Short blocks, Long blocks and Turnkey LSx engine packages. All engines are hand built by one builder and fully blueprinted.

All engines come with a 12 months limited warranty. Tuning, install or user errors are not covered by our warranty.

Comes with full instructions for break-in and build sheet with full spec &  clearances.

LSx Engines

  • LSx Long Blocks

    LSx Long Blocks (4)

    ACE Performance is the only company to offer COMPLETE long blocks, our engines aren't shipped naked without valve covers or oil pans, they are complete and ready to drop into your vehicle! We also offer an optional dyno tuning service on all long blocks or turnkey engine builds. All long block engines come with a 12 months limited warranty. Tuning, install or user errors are not covered by our warranty.
  • LSx Short Blocks

    LSx Short Blocks (1)

    Custom, hand built & blueprinted LS short blocks Short blocks from 600hp up to 2000+hp All short block engines come with a 12 months limited warranty. Tuning, install or user errors are not covered by our warranty.
  • LSx Turnkey Packages

    LSx Turnkey Packages (1)

    Daily Driver Turnkey LSx Packages Custom, hand built & blueprinted LSx crate engines Turnkey engines for daily drivers to race cars from 600-2500+hp. All ACE crate engines come with a 12 months limited warranty. Tuning, install or user errors are not covered by our warranty.