Grayless Automotive and Performance

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Grayless Automotive and Performance

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ASE Master Certified 🛠️ | GM Specialists & Daily Repair | Home of the 3500hp Mainline HubPro Dyno 🏁 | Frankfort, IN 📍

General automotive repair, cam swaps, engine swaps, transmissions, differentials, A/C repair plus much more

05/27/2026

She's not just pretty. She's about to be MEAN. 🔥
This C7 Z06 rolled into the shop for a serious LT4 build, and we're just getting started.
🔧 GPI () cam + Brian Tooley Racing valve springs
💨 Kong Performance ported blower
💉 Wisher Performance AuxJection
🔌 ECM pinning + custom tune
Each piece is dialed in to work together — that's what separates a real build from a bolt-on parts list. The Kong-ported blower moves a ton more air than the factory supercharger, the GPI cam wakes up the LT4, and the Wisher aux injection makes sure the fuel system can actually keep up with all that boost.
Power goal? We'll see where she lands on our Mainline dyno. But with this combo, it's gonna be a LOT.
Stay tuned — we'll be posting the build video and dyno results over the next week.
📍 Grayless Automotive — Frankfort, IN
📞 (765) 357-4666
💬 Message us to talk about your Z06 build

05/26/2026

SOUND ON 🔊 Which car won the hub dyno challenge? 👑
Six builds. One dyno. Full send.
Turbo spool, redline screams, and one absolute monster pull that had the whole shop yelling.
Drop your pick 1–6 in the comments 👇
Send this to whoever in your group chat thinks their car is the fastest 😏
📍 Grayless Automotive — Indiana dyno tuning & performance builds
📩 DM "DYNO" to book your pull

05/25/2026

Today, we remember.

Memorial Day isn't about sales, cookouts, or the unofficial start of summer.
It's about the men and women who never made it home — who gave everything so the rest of us could live free.

From all of us at Grayless Automotive, thank you to the families who lost someone, the brothers and sisters in arms who carry their memory, and the Hoosiers who answered the call.

We remember them today, and every day. 🇺🇸

05/24/2026

0.0233 seconds.

That's the closest finish in the 110-year history of the Indianapolis 500 — and we just watched it happen. 🏁

Felix Rosenqvist held off David Malukas in a photo finish at the 110th Running of the Indy 500 this afternoon, capping a wild race with a record 70 lead changes, a one-lap shootout, and Caitlin Clark commanding the drivers to start their engines.

The cars that finish at the front of a race like that aren't won on the last lap. They're won in the garage — tire pressure, brake balance, fuel strategy, every detail dialed in long before the green flag drops.

Your daily driver works the same way. The little stuff you stay on top of now is what keeps you off the shoulder later.

Hope every Hoosier had a good race day. 🇺🇸

Who'd you have your money on this year — did anyone call Rosenqvist?

05/22/2026

When the tuner tests his own beast. 🦇🔊

Caleb Wisher from Performance brought his personal Cadillac CT5-V Blackwing to Grayless Automotive for some precision dyno testing on our Mainline Hub Dyno.

Why use a Hub Dyno for a supercharged 6.2L V8?
Bolting directly to the hubs eliminates all tire slip and traction issues. No strapped-down roller inconsistencies—just dead-accurate, repeatable horsepower and torque data for high-performance tuning.

Listen to that supercharger scream. What do you think this Blackwing put down to the hubs? Drop your guess in the comments! 👇

Need dead-accurate numbers for your build? Book your dyno session at Grayless Automotive in Mulberry, Indiana. Link in bio. 🔗

05/19/2026

Why is your 5.3 or 6.2 ticking?

⚙️ Meet AFM/DFM: Active and Dynamic Fuel Management deactivate cylinders at cruise to save gas — sounds smart, until those collapsed lifters take out a camshaft.

💀 The Tick of Death: That cold-start tick, misfire, or oil consumption isn't your imagination. It's a lifter on its way out, and once it goes, it takes the cam with it.

🔧 The Permanent Fix: An AFM/DFM delete + custom tune disables the system for good. No more lifter failures, no more wondering if today's the day. Done right, done once.

Got a 2007+ Silverado, Sierra, Tahoe, Suburban, Yukon, or Escalade with a tick? Don't wait for the rebuild bill — by the time the cam goes, you're looking at a teardown that costs 4x what the delete would have.

📞 Call Grayless Automotive & Performance: (765) 357-4666
📍 270 E County Rd 800 N, Frankfort, IN
🔧 ASE Master Certified | GM Specialists | 20+ Years Experience

📍 Frankfort, Indiana
📍 Clinton County, Indiana

05/18/2026

Leveling up this brand-new 2026 Silverado. 🛻📏

There is a massive level of trust involved when a customer hands over the keys to a truck that barely has any miles on the odometer. We love that our community trusts Grayless Automotive & Performance with their brand-new rigs right off the dealer lot.

