The Chevy 350 has a hydraulic camshaft and hydraulic lifters. The intake and exhaust valves have a duration of 218 seconds a 0.5 rpm each. Both have a valve lift of 0.457 inches and a total duration of 268 seconds.
What is considered an RV cam?
An RV cam is a mild performance cam that is designed more to make lower RPM torque than high RPM horsepower. This is the type of cam that would be used in an RV if you wanted to upgrade the motor. No, it’s just designed for RV’S and heavy duty towing so they call it an RV cam.
What lift is a RV cam?
465-lift and 110-degree lobe separation angle . This is still considered a mild cam (sometimes called an RV cam), but in smaller engines (like a 305 or a 327) it will have a perceptible lope at idle.
Whats a good cam lift?
A street performance cam will usually have between . 450- and . 550-inch lift . More lift can increase power, and increased lift without changing duration increases power without affecting the point of peak power on the rpm band.
What does a higher lift cam do?
Designing a cam profile with more lift results in increased duration in the high-lift regions where cylinder heads flow the most air . Short duration cams with relatively high valve lift can provide excellent responsiveness, great torque, and good power. But high lift cams are less dependable.
How hard is it to put a cam in a 350?
Changing the camshaft on a small block Chevrolet 350 engine is a project that requires methodical disassembly, inspection and reassembly of many parts on the engine. Since the camshaft and lifters are internal components, several external parts will need to be removed first in order to complete this task.
How much horsepower does a Thumpr Cam add?
The Thumpr made the highest peak torque, the highest average torque, the highest overall average power, the best average numbers between 2,500 and 4,500 rpm, and the best numbers from 4,500 to 6,500 rpm. It made 396 hp at 5,900 and 418 lb-ft at 4,200 with the Vortec heads.
What is considered a mild cam?
In general, a stock replacement camshaft with duration of less than 200 degrees will have a lobe separation angle of more than 114 degrees. An RV or towing camshaft , which is considered a mild performance or an economy cam, will often have a narrower LSA, between 112 and 114 degrees.
What makes a cam thump?
cams lope because of events , they open valves because of events, they do it at certain times because they are events. The smaller the lsa the larger the chance for overlap.
What Is a Stage 2 camshaft?
Tuner Series Stage 2 Camshafts are designed to optimize horsepower and torque on engines featuring free-flowing intake and exhaust tracts , increased compression, and upgraded valvetrain. As a result, VTEC crossover is dramatic, allowing for that classic primary-to-secondary surge.
Does a cam increase horsepower?
Performance cams increase the duration and timing of the valve openings during the engine stroke, increasing horsepower and making your car accelerate more quickly. You’ll idle slightly rougher with a performance cam, but get a throaty rumble that’s desirable for some gearheads, depending on your vehicle.
What’s considered a big cam?
It is listed in degrees of crankshaft rotation. When someone refers to a “big cam,” they mean it has longer duration, not higher Lift . ... Duration at 0.050′′ is the degrees of crankshaft rotation between when the lifter is raised 0.050′′ and when it is 0.050′′ from its resting position.
How much HP does a Stage 2 cam add?
Most Stage 1 type modifications are typically in the +10-15% power increase over stock. Stage 2: this is typically referred to an engine with a performance cam upgrade as well as the other components within a Stage 1 combination. A typical Stage 2 has generally +20-25% more HP than stock.
Is a cam bad for your car?
An aftermarket cam will more than likely ‘not’ increase gas mileage . Depending on the cam, it will not hurt nor shorten the lifespan of you vehicle...... only the driver and his/her driving habits can do that. My suggestion: If you want great gas mileage, buy a toyota or honda.
How much does a cam install cost?
Around here the shops charge around $2500 for parts and labor for an LS3 cam install.
