D&J Precision Machine

Reviews

Reviews are sorted by relevance, with the most helpful and insightful feedback listed first for easy reference.

  E Tee
7 months ago
I had a custom F550 with a 5.9 cummins that had some issues. I contacted Drew and we came up with a plan for a 6.7 street performance engine. The engine has been amazing. Well tuned for pulling heavy, extremely clean running and better mpg. The 9/16 head studs are a life saver. Thank for the quality build and great customer service.

  Trader Swapp
5 months ago
Awesome products! I ve got their billet valve cover, 115lb valve springs and retainers, as well as their billet freeze plugs on my 2004 with a 6.7 in it. Would buy all of the products again. Thanks guys!

  Brandon McIntosh
5 months ago
I ve bought a few Billet Valve Covers from D&J, they have by far the best quality and functionality over any others I have used. Great product from great people! Thanks!

  Melisa Hayes
5 months ago
Drove 8 hours to pick up my stage 2 cylinder head. Nicest, most helpful group of guys I've seen at any business, took the time to listen to my build plans, to make sure I was getting what I needed.

  eric f
2 years ago
Let me start off by saying I drove 8 hours from New York to drop off my cylinder head core, and pickup my new head from these guys. Hands down the friendliest and most knowledgeable Cummins machine shop you ll find anywhere period. I had no idea how bad my cylinder head was, I had a mysterious ticking that would only happen when the engine was warm around 1900rpm. After installing this head the truck sounds and runs like it s brand new. I have compound turbos and 100% over injectors and with the new head and beefy pushrods and valve springs from D&J the truck feels like it gained hp from the head alone. I m very impressed with the craftsmanship that went into this cylinder head, the packaging everything. If you need a cylinder head look no further! Don't waste your time with a local machine shops that have no experience with Cummins.

  James Healy
2 years ago
I have bought from D&J on several occasions. All I've ever had is good experiences. Drew has always taken the time to help me get my rig situated. Plan on spending more of my hard earned cash there.

  julius slatlem
5 months ago
Best cummins engine builder in world. A big thanks to Josh and Drew for all help and support.

  Matthew Boudreau
3 years ago
Purchase the stage 2 head, billet timing cover and freeze plugs. All was built beyond my greatest expectations!! Thank you so much drew for the great workmanship and the time to help me out with every question I had!!! Would recommended d&j to everyone..

  Randy Garcia
5 years ago
My experience with these guys is less than stellar, they made pistons that were 15 thousandths less than my bore and were told what the final bore was and they said the pistons were made too fit. This is what caused my motor to fail at 100 miles, look elsewhere for reputable shop! Drew is about excuses and if you do not mind throwing your money away then by all means deal with that disreputable horses butt!!!!

  Cyclone Truck & Auto Repair
5 months ago
The best products and the best customer service hands down!!!

  Josh Hlad
5 years ago
Awesome shop with great guys!

  Christian Henderson
a year ago
Excellent customer service and support. Would definitely recommend to anyone.

  Larry Mahon
3 years ago
Great, professional group. Shop was clean, work is top notch.Thanks

  Bill Maple
3 years ago
Besides Bethlehem, the Lord picked a spot to put on earth known as D&J Precision Machine, Cambridge OH

  Renee Blair
a year ago
Amazing!

  Mac Knight
4 years ago
Great guys with awesome products

  Phil Rauch
7 years ago
Great place to deal with!

  Mark Huck
3 years ago
Not a good experience