Josh did a phenomenal job repairing my Sierra motor after the DFM system completely ruined the camshaft and lifters. Very reasonably priced and works perfectly. If you’re looking for an honest mechanic, take it to LSX.
November 2025
Put a tune on my Suburban that totally changed how it responds - for the better! Josh and the staff really listen and actually think! They are extremely knowledgeable and had a number of helpful pieces of advice for my setup. They all are helpful, encouraging and easy to talk to. Just great guys. If you have an LS If no one else can help, and If you can find them, Maybe you can hire...Spartan LSX Performance.
You'll thank me.
September 2025
Joshua and his team at Spartan LSX did a phenomenal job on my 2007 CTS-V. When they took it in it was a bit of a basket case in terms of questionable tune, and other issues from work at prior shops. It had low oil pressure as a primary concern, but I also wanted some performance upgrades. Ultimately it needed a bottom end rebuild to fix the low oil pressure. His partner machine shop did a great job on that as well. Josh added a high volume oil pump, a more aggressive cam, as well as some top end goodies. He also addressed some clearance issues with the steering column to my headers and some electrical work needed due to sloppy work from a prior shop that installed... read full review
Josh did a phenomenal job repairing my Sierra motor after the DFM system completely ruined the camshaft and lifters. Very reasonably priced and works perfectly. If you’re looking for an honest mechanic, take it to LSX.
Put a tune on my Suburban that totally changed how it responds - for the better! Josh and the staff really listen and actually think! They are extremely knowledgeable and had a number of helpful pieces of advice for my setup. They all are helpful, encouraging and easy to talk to. Just great guys.
If you have an LS
If no one else can help, and
If you can find them,
Maybe you can hire...Spartan LSX Performance.
You'll thank me.
Joshua and his team at Spartan LSX did a phenomenal job on my 2007 CTS-V. When they took it in it was a bit of a basket case in terms of questionable tune, and other issues from work at prior shops. It had low oil pressure as a primary concern, but I also wanted some performance upgrades. Ultimately it needed a bottom end rebuild to fix the low oil pressure. His partner machine shop did a great job on that as well. Josh added a high volume oil pump, a more aggressive cam, as well as some top end goodies. He also addressed some clearance issues with the steering column to my headers and some electrical work needed due to sloppy work from a prior shop that installed... read full review