Raw Casting ZL-1 Block

[bergy]

There is no water jacket core - if the core was there, it would have printed at the freeze plug. Aluminum blocks were milled (rotary cutter)

[MarcDant]

Do zl 1 cylinder heads interchange with L 88 heads if so how do the heads get coolant circulation from a zl 1 aluminum block to a L 88 cast iron block.Yes they use dry blocks for drag racing because the engine only runs for 2 or 3 minutes,no need for coolant.Thanks marc.