What does increasing cam duration do?
A 280-degree-duration cam holds the valves open longer than a 260-degree-duration cam. Holding the valves open longer allows more air and fuel into the engine and also allows more to get out through the exhaust. Longer duration (higher number) improves top-end power but almost always sacrifices low-end torque.
How does cam duration affect idle?
Again, keeping all else constant, more duration will make the engine less efficient at low rpm, with more overlap dilution of the induction charge, and the later intake valve closing reducing the trapping efficiency. Therefore, a long-duration cam will cause rough running at idle (lope) and a loss of low-rpm torque.
What is the best camshaft for a 350 Chevy 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 is the highest RPM a camshaft can go?
This ranges from 2,000, all the way to 5,800 RPMs to give you the largest range of top-notch performance. This camshaft doesn’t just come by itself, it also comes with a set of lifters, written instructions for easy installation, and an assembly lubricant.
Is the hot cam too small on a 383?
The HOT cam is a little small on a 383 due to the bore/stroke relationship and the difficulty with cylinder fill with the longer stroke. A little bigger cam and a little bit of valve job/cylinder head work wakes the combo up big time with power in the 470-500 range, and the torque curve is still flat.
Why buy a Chevy Silverado camshaft?
This model comes with a high RPM operating range and early intake valve opening that make your Chevy sound, and drive more powerfully on any type of road. With all the great features that this camshaft option has, it is clear to see why we chose this model as our top pick.