^^^The L31s like alot of timing, especially with larger cams. I could not open the tune posted here because I use HPT. Stock LT1 F--car cam in my brothers Suburban really liked the timing when I threw this map at it.
My 215/220 @ .050 on 114° LSA can with Aluminum Etec 170 heads LOVES timing advance. I bet the timing could cone in even quicker with a Thumpr cams tight LSA.
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