how do these two cams compare?

[jerry S]

Given the difference in lift between Cam A and Cam B, how does an engine behave with the extra lift from Cam B? These are both hydraulic rollers

Cam A:
Dur @ .050
Int 236 / Exh 240

Lift
Int 560 / Exh 540

Cam B:
Dur @ .050
Int 236 / Exh 240

Lift
Int 555 / Exh 576

 

[rbohm]

these cams will be similar in performance depending on the lobe centers. cam A will work best with aftermarket heads like the twisted wedge "R" heads. cam B of the other hand will work better with stock or modified stock heads, though will have similar gains using aftermarket heads. this assumes otherwise identical mods to the engines.

 

[ratio411]

Those are too close to call IMO.
No noticeable difference in sound or power.

Now, that is without knowing the event timing, lobe center, lobe separation.
That can be a world of difference between those two cams!
Do you know those specs? Or at least LSA and ICL? Those two numbers tell the whole event timing story...

 

[68RCodeConv]

LSA is a big deal. Affects the power curve and the idle characteristics.

Assuming the same LSA - not enough difference to tell.