Three generations of fine engineering.
Family owned since 1976.
FROM 1976 TO NOW
GCH Long Block Racing began rebuilding hot rod engines in the 1970s. Now we’re on the cutting edge of Subaru’s ever-improving, ever-evolving performance technology.
We are a second and third generation machine shop with a combined total of 65 years of experience. We’re proud to offer top-quality engineering technology. Every job that comes through our shop is custom built to order.
Fully in-house, we have control over what leaves our shop. Each block and head is tested through our rigorous inspection from start to finish by our team of state-certified machinists. We measure our blocks inside and out to ensure the best tolerance levels and specs.
Browse our customer reviews and shop our products to get to know us yourself, and don’t hesitate to reach out with any questions!
BACKED UP BY 45 YEARS OF PIONEERING EXPERIENCE.
George is a 2nd-generation engine rebuilder. He started in 1976, learning everything from his father.
George has rebuilt an array of engines from domestics and imports to hot rods, muscle cars, and, of course, high performance Subarus.
The knowledge and experience George accumulated over the years allowed him to hear any noise an engine would make and diagnose the problem, even by just listening over the phone.
John has been working at GCH since he was 14 years old. He is the master machinist working hard behind the curtain with 2 state licenses. Thanks to John, GCH is able to perform all our client’s engines in-house. John is meticulous, precise, very knowledgeable and takes pride in what he does.
His favorite Subie is the 2014 STI wide body.
Gabriel has been working at GCH since 2002. He is responsible for advertising. If you call us, Gabriel is the friendly voice on the phone. He works hard to help clients achieve their dream car.
He helped evolve the business from an over-competitive market into the Subaru market, raising the company’s potential and turning it into the cutting-edge machine shop it is today.
His favorite Subie is the 2012 WRX wide body.
45 YEARS DOWN THE LINE
Since George started rebuilding engines in 1976, this shop has been his passion.
He started the original shop in Covina in 1984. George would go above and beyond to make his customers happy, and he has taken much pride in teaching his sons to follow in his footsteps.
We are proud to serve Southern California area, and we look forward to many years to come.