250 Head and Cylinder Fin Alloy

Started by skipperclyde, April 03, 2002, 05:07:13 PM

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skipperclyde

Can anyone tell me what alloy the head and cooling fins on a 74 250 are made of.  

I have been told both Magnesium and Aluminum.

Also, what fill rod to use when TIG welding both.

Thanks

Phil