b-cam vs. e-cam

[whiteyford0212]

i have a cam ?...why is the idle on the b-cam more lopey than the e-cam but the b has less lift..is it due to the lobe sep.?..anyways i was looking at getting thumper ported heads and am deciding which cam to use..it is purely a street car btw..any help would help, haha

 

[TrunkFunk]

Both the B and the E have a 110* lsa.
The B has slightly less lift yes, but it has an ante more duration.
The duration is a main factor in the cams characteristics.
The valve overlap is greater which tips the scale more towards stagnant airflow at idle speeds.
Hence the lope is more stumbling than the E.
It has slightly more aggressive valve timing events.

If this street car is going to have to pass emissions I would err on the side of caution and get the E cam.
I've also heard our computers conform to the E better.
I've never used the B, but I've had an E and I liked it in a 280rwhp combo.
Yes, it's not the best cam in the world ... but it sounds healthy, has good street manners, is cheap and passes the sniffer.
Not too bad for an "alphabet cam".

 

[SmockDoiley]

The B-cam is designed for NA motors, and the E-cam is for power adder motors. The difference is more duration and less lift in the B-cam which makes it lumpier at idle.

 

[RyanSG]

The B-cam is designed for NA motors, and the E-cam is for power adder motors. The difference is more duration and less lift in the B-cam which makes it lumpier at idle.

Yup pretty much it.