[Z06vette]

I can def understand not wanting to tear into a new motor. Buying the 430 and swapping the cam & springs is the best bang for the buck. And the power difference is significant. In most situations you'll have to change the oil pan anyway. Its a much easier and cleaner job to change the cam & springs while the motor is out... Really only need to pull the balancer, timing cover, cam sprocket, rockers & valve springs. If you'd have to pay someone to do this, the crate 525 is best choice. There is the issue with tuning, however. The crate motors come ready to go if you buy the ecm & harness. Everyone's situation is going to be different. I was just about to buy a 430 crate, and I decided to look around for some low mileage pullouts from reputable places. I found one complete with harness, computer, accessories, all sensors, etc. I sold everything I didnt use, sent the heads to texas speed to be cnc'd, and bought one of their cam kits. It worked out well, and I enjoy doing the work. I have a good local tuner which also helps. Scott