Procharged Shelby GT350 vs C7 Z06

A Ford Shelby GT350 built by Cordes Performance Racing runs an F1A Procharger, ARH long tube headers, and E85 fuel to a claimed 923 horsepower at the wheels — on a completely stock bottom end. At Shifts3ctor’s California Airstrip Attack in Coalinga, it lines up against a Chevrolet C7 Corvette Z06 kept close to factory spec. The horsepower gap looks enormous on paper. Watch to see whether launch and traction close it at all.

Nine hundred and twenty-three horsepower at the rear wheels, run through a bottom end that’s never been touched, on a car that started life as a factory Shelby GT350. That’s not a typo, and it’s not a claim from a dyno chart nobody can verify — it’s the headline number behind what’s billed as the world’s first F1A Procharged GT350, filmed lining up against a Corvette Z06 on a closed-off airstrip in Coalinga, California. The pairing sounds unfair on paper. What actually happens once both drivers stage is a different story entirely.

The Build: F1A Procharger on a Stock Bottom End

The Build: F1A Procharger on a Stock Bottom End
The GT350 in this race was built by Cordes Performance Racing around an F1A Procharger supercharger, a centrifugal unit favored by tuners chasing serious horsepower without immediately reaching for forged internals. ARH long tube headers handle exhaust flow, paired surprisingly with the factory OEM mufflers rather than a full aftermarket exhaust — an unusual choice that suggests the build prioritized power delivery and drivability over outright sound. A Fore fuel system feeds the engine, and the whole combination runs on E85, a fuel choice that lets tuners push higher boost and more aggressive timing than pump gas would safely allow.

⚑ Featured Gear

Start Car Conversations →

As an Amazon Associate I earn from qualifying purchases.

923 Horsepower, Stock Bottom End

923 Horsepower, Stock Bottom End
The detail that stops most GT350 owners cold is that this car makes 923 horsepower at the rear wheels on the factory bottom end — no forged pistons, no aftermarket rods, none of the internal reinforcement most builds add before pushing anywhere near four figures. That’s a serious statement about how much headroom Ford’s Voodoo-adjacent GT350 platform actually has when a tuner like Cordes Performance Racing knows exactly where the limits are and how to stay just inside them without turning the engine into a grenade.

The Rival: A Corvette Z06 Kept Close to Stock

The Rival: A Corvette Z06 Kept Close to Stock
Lining up against that much boosted horsepower is a Chevrolet C7 Corvette Z06, running an automatic transmission and described as close to stock condition. The C7 Z06 left the factory with a supercharged LT4 V8 already rated well north of 600 horsepower, making it a legitimately quick car in its own right — just not in the same universe as a Procharged GT350 pushing past 900 at the wheels. The mismatch on paper is part of what makes the pass worth watching all the way through the traps.

Shifts3ctor’s California Airstrip Attack

Shifts3ctor’s California Airstrip Attack
This race was filmed at Shifts3ctor’s California Airstrip Attack, an event that takes cars off traditional drag strips and onto a closed runway in Coalinga, a small Central Valley town that has become an unlikely hub for exactly this kind of grassroots high-horsepower racing. Airstrip events like this one give tuners and builders room to run cars that might not fit neatly into a sanctioned drag strip’s safety classes, particularly builds pushing boost numbers this far outside the norm without a full cage or parachute.

Why a Stock Bottom End Matters to Builders

Why a Stock Bottom End Matters to Builders
For anyone following the Mustang tuning scene, the phrase “stock bottom end” carries real weight. Building nearly a thousand horsepower without swapping pistons, rods, or a crankshaft means less downtime, lower build cost, and a car that can go back to being a daily-capable machine between track days rather than a trailer queen. It’s the kind of detail that separates a show build from a build that’s actually meant to be driven hard and repeated, and it’s exactly the sort of specification builders like Cordes Performance Racing use to market their tuning packages to other GT350 owners.

Automatic vs. Boosted Manual: A Different Kind of Fight

Automatic vs. Boosted Manual: A Different Kind of Fight
The C7 Z06’s automatic transmission adds another layer to the comparison, since automatic-equipped cars often launch more consistently than a driver working a clutch, even against a car with a dramatic horsepower advantage. That consistency doesn’t close a gap this large, but it does mean the race isn’t purely a horsepower contest — reaction time, launch control calibration, and how cleanly each car hooks up on the airstrip surface all still factor into who crosses the stripe first.

What This Says About the GT350 Platform

What This Says About the GT350 Platform
Ford’s GT350 was never marketed as an easy platform to boost, thanks to its flat-plane-crank V8 and tighter factory tolerances compared to a traditional pushrod V8. A build like this one, verified at 923 rwhp on the stock bottom end, is a real data point for anyone wondering just how far the platform can be pushed before internals become the limiting factor — and for now, the answer appears to be further than most owners would have guessed possible on factory parts.

Reading the Result Beyond the Trap Speed

Reading the Result Beyond the Trap Speed
Whatever the trap speed and elapsed time end up showing, the more interesting number for tuners watching at home is how the GT350’s factory internals held up under Procharger boost run after run at the event, not just for one clean pass. A build this aggressive only matters if it survives being driven the way it was built to be driven, and airstrip events like Shifts3ctor’s give exactly that kind of repeated, real-world stress test that a single dyno pull never can.

A Build Worth Watching Long-Term

A Build Worth Watching Long-Term
Cordes Performance Racing built this GT350 as a demonstration of what the platform can handle, and demonstrations like it tend to shape what the rest of the tuning community attempts next. If a stock bottom end can survive 923 horsepower through repeated airstrip passes, expect more shops to chase similar numbers on similarly unmodified engines, at least until someone finds where the real ceiling actually is. Every additional data point from events like this one gives the next builder a slightly better map of exactly how far a factory Voodoo engine can go before something has to give.

See the full video above and join the conversation in the comments.

Share your thoughts in the comments below.

Republished by Blog Post Promoter