Gromm Racing Heads

I will not recommend this shop. I took my ls1 engine to this shop to have it rebuild, I got my engine back 12 months later and $4500 in parts and labor when I got home, I noticed one of my rocker arms was loose. They reused the old lifters, knowing they were not good, The engine only lasted about 2000 miles before one of the lifters destroyed the camshaft

I’d give 0 stars if that was an option It pains me to speak negatively in this setting as we have never shed any light in belief it comes back around. However we have publicly supported this company, and sent many others in their direction therefore I feel it is my responsibility to caution others to be extremely careful when choosing who to trust with your business. We’ve had repeated issues with engines from Gromm Racing, with four consecutive failures occurring in less than five hours of runtime each. Despite thorough investigations, including sending oil samples for analysis (which returned clear results), we’ve been met with deflection and accusations. Gromm Racing claimed the oil analysis company was lying to protect their product’s reputation. Our data logs confirmed that the engi

Gromm racing completely rebuilt my engine from the ground up. They went above and beyond and reinforced my entire bed of my truck to withstand the new power it would be withstanding with a brand new engine. When I start her up the whole neighborhood can here it and that’s how I like it, definitely going to be coming back to Gromm whenever I need any engine works and I highly recommend them.

I called today because I bought a truck with a 383 Chevy he assembled and I wanted his recommendation on oil. Not only did he give me a recommendation but he took the time on the phone to explain why he recommended it. He was also genuinely interested in which customer he originally built it for and asked me to call him back. I can say the engine has 30k on it and it still sounds great and has a TON of power.

Even though he had nothing to do with rebuilding my engine, the new owner returned my call after I left a voice mail asking about the correct motor oil to use for breaking in my particular engine Very helpful and knowledgeable. Willing to spend a lot of time on the phone. Gromm Racing continues to be in excellent hands.