Not all LS's have the p8r head like the b20, a lot have the p75 head. Also, there is a minimal difference in the duration of the cams, but nothing really to speak of.There's no difference in cams; they use the same head, the B20 is just bored to 84mm and (depending on the motor) has different compression ratios.
Not all LS's have the p8r head like the b20, a lot have the p75 head. Also, there is a minimal difference in the duration of the cams, but nothing really to speak of.