How do I identify a Pontiac camshaft?
Re: camshaft identification?? – 04/11/04 07:42 PM If it is a stock Pontiac cam, there should be a letter stamped on the front end of the cam shaft.
What do the numbers on my camshaft mean?
The first two numbers are the degrees of opening being 210 for the intake and 218 degrees for the exhaust given normally at .050 inch of lift. The next two numbers are the valve lift of intake and exhaust in thousands of an inch. The final number is the degrees of overlap.
Does a camshaft increase horsepower?
Does a camshaft increase horsepower? Yes, a camshaft adds 10 to 20 horsepower depending on the setup. To get the full potential of the high-performance camshaft, you’ll have to swap out additional components like the air intake, exhaust manifold, injectors, and valve heads.
Where are camshafts located?
What Is a Camshaft? Located in the “top end” of an engine, the camshaft is a critical part of the valve train that allows air and fuel to enter the combustion chamber (the space above a piston) and exhaust gases out after they burn.
How do you read a camshaft?
Reading a Cam Card: Lobe Separation Angle (LSA) This figure is derived by adding the intake center line plus the exhaust center line and dividing by two. In this case: 108 + 116 = 224 degrees / 2 = 112 degrees.
How many camshafts does a V8 have?
four
An i4 engine has two camshafts, while a V6 or V8 engine has four. Usually there are two intake valves and two exhaust valves in overhead- cam engines.
Do 2 stroke engines have camshafts?
Note: Camshafts are usually installed on four stroke engines and very large two stroke engines only. A camshaft is a long bar with egg-shaped eccentric lobes (cam lobes), one lobe for each valve and fuel injector (if engine does not have a common rail fuel injection system).
What happens if your cam is too big?
Camshaft is too large. Intake closing and exhaust opening points greatly affect low-end performance. If the engine sounds fine, it’s likely due to late exhaust opening. More exhaust duration on a wider LSA will open the exhaust earlier and help the engine carry power at high speed.
What makes a cam choppy?
LSA (lobe separation angle) determines the choppiness, it has to do with the overlap of when both valves are open, as in when the exhaust valve is closing and the intake valve is opening to pull fresh fuel in on the intake stroke after pushing out the burnt fuel. Most GM cams come on a 112, 114 or 116 LSA.
What are the different types of camshaft heads?
CAMSHAFT HEAD TYPES TYPE A TYPE B TYPE C TYPE D TYPE E TYPE F TYPE G TYPE H TYPE I TYPE J TYPE K 1.375″ 1.125″ 1.08″ .813″ .687″ 1.31″ .988″ 1.125″ 1.00″ 1.187″ 1.187″ A Camshaft Length C Number Of Splines Inside Diameter
What are some of the best torque ratings for a cam?
Brute low end torque, great for daily driving. Cruise RPM 1600-2200 Strong low & mid range torque, daily driving. Cruise RPM 2200-2700 Strong low & mid range torque, daily driving. Cruise RPM 2600-300. Most popular cam. 350-455. Works with stock parts. H-O Ent. Strong mid range torque, street & mild bracket. Cruise RPM 2700-3200
What is the most powerful cam on a stock valve train?
Biggest cam for stock valve train. H-O Ent. H-O Ent. H-O Ent. H-O Ent. H-O Ent. H-O Ent. H-O Ent. Brute low end torque, great for daily driving. Cruise RPM 1600-2200 Strong low & mid range torque, daily driving. Cruise RPM 2200-2700 Strong low & mid range torque, daily driving. Cruise RPM 2600-300. Most popular cam. 350-455.