Cylinder head heat crossover?

[Ron Miller]

Originally Posted by Mike Taylor 3601

I have always used zinc...that's what Mondello sold....
I buy a ingot of zinc alloy from Mc Master Carr industrial supply it is about 12'' long 3'' wide and 2'' thick will do 2-3 sets of SBC.
Olds might get 2 sets out it..
next set I do I may melt down some old pistons since I accumulate about 6-8 55 gallon drums a year that I scrap...
I have blocked off a SBC intake.. I filled all the heat riser and EGR passages...
intake was cracked under carb so I filled it to prevent vacuum leaks to EGR passages and it has been through teardown....
I think filling head is better to keep heat out of heads

Mike, A machine shop that I did business with did just that. They were a low buck shop. They used a Colemen camp stove to heat a cast-iron skillet and melted down the old cast pistons. I know they did this in some Oldsmobile heads and maybe even some Cleveland heads. Also in early December, they sold 4 to 5 barrels full of old cast pistons to a scrapper. The money earned would pay to throw a Shop Christmas party. I miss the shop, lots of Good Times.