This evening, we had this gorgeous black 2026 Chevy Silverado in the bay for a front-end leveling kit.

Why level a brand-new truck?

📉 Fixing the "Rake": Trucks leave the factory with the front end sitting noticeably lower than the rear (designed to level out when towing heavy payloads).

💪 The Stance: A leveling kit raises the front suspension to match the rear, instantly transforming the truck from a standard commuter to a tough, aggressive hauler.

🛞 Tire Clearance: It provides the crucial fender clearance needed to run those beefy, aggressive all-terrain tires without rubbing.

We got this rig up on the lift, knocked out the install, and got it back on the ground looking exactly how a truck should look.

Ready to get rid of that factory nose-dive? From leveling kits to full suspension lifts, we get your truck sitting right.

📍 Book your suspension upgrade: www.graylessautomotive.com

05/15/2026

Things are about to get loud. 👀🔥

We take pride in keeping your daily drivers and family haulers reliable, but high-performance builds like this are where things get really fun.

Check out this absolutely stunning bronze Corvette C7 currently taking up residence in the bay. It’s here for open-heart surgery: a full cam swap and a few extra performance goodies to completely wake up this engine.

A proper cam swap isn't just about delivering massive power gains throughout the RPM range—it’s about giving the car that aggressive, unmistakable, heavy-breathing V8 "chop" at idle.

We are currently deep in the engine bay getting this new valvetrain perfectly dialed in. Stay tuned, because you are absolutely going to want to hear the start-up video when this monster breathes on its own for the first time.

Ready to take your build to the next level? From cam swaps to superchargers, we build horsepower that lasts.
📍 Let's talk performance: www.graylessautomotive.com

05/14/2026

The dreaded "No Start." 🛻🚫

There's nothing more frustrating than turning the key and getting nothing but a crank. This Chevy Silverado SS was towed in suffering from a classic "no start" condition.

After a proper diagnostic test to ensure it wasn't a battery, starter, or electrical issue, we pinpointed the exact point of failure: a dead fuel pump.

As you can see in the second photo, getting to a fuel pump isn't a quick under-the-hood fix. It requires dropping the entire fuel tank out from under the truck. It’s heavy, dirty work, but getting these workhorses back on the road is what we do best.

Stranded? Don't stress. We'll find the problem and get you back in the driver's seat.
📍 Schedule your repair: www.graylessautomotive.com

05/13/2026

Top-down season is officially here. ☀️🏁

This pristine Yellow Camaro convertible is dialed in and ready for weekend cruising. The owner brought it to us for a perfect blend of preventative maintenance and performance enhancement.

Before making more power, you have to make sure the foundation is solid. We got this 6.2L breathing right with a fresh set of spark plugs, and kept the drivetrain shifting smoothly with a full transmission filter and fluid flush.

Once the maintenance was checked off, it was time to wake it up. To top it all off, it received a custom tune on HP Tuners from our friends over at Wisher Performance ()

It drives like an absolute dream, shifts perfectly, and is officially ready to hit the Indiana backroads.

Whether you need standard maintenance to keep your daily on the road, or performance tuning for your weekend toy—we handle both. Is your ride ready for the summer?

📍 Get on the schedule: www.graylessautomotive.com

05/12/2026

🔧 TECH TIP TUESDAY 🔧
Cruise night season is HERE. 🏁 But before you fire up that LS, LT, or built small block and roll into the Frankfort square… we gotta talk.

Myth: "I'll just throw a tune on it from a generic file off the internet." 🚫
Reality: Every engine is different. Same parts, same brand, same year — and the air/fuel curves still won't match.

Here's what a REAL dyno tune actually does:
✅ Measures your engine's actual power and torque (not "estimated" 🙄)
✅ Dials in air/fuel ratio so you don't burn a piston at WOT
✅ Optimizes timing for YOUR fuel, YOUR altitude, YOUR build
✅ Catches problems BEFORE they gr***de your motor
✅ Gives you a printed sheet to brag with at the cruise-in 📄💪

We run a Mainline Hub Dyno rated to 3,500hp — yes, three thousand five hundred. From your weekend Camaro to a built-to-the-moon truck pull rig, we can pull it down and tune it right.

💬 What are you bringing out this season? Drop a pic of your build below 👇 — let's see Clinton County's finest!

ASE Master Certified | GM Performance Specialists
📍 270 E County Rd 800 N, Frankfort, IN
📞 (765)357-4666

Address

Frankfort, IN
46041

Telephone

+17654901541

Website

https://graylessautomotive.com/

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