Intake Center Line

Greg Reimer 7376 · 06-25-2011, 11:00 PM

Advancing the cam decreases the intake piston to valve clearance and increases the exhaust piston to valve clearance.Retarding the cam that much increases the intake piston to valve clearance,and decreases the exhaust valve piston to valve clearance. Also, advancing the cam increases torque and reduces peak horsepower.Retarding the cam decreases torque and increases peak horsepower.Wouldn't it be great to be able to use a variable cam timing device that allows you to leave the line in at 98,and cross the finish line in at 108?Also, the weight of your car can affect where the engine wants the cam. My K/SA 68 Chevelle hardtop might just want it somewhere else than my O/SA 68 Chevelle wagon.Those two cars weigh 490 pounds different.

06-25-2011, 11:00 PM	#8
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,136 Likes: 172 Liked 705 Times in 219 Posts	Re: Intake Center Line Advancing the cam decreases the intake piston to valve clearance and increases the exhaust piston to valve clearance.Retarding the cam that much increases the intake piston to valve clearance,and decreases the exhaust valve piston to valve clearance. Also, advancing the cam increases torque and reduces peak horsepower.Retarding the cam decreases torque and increases peak horsepower.Wouldn't it be great to be able to use a variable cam timing device that allows you to leave the line in at 98,and cross the finish line in at 108?Also, the weight of your car can affect where the engine wants the cam. My K/SA 68 Chevelle hardtop might just want it somewhere else than my O/SA 68 Chevelle wagon.Those two cars weigh 490 pounds different.