Reverse flow pumps flow into the heads and it comes out the block. Theory behind it is the heads need cooling more than the block. I just don't know how they push and pull from the radiator. Tim

1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!