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Originally Posted by jaydee116
Aluminum is cheaper but is it cheaper to manufacture a all AL heater core? AL seems harder to bond (even AL to AL) than copper to copper or brass to copper. Wonder how they bond the fins to the tubes in all AL heater cores. Interesting about the dimples and dividers.
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Don't know if it is cheaper to make, but it is cheaper to buy. Recent model heater cores for GMC K series pickup trucks look attractive (8.25x7.9x1 @ $30) and have impressive price performance. But they are Alu.
Aaron Spink