If you did install the cam retarted it will make the
engine lazy on the low end... I usually install my
cams advanced from 4* to 6*... on my 416 in my street
rod I installed it straight up at 105(its a 105 LSA
cam).. I didnt want to make any more torque to raise
the conv stall any higher.. its 5000 with 500 ft lbs
of torque and I made 535 torque