By Bernie Vasquez on April 2, 2026 Verified by Google

Built a snotty little 5.3 for my 71 nova. They take the time to do it right. Answered all my questions and kept me up to date on everything. If you’re looking for a shop to just resurface your heads after a blown head gasket to a total custom build CSM is your one stop shop!

By Michael Fitzgerald on September 6, 2025 Verified by Google

Lance went absolutely above and beyond to help me get an odd project done. Flawless execution and excellent customer service. Highly recommend

By Steve O on August 15, 2025 Verified by Google

Most knowledgeable high performance shop around! They'll build you whatever want, sky is the limit, they'll scare you with the power horsepower their motors make! True professionals in the industry! Cal Street will take care of you, every build! They treated me like family! You won't find better people!

By Saul Sandoval on June 9, 2025 Verified by Google

The guys are one of the most unprofessional machine shop in our area. I’ve seen guys do better work in hobby shops. The original owners were good, that new guy couldn’t assemble a Lego set.

By Noel Eusebio on December 15, 2023 Verified by Google

Took my Toyota 4Runner cylinder head to be machined. Inspection was $230 and CSM stated it would cost me $1,100 to machine it on top of the $230 I already owned them. For that price I could purchase a new one for $700 though it would be an after market replacement. Decided to go to Dan's engine shop in Concord on a recommendation and the machined the head for $550. Got me back on the road for less than half the price and got it done in 3 days.

By Andy del Valle on March 18, 2021 Verified by Google

Brought my cylinder head in to get resurfaced and cleaned up. Also got my cams and rocker arms polished and cleaned. They did a great job I highly recommend.