Tango and others

I am concerned for the hot rodders and other level of enthusiests

The former adbundent supply of rebuildable performance engine cores has virtually dissappeared over night

With the supply of aftermarket blocks we can do engine builds without all the disposal of oil / anti freeze / cleaning solutions---however, there are some engines not available in the aftermarket ( Dart, World, etc )

We have been getting clean cores from some core suppliers and all of a sudden----some aren't available---told one big place we would take all the LTs they had---two passed mag partical inspection( and this after thermal cleaning $$$$$) Another even bigger place
had eight
We did get I think a total of 18 or 20 sbc 4 of 4 bolt main 2 pc seal, and others one piece seal roller blocks 2 bolt main that we will be putting splayed 4 bolt center caps on,

We ( car nuts, not just us as machinists) cannot afford to pay a dollar per cubic inch for dirty cores that will dump oil and antifreeze all over the shop , do the stripping / cleaning, then machining, blue printing when we can use say a Dart SHP or sportsman block that already is clean, bigger and most of the work is done ( needs finish cylinder hone for pistons)