No T-stat. With an electric pump flow is constant regardless of engine speed. My data logs show zero temp rise in the water during a run. There simply is not enough time for the temp to rise. On the return road back to the pits the temp will start to creep up and pretty much stabilizes by the time I am back to my pit. Your results may very depending on what the water temp is before you make your run. I try to have the water temp at 160* when staging the car. I run E-85 and it takes longer to build heat in the engine compared to C-16. I rarely see temps over 185* on a hot day.
1989 Saleen 414 358cid SBF 2.8L Kenne Bell S/C
26 X 8.5 Hoosier
Best 1/4 mile time 8.623 @ 159.82 mph with a 1.34 60' (5.57 1/8th at 128)
Best 1/8 mile time 5.339 @ 133.46 mph with a 1.29 60'
08' Bullitt #4097 N/A 340ish RWHP <<<<<FOR SALE!