Cam Lope
#1
Pro
Thread Starter
Member Since: Sep 2002
Location: Dickinson (Houston) Texas
Posts: 653
Likes: 0
Received 0 Likes
on
0 Posts
Cam Lope
I was just wondering; What causes the engine to lope?
I always thought it was the duration of the cam.
Is more the lift, duration, or a combination of both that causes the sweet sound of engine lope?
www.bigdogvettes.com
I always thought it was the duration of the cam.
Is more the lift, duration, or a combination of both that causes the sweet sound of engine lope?
www.bigdogvettes.com
#2
Team Owner
Re: Cam Lope (matchframe)
It's the duration and thus the overlap that makes it lopey. Basically, the longer the duration, the more the valves are open past BDC (intake) and TDC (exhaust). This makes the cam/engine more efficient at higher rpms, but idle quality is sacrificed.
#3
Instructor
Member Since: Jan 2004
Location: Marshalltown Iowa
Posts: 246
Likes: 0
Received 0 Likes
on
0 Posts
Re: Cam Lope (matchframe)
The centerline of the cam also plays into this as it will affect the overlap. As you can see here http://www.compcams.com/Base/Images/...ration-002.gif Long duration and narrow separation gives you that nice rumpity-rump.