On my 4wd 13.5 car on a 155ft main straight.
About 2-3yrs ago I was running a pre-timing LRP with LRP 13.5 motor, motor timing almost fully advanced, I was gearing at 4.2:1, and yes motor was way hot.
Now I am running Tekin RS Pro 212 with LRP X12 13.5, and am now geared at 8.05:1. I am doing over 55mph and motor temp is mid 70's C.
Tekin say to run a lower ratio than expected.