Now, 632 cubic-inches isn't happening with a factory GM block, so the builder grabbed a Dart aluminum block and went to town on it by adding a forged Bryant stroker crank, Carrillo rods, and a set of ...

WhereAre ZZ632 Crate Engines Built? The Performance and Racing Center isn't a place that's easy to get into. Why? Well, because this is where GM builds many of its all-out race engines like this LT6.R ...

We take a behind the scenes look at the building of a ZZ632 big-block crate engine and run it on GMs dyno.