The only mod I'd do to a t-stat is to drill a 1/8" bleeder hole in it to allow air to burp out when filling the system (note, some new t-stats come pre-drilled or have a notch in the sealing surface to take care of this).
Mike B
X2
BC 1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc 1949 GMC 250 project in waiting 1960 C60 pasture art Retired GM dealer tech. 1980 - 2022
