Quote Originally Posted by Iron Indian View Post
Sure parts are going to wear, but in such a short time? And keep in mind, sure he has Nitrous, but he is by no means heavily modded. No heads, cam, high compressioin, different power adder (Turbo) etc. He could put ALOT more through it than he has on it now. Theres alot more that could be made. His car does run good I will. I've meet him and seen his car in person before.

IMO, even with a 150 shot and his mod list on slicks, the input shaft should last for a bit anyway. Hell I knew of a guy in San Antonio (Met him at ACS 3 in 2005) running similiar mods, with 150 shot IIRC he was high stalled running slicks and 12.30s and he had Intense hard parts for several years.
Metal doesn't care how much power you put out. I would bet some serious cash that a 4340 input shaft could handle 600 hp. If the power is gradually added its fine, if the power/torque hits HARD, parts snap. It doesn't care about hp, it cares about shock load. This is a very important concept in structural aeronautical design.