The Ramjet,if not familiar with it,has duration. 380 to 400 ft/lb) from 1800,or,so,up thru 4800 to 5000 rpm.Adding 1.6 rockers on the intake helps too with this cam in a stock Vortec.Even adding 1.6 rockers to the stock cam would,IMO,perform better than the LT1 cam for your vehicle & it's weight. Changing the cam timing will not change the LSA.The LSA is ground into the cam & it is what it is.With that heavy body,the stock cam would probably be a better choice than the LT1.A better option for you tho is the Ramjet cam(#14097395).This cam will give you tons more of lower rpm torque(approx.
