I have a 348" small block built for NHRA SS/BS. It has 15:1 compression and is restricted to a 750 CFM carb. I have been messing with this engine for a long time.

A well respected cam guy at Comp recommended a more modern cam for it, it was ground at 115 LSA and was to be installed at 113.

On the dyno the engine made a little more power than the old cam, both were over 700 peak HP. However the guys at the shop that dynoed it thought the lobe center was wide for that engine.

The guy I had been working with at Comp left and I was assigned another. The new guy kinda wondered about it also and reground my old cam at no charge. The regrind had a LSA of 110 and was installed at 109.

On the dyno with the reground cam the engine made about the same peak HP but made more power and torque at all RPM levels below peak.

Your mileage my vary...