ZZP makes a 4340 input shaft, they claim 600hp, but I've heard a few bad things about it breaking with less then that. They also make a 300m which is good to 1000hp. I have not heard of any of the 300m shafts breaking. The input shaft is one of the most likely parts to break. There is also a hardened output shaft, but I have yet to hear of any breaking. It'* likely you had a bad input shaft. He has been putting down a lot of HP with his setup. Not sure on his HP, but he was running with a 2.8" pulley and intercooled, and I had him tuned for 22* of timing at WOT with no KR. He lost a rod bearing so decided to build a new turbo setup.
SAVING THE WORLD ONE BONNEVILLE AT A TIME
1997,1998,2000,2005 year confused Bonneville SSExi. Stock? ish.
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