What Do Cam Numbers Mean?

What makes a cam lopey?

Lope is cause by the intake charge being pushed back up the intake tract as a result of late intake valve closing.

This charge backs up through the venturi and upsets the signal that the carb is using to meter fuel with the incoming air..

Does a cam change compression ratio?

A camshaft will affect cylinder pressure not compression ratio. Static compression ratio is based on fixed mechanical features of the engine: Cylinder Bore diameter, compression height of piston, combustion chamber size, head gasket thickness, etc..

What is the best camshaft brand?

According to our BrandZoom Camshafts report, based on surveys of automotive enthusiasts who have shopped for or purchased a cam, the top 3 brands that are most trusted are COMP Cams, Crower and Edelbrock (in alphabetical order). Each of these three had a 90% or higher positive perception.

What is a good camshaft duration?

Cams with durations in the 195 to 210 degree range (measured at . 050˝ cam lift) are usually considered best for stock unmodified engines and those with computerized engine controls. … A cam with a duration of 240 degrees of higher will typically produce the most power from 3,500 to 7,000 rpm.

What is cam angle?

A Cam Angle Sensor is used to determine each cylinder providing a signal to determine the cylinder. This signal becomes a base signal in an electronic fuel injection system for fuel injection control and ignition timing control. … It converts the flux change to a rectangular pulse signal.

How do you read camshafts?

To understand what a camshaft is, you need to know all of the terminology.Base Circle: The lowest point in the lobe when the valve is fully closed.Ramp: The part of the lobe where the valve is beginning to open or beginning to close. … Nose: The highest point on the lobe when the valve is fully open.More items…•

What makes a cam have a rough idle?

The reason race cars have that rough idle is because the engines used are designed for high-rpm operation. … The reason you want to stay away from an increase in lobe lift is because of the changes youll need to make to a stock engine if the cam has more than approximately . 460 inch lift.

What is a Stage 1 Cam?

The LS1 Stage 1 camshaft was designed for enthusiast who want to increase power while maintaining excellent drivability and manners. … This Cam Motion hydraulic roller cam delivers smooth idle, excellent low end torque, and extended RPM capabilities over the stock camshaft.

How much horsepower does a Thumpr Cam add?

Cam A was good for 437 hp at 6,000 rpm, and 409 lb-ft of torque at 4,900 rpm. As expected, Cam B improved upon those figures dramatically, kicking out 464 hp at 6,200 rpm and 426 lb-ft of torque at 5,100 rpm.

What cam should I put in my 350?

COMP Cams CL12-600-4 Camshaft For 350 Chevy – Best Top Pick Review. COMP Cams CL12-600-4 camshaft option is our top pick, and for good cause. With its many great features that will increase the performance of your 350 Chevy significantly, this choice will give you the most horsepower for the most cost-effective price.

What cam specs mean?

The definition is simply the distance in degrees, as measured on the cam, between the point of peak lift on the intake lobe and the peak lift on the exhaust lobe. … Some given measurements, such as lift and duration, are easy enough for even the neophyte camshaft connoisseur to understand.

What is the biggest cam for stock 350?

What is the biggest cam for stock 350? The biggest cam will be the COMP Cams CL12-600-4 Thumpr 227/241 Hydraulic Flat Cam. This can also be regarded as the best cam for stock 350 chevy.

How much lift does 1.6 Rockers add?

With a 1.6:1 rocker, this gives us 0.508-inch valve lift at max lift, an increase of 0.031 inch.

What is the advantage of a roller cam?

Roller cams also allow for steeper lobes. In other words, they allow for more “area under the curve.” This means the valve opens faster and remains at a higher lift for a longer period of time. This allows for more airflow and more power. When changing cams, roller lifters can be re-used.

How do I know how long my cam is?

How is it measured?Using a Dial Indicator and Degree Wheel, find the opening and closing points of the valves at 0.050 in. of lift. If the intake valve opens AFTER TDC, use a negative value. If the exhaust valve closes BEFORE TDC, use a negative value.Add the numbers together.Add 180° to find duration.

What is considered a mild cam?

A mild cam is usually a little bigger than the stock cam. Most of the “Mild” cams have just a bit of lope to them and will give you a bit more power than the stocker. My car, unfortunately, has a mild cam in it with it’s TR224. Still makes more power than stock but idles and rides real close to stock.

What is Cam rpm range?

Definition & Description. The basic operating rpm range for a camshaft is its “sweet spot.” This range is where the engine will produce the most Torque and Horsepower.

Does a camshaft increase horsepower?

Method 2 of 2: Maxing Engine Performance. Consider installing a performance camshaft. Performance cams increase the duration and timing of the valve openings during the engine stroke, increasing horsepower and making your car accelerate more quickly.

What does putting a bigger cam do?

a bigger cam that stock, to a certain degree, will make more horsepower. a cam that is too big for the flow numbers of stock heads, will make the engine want to operate in an RPM range that the stock heads will choke out the benefits of… meaning no there wouldnt be a hp benefit.

Can you cam a stock engine?

Registered. You can’t swap just the cam and nothing else. Not counting the fact that sticking in a big cam in a stock engine and it running worse due to a mismatch with cylinder head and intake airflow, at the very least you MUST swap the springs.