
Pro engine tips on assembling and tuning everything from street engines to full-race motors.

We upgrade our 5.3 LS with forged parts, cam, EFI then dyno NA and boosted on 93 octane.

The visit to UNOH includes building and dynoing a 434-cubic-inch UMP Modified dirt track engine.

Dyno testing a custom-built 5.3 LS crate engine; talking in-depth about the importance of quality fasteners.

Building a modern Chevy stroker starting with an LQ4 iron truck block that can survive turbo boost.