Reply to "Radiator coolant leak"

bosswrenchMember

Reason #2 for an 18-lb aluminum radiator is higher coolant flow rates through the 3X larger water tubed used in aluminum, To get even reasonable coolant flow rates thru a brass radiator, the tubes are paper-thin and the stock rad still weighed 46 lbs. That's significant wt off the front end even on a street car. GM started using aluminum rads in Corvettes & Z-28s in the mid-'70s, and now ALL mfgrs use aluminum- even in trucks.

2/3/153:39 PM

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