What does putting a bigger cam in do?
What does putting a bigger cam in do?
A bigger cam will open the intake valve wider, allowing more fuel and air into the cylinder. The larger the cam, the more fuel that is let in.
What should I look for in a Harley Davidson camshaft?
While there are no hard and fast rules for picking a cam for a specific application, some basic guidelines are worth considering. Keep in mind that performance camshafts are usually chosen for the basic purpose of producing more power from your engine. The three questions to answer before choosing a new cam for your Harley Davidson® motorcycle are:
What should the advance be on a LS big cam?
For medium cams, try within the range of 18-22 degrees of advance. Wild, lumpy cams may require 24-30 degrees depending on the compression ratio, cylinder head port sizes, etc. The optimum advance can only truly be found using a dyno, but another “cheater” method is to watch manifold vacuum levels.
Do you need longer cams for higher compression ratios?
For an engine with a cam properly matched to the displacement and compression ratio, the net result will be more power at middle and higher engine speeds. In general, higher compression ratios need longer duration cams Bolt in type cams are intended for stock compression ratios.
How big of a change does it take to change a cam?
Other factors such as the lobe separation angle, center line and exhaust lobes have some effect, but these are usually for custom cam installations. A change of approximately 5 duration @ 0.050″ is considered one (1) size or step.
How big is too big for a GM Cam?
Man its been a long time but I used to use the 3rd design off road GM cam with Hyd. lifters set at .010 worked very well in stick cars. I know this dates me big time. 292’s Like them too.
For an engine with a cam properly matched to the displacement and compression ratio, the net result will be more power at middle and higher engine speeds. In general, higher compression ratios need longer duration cams Bolt in type cams are intended for stock compression ratios.
How big is too big ( SBC Cam )?
If you run about 3000 rpm at 70 mph with 26 inch tall tires, then you’re probably in the 3.30 to 3.55 range. I’d kill to have a M-22 again. That Summit cam will work, but I’d like to see the lobe separation in more of 110 range. That’s why I like Comp’s cams for this and their hydraulic flat tappets are only a few dollars more.
While there are no hard and fast rules for picking a cam for a specific application, some basic guidelines are worth considering. Keep in mind that performance camshafts are usually chosen for the basic purpose of producing more power from your engine. The three questions to answer before choosing a new cam for your Harley Davidson® motorcycle are:
