102 is fine IMO, I wish I would of put mine at 102. Lots of guys like to install the MP 590 between 99* and 101* for best performance.

Installing your MP 509 at 102* isnt out of the Performance perimeter of that cam , by any means.

At 102 with your 10.1 comp your cranking psi may get close to Race gas octane needs for driving around the street under load. And with its less duration compared the 590 will lose some HP over 6000 rpm. But with your combo I dont think that will matter.



I say run it as is at 102* and let us know the difference in how it runs. With your 3000 stall vert it will be a good thing, IMO "Guarenteed"

I also understood that you werent using the crank offset keys.

And by the way document your cranking PSI @ 110* retarded vs 102* advanced. Ive seen a 20# psi. difference just by advancing 4*

Advancing a cam by 4* to 6* doesnt hurt the overall HP below 6000 RPM it just makes a Bigger cam seem smaller at lower RPM. mike