Originally posted by Kurtis500
Windowed usually means its had a rod thrown through it, and then repaired. They are all aluminum, just like the block in the regular cars now days. They work fine. Some, like the KB stage 15, TFX and Rodeck/TFX 392 are forged aluminum too. Many of the heads are billet parts and not cast.
Does anyone make water heads? what about using an old fuel or alky crank in a blown gas dealio?