednesday 10am - 6pm
Thursday 10am - 6pm
Friday 10am - 6pm
Saturday 10am - 2pm

Telephone

+19404456886

Website

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