Optimizing Performance: Camshaft Exhaust Duration Testing on Small Block Chevy

- Authors
- Published on
- Published on
- Name
- By Dushyant
- (@dishs)
In a thrilling episode of Engine Masters by MotorTrend Channel, the team delves deep into the heart of engine performance by testing various camshafts with different exhaust durations. They focus on split pattern cams, where the exhaust duration exceeds the intake duration, to uncover the impact on power delivery. With custom camshafts featuring a 268° intake lobe and varying exhaust durations, the team sets out to push the boundaries of performance limits. By exploring the effects of extreme exhaust duration splits on a small cubic inch big block Chevy engine with high compression and top-notch cylinder heads, they aim to unlock the secrets of optimal camshaft configurations.
As the team tests camshafts with 272°, 278°, and 284° exhaust durations, they meticulously analyze power numbers and torque curves to decipher the subtle yet crucial differences in engine performance. Through intense scrutiny, they uncover how changes in exhaust duration can influence torque delivery and power output across different RPM ranges. Delving into the intricate trade-offs involved in altering exhaust duration, the team navigates the delicate balance between sacrificing bottom-end torque for heightened top-end power. They ponder the repercussions of early exhaust valve opening on cylinder pressure dynamics during the power stroke and speculate on the potential outcomes of further increasing exhaust duration on overall engine performance.
With a keen eye for detail and a thirst for uncovering the nuances of engine behavior, the team embarks on a quest to determine whether there is such a thing as having too much exhaust duration on a camshaft. By pushing the limits with a cam featuring a whopping 284° exhaust duration, they compare power numbers and torque curves to previous tests to gauge the impact of extreme exhaust duration splits on engine dynamics. As they scrutinize the results and delve into the realm of resonant wave phenomena, the team grapples with the complexities of optimizing camshaft configurations for peak performance. Amidst the roar of engines and the thrill of experimentation, Engine Masters delivers yet another exhilarating exploration into the realm of automotive engineering.

Image copyright Youtube

Image copyright Youtube

Image copyright Youtube

Image copyright Youtube
Watch Do Longer Camshaft Splits Affect Performance? | Engine Masters on Youtube
Viewer Reactions for Do Longer Camshaft Splits Affect Performance? | Engine Masters
Difference between cam 1 and cam 3 with nitrous
Effects of changing lobe separation angle, exhaust duration, and exhaust tube length
Impact of lift changes on engine performance
Interest in a skidoo CVT type system for cam and crank linkage
Importance of head flow in determining camshaft specifications
Request for more original content and videos
Inquiry about accessing the latest Roadkill episodes in the UK
Speculation on Engine Masters being canceled
Request for compression numbers
Suggestions to run cams with different lifts and explore VTEC and crank cam ratio
Comments on the hosts' hair compared to a guest's
Question about starting with a single pattern for baseline comparison
Various reactions, including calling someone a nerd and expressing boredom
Related Articles

Neo Firefly: Stylish Compact Car Redefining Urban Driving
Discover the Neo Firefly, a stylish and innovative compact car from China. With a unique design, upscale interior, and efficient packaging, the Firefly offers a luxurious yet practical driving experience. Explore its features and potential impact on future car designs.

Lucky Costa's Workshop Tour: Classic Cars, Gearstar Transmissions, and More!
Explore Lucky Costa's workshop in this MotorTrend Channel episode. Witness his car projects, including a revamped 63 Ford Galaxy and the iconic Project X57 Chevy. Discover his passion for Gearstar transmissions and follow him on social media at Mobile Techlucky for more automotive adventures.

Aston Martin Vantage vs. Porsche 911 GTS: Supercar Showdown
The MotorTrend Channel compares the Aston Martin Vantage and Porsche 911 GTS on a challenging road to see if the Vantage can rival supercars. The 911 impresses with purity of experience and hybrid integration, while the Vantage offers a unique driving character and stunning design, positioning itself as a strong contender in the sports car market.

2026 Toyota RAV4: Hybrid Powertrain, Advanced Tech, and Enhanced Safety
The 2026 Toyota RAV 4 introduces a hybrid-only powertrain with unique design elements, advanced tech features, and enhanced safety options.