I run a 22 in my 65 and my kid has the same in his 62.My 440 has 12.5 pistons stainless flex fan shriud under drive pulleys.Mine runs at 180 all day even when its 90s out.My rad is OE 65 never been touched.My kids was recored to 4 core for his 413 with under drive pulleys and no shroud.Still runs 180 and he puts probally 5 K a year on his.Mine gets about 2K a year.Rocky