Radiator size based on hpnever made that much sense to me, for the reason you point out.....how long are you running at WOT ?

I run a 22 in a 70 Cuda, 440, 4 speed, no AC. Gets to 210 on a warm-hot day in traffic. If I ever had a problem iam sure a new 22” rad would solve it.

As long as your system is working properly you will be fine.

Last edited by Pacnorthcuda; 05/21/20 11:13 PM.