I need a math genius to double check my math but I figure I need to retard the cam timing about 20 degrees to keep cylinder pressure similar to the motor I ran in that 1500 ram. This would also allow the exhaust another 20 degree push on the crank. This is the cam specs I found for the 92 cam, (I am gonna assume the 98 cam was close enough to the same it wouldn't really matter).

Intake valve diameter 1.925 inches
Cam design type: mild hydraulic roller
Intake valve timing:
......Lobe centerline 115.5
......Advertised duration 251 degrees
......Opens btdc 10 degrees
......Closes abdc 61
.....maximum lobe lift 0.27 inches
.....rocker arm ratio 1.6
.....gross intake valve lift 0.432
Exhaust Valve diameter 1.625 inches
.....Lobe centerline 109.5
.....Advertised duration 261
.....Opens bbdc 60 degrees
.....closes atdc 21
.....maximum ex lobe lift 0.27
.....rocker arm ratio 1.6
.....gross exhaust valve lift 0.432


Going from 10.2 compression to 12.2 compression and retarding the cam timing 20* gives me a bump from 8.3 dynamic to 8.5 dynamic if I am right.