No, you don't "NEED" to change the cam, but it depends on what you're trying to do.
You can pick up some torque by changing the cam but you need to be careful. If you go too far the engine will start to idle rough and you'll loose fuel economy.
An RV cam will give you a little extra low end torque and at the same time can slightly improve the fuel economy. That might be helpful now that you have the 4-barrel.
A four barrel carb usually adds about 20 hp.
very carefully
Camshaft position is taken from the distributor, there is no separate sensor.
Where is the camshaft sensor located in 1997 Chevy venture
install hp cylinderheads and change out the camshaft
There is not a camshaft sensor on the '93 3.1 Lumina, just a crank sensor on the back side of the engine between the block and the barrel of the transaxle. Easy enough to get to from underneath the car.
no
No, there is no camshaft sensor on that model.
Yes, there would be subtle differences, but they are interchangeable.
On a 2004 Chevy Astro, the camshaft sensor is located in the front of the engine. It is on the left side of the timing cover behind the camshaft sensor.
Camshaft sensors were not used on any of the Chevy Celebrity 2.5L, 2.8L or 3.1L engines
where is the camshaft sensor on a 2000 Chevy sliversdo with a 4.8L V8 motor