How Much Lift Does 1.6 Rockers Add

Lift is the amount of air that is pushed into an engine’s cylinders during each cycle. The size of the lift depends on the camshaft profile and its design. Rockers are a part of this system, as they act as a multiplying force to increase valve lift.

1.6 rockers will typically add about 0.4-0.5 inches in additional valve lift over stock lifters, depending on how aggressive the cam profile is designed to be from the factory or custom built for your application. This translates to more air being able to enter through valves when they open, creating greater power potential at higher RPMs than with stock parts alone due to increased torque output and cylinder pressures created by larger amounts of air entering each combustion chamber during every cycle..

Adding 1.6 rockers to your engine can provide an additional lift that translates into more power and torque. The amount of extra lift depends on the design of the rocker, but it usually ranges from 0.4 inches to 0.8 inches, which can have a noticeable effect on performance when combined with other modifications like bigger valves or higher-flow heads.

This increased lift will help increase airflow through the intake and exhaust systems for improved combustion efficiency, leading to better power delivery throughout the RPM range.

How Much Lift Does 1.6 Rockers Add


How Do You Calculate Lift With 1.6 Rockers?

Calculating lift with 1.6 rockers is an important part of any engine build and requires a bit of math to get it right. The first step is to measure the intake and exhaust valve stem heights, as well as the pushrod length for each cylinder in your engine.

Once you have those measurements, you can use them to determine what camshaft lobe lift will be required for a given rocker ratio (in this case, 1.6).

To calculate the lobe lift, divide the maximum valve stem height by the rocker ratio; for example, if your intake valve stem height is 0.200” and your rocker ratio is 1.6:0.200 ÷ 1.6 = 0.125” lobe lift at TDC (top dead center).

This calculation also applies when using roller tip or needle bearing style rockers which are becoming increasingly popular due to their ability to reduce friction on high-rpm engines and improve efficiency overall during operation – just make sure that they are properly adjusted before installation!

Finally, once you know your desired lobe lift at TDC then you can select a camshaft with appropriate specifications so that it delivers the desired performance characteristics from your engine build project!

Do 1.6 Rockers Make a Difference?

1.6 rockers are an important component when it comes to engine performance, as they are responsible for controlling the lift and duration of the intake and exhaust valves inside your engine. This is critical since these two parameters determine how much air and fuel can be taken into the combustion chamber, which ultimately affects the power output of your vehicle’s motor.

With a larger rocker arm ratio, you will achieve more aggressive cam timing which in turn leads to increased performance due to improved cylinder filling with faster valve opening rates.

The larger 1.6 rockers also offer reduced friction from their higher-grade materials used during construction compared to standard models leading to even further improvements in peak horsepower figures.

However despite these advantages, some people may still question whether or not installing 1.6 rockers actually makes a difference? To answer this simply; yes!

Not only do they improve top end power but they also help provide smoother acceleration throughout all RPM ranges while improving overall drivability at any given throttle position – making them great additions for both street cars and race vehicles alike!

What is the Benefit of a 1.6 Ratio Rocker?

The benefit of a 1.6 ratio rocker is the ability to increase valve lift and duration, meaning higher engine performance potential. This is especially helpful when building an engine that needs more power than its stock configuration can provide. The increased lift and duration provided by the 1.6 ratio rockers allow for larger valves and higher spring rates which can improve airflow into the cylinder head, resulting in improved volumetric efficiency as well as increased overall horsepower output from the engine.

Additionally, since these rockers have a much lower profile than traditional rockers, they are less likely to contact other parts of your vehicle’s underhood components while still providing increased valve lift and duration at high rpm levels. Finally, this type of rocker arm design also allows for easier camshaft changes should you ever decide to upgrade or modify your vehicle’s powertrain setup later on down the road.

How Do You Calculate Lift With Rocker Ratio?

To calculate lift with rocker ratio, you first need to know the camshaft lobe’s base circle diameter and centerline. The lift at TDC (top dead center) is equal to one-half of the difference between the valve opening at full lift (or maximum intake or exhaust duration) and the closing duration, multiplied by the rocker ratio.

To find this value, measure from the camshaft lobe’s base circle to its peak point.

Subtract 1/2 of that measurement from 0 degrees plus half max lift (this will be your opening duration). Do a similar calculation for your closing duration, subtracting 1/2 of that measurement from 0 degrees plus half max lift. Then take those two measurements and divide them into one another.

That is your rocker ratio.

Finally, multiply it by your valve’s maximum lift in order to get an accurate result of how much total valve lift you have achieved with that particular rocker arm setup!

How to Measure Rocker Arm Ratio

Rocker arm ratio is an important measurement in internal combustion engines, as it affects the speed and power of the engine.

To measure rocker arm ratio,

  • first you must remove the valve cover to access the rockers arms.
  • Then use a ruler or caliper to measure both ends of each rocker arm and calculate the length difference between them.
  • Finally, divide the longer end by the shorter end to get your rocker arm ratio.

With this information you can determine if any adjustments are needed in order to optimize performance on your engine.

What are the differences between rocker arms with different ratios?

1.5 to 1.6 Rocker Calculator

The 1.5 to 1.6 rocker calculator helps you determine the optimal valve lift for your engine’s camshaft, based on the ratio of the intake and exhaust valves in terms of their open duration per degree of rotation. This tool takes into account factors like rpm range, cylinder head flow rate, as well as other aspects related to air/fuel delivery across a wide range of applications and can help you get more power out of your engine with less stress on components.

480 Lift Cam With 1.6 Rockers

The 480 lift cam with 1.6 rockers is an excellent choice for those looking to upgrade their engine power and performance. This combination of camshaft and rocker arm provides increased valve lift, which translates into improved air flow and an increase in horsepower. The added torque from this combination also improves the car’s acceleration, making it a popular choice among many automotive enthusiasts.

1.6 Rockers on Stock 350

The 350 Chevy engine is often used in stock form for off-the-shelf performance. A 1.6 rocker ratio on this engine will increase the valve lift, allowing more air and fuel to enter the cylinders, resulting in improved power and torque output. It also reduces overall wear on the valves and valvetrain components by reducing contact between them during operation.

The increased lift can help with high rpm applications such as racing or performance driving, so if you’re looking for an easy way to add some extra horsepower without a full rebuild of your engine, consider upgrading to a set of 1.6 rockers for your 350 Chevy.


This blog post has explored the potential power gains of 1.6 rocker arms, and it’s clear that they can provide a significant amount of lift to an engine. While there are some drawbacks to using them, such as increased wear on components or the need for custom parts, their ability to increase airflow through an engine is undeniable. As long as you’re mindful of their limitations, installing 1.6 rockers can be a great way to improve your vehicle’s performance without spending a lot of money.

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