H & H Automotive Machine
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Since 1995, H-N-H Automotive Machine Shop, located in Haltom City, Texas, has offered full service machining. H-N-H leads the way in building superior engines as well as perparing customers for several applications and racing needs.

Surface Milling // Pressure Testing Heads // Valve Jobs // Magnaflux Testing // Rotors and Drums Turned // Guild and Seat Work // Block Preperation // Cylinder Bore Honing and Block Sleeving // Polish and Grinding of Crankshafts // Short and Long Block // Custom Engine Building // and much more!
Services
HNH Machine Shop started as a family dream building engines on the weekends and has grown into a successful business proudly serving DFW. HNH is proud to employee technicians that are trained to perform a wide variety of machining capabilities flawlessly for our customers, as well as building engines from scratch or for renovations.
Reviews (9)
Samuel Ramirez
Samuel Ramirez
Jan 19, 2022
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If I could give 10 stars I would. Huge thank you to Johnny and H&H. Had a 331 DSS stroker kit with a main girdle short block built by them. Rotating assembly was balanced and put together. Johnny was honest and upfront about pricing. Reason I went with them was initially, I asked if they could get the stroker kit, Johnny said that I could probably get it cheaper than them. I knew right away this was my place. I took them all my parts with my 99 Explorer 5.0 block and they did all machine work. Rod bearings I supplied were a bit tight and so Johnny called to let me know. He wanted to make sure clearances
Jason Brown
Jason Brown
Jan 07, 2022
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Stopped in for pricing at the machine shop. Friendly staff seems knowledgeable.
Scott Plenderleith
Scott Plenderleith
Nov 30, 2021
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Very high level of service. Excellent communication, affordable prices and quick turn around. I couldn’t be happier.
Jeff Brinker
Jeff Brinker
Aug 04, 2021
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Very good people that knows what there doing and honest and take pride in there work just can't say enough about them
Godzilla Raceworks
Godzilla Raceworks
May 22, 2021
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They are our exclusive automotive machine shop for not only our OEM specification engine builds, but all of our premier high performance engine builds! Everything has been top notch from them so far. We by practice, double check all measurements, even those that have been marked good, and every single machining operation they have performed for us has been dead nuts on!
Would highly recommend
Scott Murdock
Scott Murdock
Dec 02, 2020
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H&H did a fantastic job bringing my tired, old 5.2 Magnum back to life. Work was top notch, fast, and fairly priced. I'm sure my engine was one of the least interesting things they've ever worked on but they always made me feel like a priority and were happy to spend time explaining things to me. There were several costly mistakes I would have made without their help. I highly recommend these guys and consider them my first stop for future projects.
Anthony Miani
Anthony Miani
Oct 26, 2020
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It's always a pleasure doing business here! Johnny, Tyler, Diane, and Sonny are all great people and show it with their quality!
Evan Murry
Evan Murry
Sep 11, 2018
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Called to get a quote for a valve job, talked with Tyler and he sounded VERY knowledgeable of engines (I'm a mechanic) no problems and he even explained every step of the service and what parts would be needed. Props to Tyler for amazing customer service!
Spencer Marvdashtipour
Spencer Marvdashtipour
Jan 10, 2016
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Johnny has been taking care of my machine needs for years with nothing but great results. He and his team seem to show more interest in your specific application, and are always knowledgeable. I work in the performance automotive industry and we have been using these guys through work also. They are always busy but the turn around time is the quickest I've ever dealt with. Simply love these guys and had to write a review about them!
-Spencer