I have 426 Chryslers (fresh water system - no heat exchangers) and was wondering if I should use some muriatic acid to clean the system or not..

I do not think the engines ever had the cooling system de-rusted, so I am thinking this would take and crud out of the engine and the risers...

I can dilute the acid (1 part acid to 2 parts water) to make it a 33% solution, and feed it through the water pump, wait a minute and flush the system throughly.

Not as thorough as taking all the pieces apart and soaking them in buckets of acid, but it is much more practical and safer...

Would that work or is there a better way to do this?