Stock C8 ZR1 Hits 941 WHP On 93 Pump Gas At House Of Boost
A stock C8 ZR1 dyno session at House of Boost in Kansas City, Missouri, told us everything we needed to know about where this platform sits before a single bolt-on. Ninety-three pump gas, heat-soaked engine, zero modifications, and the Dynojet 224x came back with 894.96 wheel horsepower and 850.16 lb-ft of torque on a car that had never seen a wrench for performance purposes.
House of Boost mixed in half a can of BOOSTane Professional, 16-oz, into the tank, and strapped it back down for a second pull. Because the engine was still heat-soaked from the first run, the 941.88 wheel horsepower and 857.37 lb-ft of torque that came back on that second C8 ZR1 dyno pull carry more weight than the 47-horsepower gap alone suggests.
What Is BOOSTane Professional And Why Does It Work On A C8 ZR1 Dyno?
When you mix BOOSTane Professional into pump gas, it raises the effective octane rating, which gives the ECU room to advance timing without the engine knocking under load. On 93, a high-compression engine like the LT6 already works close to the edge of what the fuel allows, and BOOSTane pushes that edge back. As a result, the ECU finds the timing it was looking for, combustion cleans up, and the power follows without a single hardware change.
Why The LT6 Responds So Well
The LT6 flat-plane crank in the C8 ZR1 ranks among the most efficient naturally aspirated engines GM has ever put in a street car. Because of that efficiency, the engine is already extracting everything available from whatever fuel you feed it. When the fuel quality goes up, the timing follows, and the dyno sheet reflects it immediately. For instance, a 47-horsepower gain from a single 16-oz treatment of BOOSTane Professional tells you exactly how much timing the factory tune was leaving on the table due to fuel limitations on 93 pump gas.
What The Numbers Mean For What Comes Next
House of Boost has earned their reputation in the automotive industry because they run honest back-to-back pulls on the same car under the same conditions. There is no favorable cool-down between runs, no timing the baseline pull for a bad result, and therefore what you see on that C8 ZR1 dyno sheet reflects what the car actually does. That consistency matters when you make real decisions about a build.
The owner is considering coming back for downpipes, an intake, and a tune. Since a heat-soaked stock LT6 already cracked 941 wheel horsepower on pump gas and half a can of BOOSTane Professional, the path to 1,000 wheel horsepower gets a lot shorter once exhaust flow opens up and a calibration builds around the full combination.
If you want to dig deeper into the C8 platform, our coverage of the Corvette Grand Sport debuting with the 535-HP LS6 shows where GM is taking the next generation of this small block.
Frequently Asked Questions
On a Dynojet 224x, a bone stock C8 ZR1 dyno pull in heat-soaked conditions returned 894.96 wheel horsepower and 850.16 lb-ft of torque at House of Boost in Kansas City. With 16 oz of BOOSTane Professional added to the fuel, that number jumped to 941.88 wheel horsepower on the very next pull.
On a high-compression engine like the LT6 that already pushes the limits of 93 octane, yes. BOOSTane Professional raises the effective octane rating of pump gas, which gives the ECU room to advance timing under load. On the C8 ZR1 at House of Boost, half a can of BOOSTane Professional produced a 47 wheel horsepower gain between back-to-back pulls on the same heat-soaked engine.
The owner is planning on returning to House of Boost for downpipes, an intake, and a full tune. Starting from a C8 ZR1 dyno baseline of 941 wheel horsepower on a stock engine with BOOSTane Professional, the combination puts 1,000 wheel horsepower well within reach once the exhaust flow opens up and the calibration builds around the new parts.
Key Takeaways
- The C8 ZR1 dyno session at House of Boost showed 894.96 wheel horsepower stock and increased to 941.88 with BOOSTane Professional.
- BOOSTane raises the effective octane, allowing the ECU to advance timing, which results in higher horsepower without hardware changes.
- The efficient LT6 engine responds well to higher fuel quality, evident in the significant 47-horsepower gain from BOOSTane addition.
- The owner plans to return for performance upgrades like downpipes and a tune to reach 1,000 wheel horsepower.
- Consistent dyno results ensure accurate data, guiding future performance decisions for the C8 ZR1 dyno.
