First problem is the TQ as that cam needs a 3000 to 3500. 3.55 to 3.91 gear change will give a little but not much. I'll bet your cam could use degreeing and a little advance from suggested intake centerline install. If it is the 108 lobe separation and a 106 intake install it would really respond to 103 or 102 intake install. often when a 484 108 lobe center is lazy the cam is in at a slightly retarded position.
