What year did Chevy 350 have roller cam?
The Chevy 350 engine is a beloved powerhouse in the automotive world, known for its reliability and performance. One of the significant advancements in its design was the introduction of the roller camshaft, which improved efficiency and power output. In this article, we will explore when the Chevy 350 began using roller cam technology and the implications of this change for car enthusiasts and mechanics alike.
The Transition to Roller Camshafts
The Chevy 350 engine first featured a roller camshaft in 1985. This innovation marked a pivotal moment in the engine's evolution, enhancing its performance and longevity. Roller camshafts reduce friction between the cam and the lifters, allowing for smoother operation and better power delivery.
Benefits of Roller Camshafts
Switching to roller cam technology brought several advantages to the Chevy 350 engine:
- Increased Efficiency: Roller cams allow for more precise valve timing, which can lead to improved fuel efficiency.
- Enhanced Performance: The design of roller cams enables higher RPMs and better overall power output.
- Reduced Wear: With less friction, roller camshafts experience less wear over time, contributing to the engine's longevity.
- Better Throttle Response: The improved design allows for quicker and more responsive throttle action.
Conclusion
The introduction of roller camshafts in the Chevy 350 engine in 1985 was a significant advancement that has had lasting effects on performance and reliability. For car enthusiasts and mechanics, understanding these changes is crucial for maintenance and performance tuning. Whether you're restoring a classic or simply looking to enhance your vehicle's capabilities, the roller cam technology in the Chevy 350 is a key feature to consider.
Frequently Asked Questions
What year did Chevy have lifter problems?
The models affected are Chevrolet Silverado trucks from 2016 to present and, most particularly the 2021 models with 5.3L and 6.2L engines.
Can you run roller lifters on a solid lifter cam?
To successfully run hydraulic-roller lifters on a solid-roller profile generally requires that the solid cam profile be a tight-lash grind (under 0.020-inch hot) in the first place, with less than 30 degrees difference between the 0.020- and 0.050-inch duration specs.
How much horsepower does a roller cam add?
But with the better springs, the horsepower curve (HP2) continues to climb right up to 6,000 rpm before it tips over at 6,100 rpm. Peak power stabilized at 430 hp, which equates to a solid 25-plus-horsepower improvement at the reasonable 6,000-rpm peak.
What year was the Silverado bad engine?
From 2012 to 2019, each Silverado year model was littered with issues. The 2012 and 2013 year models have a few dozen reported problems, mainly about faulty engines and transmissions. 2014 Silverados have the highest number of complaints by far, with a significant portion of them relating to A/C and heating defects.
What's the difference between a roller cam and a regular cam?
Roller cams have lightning fast ramp speeds. In other words the valves snap open and slam shut much faster than flat tappet cams, which means the valves are open wider for a longer period of time which makes for much more flow. More flow = more power.
What year is the best Chevy 350 engine?
The 1970 LT-1 version is generally considered one of the best of all the iterations.
When did roller lifters come out?
Roller can & lifters were first produced, by Chet Herbert, in the early '50's for the GMC & Chev 6 cylinders, long before the SBC but, I would guess that the SBC and/or the Chrysler hemi were the first V8's to have them.
Is a roller cam worth it?
Although roller-tappet cams are considerably more expensive, they make better economic sense in the long run. Plus, a roller is not as sensitive to break in as a flat tappet. The greatest challenge facing enthusiasts with hydraulic-roller cams is lifter weight.
How do you prevent GM lifter failure?
Without oil, the components wear out due to constant friction and heat and are prone to fail. This is why maintenance like oil changes should be done on time and oil levels should be checked regularly. If you think you are having a lifter issue, we recommend you take it to a professional immediately to be looked over.
When did rollers come out?
1930
Curlers, a tale as old as time
Variations on these were used throughout the ages until in 1930 American Solomon Harper invented the first rollers that didn't need heating. Not long after that plastic rollers arrived on the scene with Hollywood starlets, including Marilyn Munroe, popularising stylish curled hairdos.