Building a performance machine is all about making more power and thenuncovering the weak areas that inevitably show up as a result of theupgrades--and usually at the worst possible moment. We've been ...

Today's racer/restorer can now order a complete, fully assembled 12-bolt "crate axle" from Moser Engineering that's all-new and superior in every way to OE GM axle assemblies. Moser sells 'em with ...

It was 1973, the last time we saw a brand-new 12-bolt rearend in a passenger car, and man, the things are fetching untouchable green at today's swap meets. Some have argued that GM's 12-bolt axle has ...

Let's face it, performance cars are all about discovering the weak link in the chain. As soon as you start making serious horsepower, what happens? You break a transmission or a rearend because it's ...