Engineered for Enthusiasts,
by Enthusiasts

Providing New GM Performance Powertrain Packages Customized to Fit Your Classic Car.

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Explore Our Products

Official GM Performance Power Train Distributor, Located in Downey, CA

Chevrolet Performance LS3 engine (Black series)

Price range: $12,608.00 through $13,965.00
Select options This product has multiple variants. The options may be chosen on the product page

Chevrolet Performance Black Series L8T/L8P 6.6L (low clearance intake)

Price range: $11,497.00 through $13,647.00
Select options This product has multiple variants. The options may be chosen on the product page

Chevrolet Performance Retro Series LS3 engine

Price range: $16,770.00 through $18,122.00
Select options This product has multiple variants. The options may be chosen on the product page

Testimonials

Engine Atomy
Jason Clark

Wish I found Engine Atomy first but can't say enough good things about them. I purchased my LS 525 black series from Gandrud GM Perf dealership (Also great) who used Engine Atomy to service my order. Engine Atomy knows LS swaps and provided feedback that the front accy drive selected would have clearance issues and installed a Holley unit. Most shops would ship what was ordered and not think twice. thank you!!! and Gandrud did not up charge even though the Holley unit was more $$$. Just a great experience all the way around. Don't hesitate to buy from these guys. (Taken from Google Reviews)

Engine Atomy
Jeff Avery

I had the pleasure of working with Engine Atomy to build me an engine and I am absolutely thrilled with the results. From start to finish, Andrew was a true professional in every sense of the word. His knowledge, attention to detail, and commitment to quality were second to none, and it was clear from the start that I was in good hands.
Throughout the process, Andrew kept me informed every step of the way, providing valuable insights and recommendations. He took the time to answer all of my questions and concerns.
When I received my newly built engine, it was clear that Engine Atomy had gone above and beyond to ensure that every detail was perfect.
Overall, I would highly recommend Engine Atomy to anyone in need of engine services. Andrew and his team are true professionals in every sense of the word and are dedicated to delivering top-notch results. If you want the best, you won't find a better partner than Engine Atomy! (Taken from Google Reviews)

Mike Silva

If you guys are here, stop looking around you’re at the right place. I’ve bought an LS motor for my 1962 Cadillac convertible That was two years ago this weekend I drove it 470 miles Without a problem every time I go somewhere people want to know who built this motor. Customer service is probably one of the best service I’ve got from them every time I called they answer the phone. Didn’t have to leave any message any text they told me on this day. The motor be ready. I took a little drive went picked it up and now I have a few friends that have them. (Taken from Google Reviews)

Mike Demicco

Andrew was great to deal with, he worked with me and his communication was excellent through the whole process. My crate engine came quickly and with zero issues, definitely a spot I recommend, especially when they can show you the motor starts and is healthy! A+ To do business with. (Taken from Google Reviews)