I really need a 4340 steel crankshaft does anyone know if anyone has had one made? There are a couple of campany's that will make it for me for $2700-3300 but I didnt know if someone has had one made already. I know someone will reply back that the stock one is good up to 600hp which I already know, plus I dont think the stock one will hold hp and the 8500+ rpm's that im planning on. This is the only thing that Ihave left for the engine.

 

Nah, no one makes one for the reasons you stated. The stock one handles the power of what 99.99999% percent of modified Tiburons in the world make. As our Korean members have stated, 1000+ hp Tibs in Korea still use the stock one.

 

It will hold the power and rpms you want. I'd also like to see you get that 600+whp to the ground.