Valley differential changed my gears to my 69 Chevelle and work was done perfectly and the car runs awesome after a test run on freeway.What I expected for my car handling and proformance. Thank you Miles. read more

I have been going to Mike for the past 5 years and he has done at least 6 differentials for me each time he gives me an amazing price with quality work and a good turn around. read more

Miles is professional, honest and very knowledgeable at his line of work. He was able to identify what my car issue was in minutes and didn't add or take shortcuts to fix my car's rear differential issue which I appreciate that very much. Hard to find shops with his kind of integrity. read more

Miles is a stand up mechanic who didn't try and sell me a service that wasn't needed nor required. He installed Nitro gears in my 68RFE transmission and had it done on schedule! So far things have been going great. I would recommend and use this shop again. read more

Valley Differentials - Rear differential on 68RFE 4.30 gear swap - Auto Repair Near Me - Stockton, California

Starting off the owner, Miles, is an amazing man and really communicative. He is very reliable as I had dropped off my very rare 3.23lsd, and I received it and am extremely amazed at the results of the product. It works amazing in my BMW. More importantly, Miles was able to contact me and keep me updated as he was rebuilding my differential during a shop change. I am extremely happy for the price I paid as it was definitely worth the money, affordable, and for a first timer I'd recommend you come here as you'll leave happy! read more

See all

I found Valley differentials on yelp! I travel for work and really rely on yelp to find trusted places. Literally can't say enough good things about Myles and his little shop here in Stockton! I rolled into town with a rear differential on my jeep going out... I just had it serviced at the dealership back home and the dingleberries forgot to put oil back in the Differential! And of course they gave me every excuse under the sun other than that they made a serious mistake! There was a bit of a wait to get into Valley differential, but it was worth it. He had it fixed and back on the road within a day and a half, and for a very fair price. He even recommended a Alignment Shop in town to help me get my suspension set up on my jeep. Very thankful I found these guys! read more

Valley Differentials - Auto Repair Near Me - Stockton, California

I had my 68 Mustang stock rear end replace by a 355 posi and it is absolutely professionally done by Valley Differentials and it is fantastic. Very reasonable with top quality and professional job. ( Miles, the owner, is so super and kind, to deal with. My car was done on time as promised. I highly recommend Valley Differentials for your rear end needs. read more

We took my moms Toyota 4Runner here. I believe it was Miles who helped us. I apologize if I got the name wrong. He was extremely nice and willing to work with us for some time restraints we had. The car is repaired and my mom says it runs great. I would highly recommend this business. Thank you for your awesome and thorough service. read more

this is a review many years in the making. recently had to go to stockton for something and came out to old west ln. i guess valley diff isn't there any longer. but pleased to see they are still in stockton. i took my 1996 chevrolet impala SS to get new diff put in many moons ago. at the time i was living in oakland; some folks referred me to miles saying he's best in the biz. i remember miles being a kind fella and easy to talk to. definitely got my supersport right. these days i'm in sacramento, and i still have my super sport. i know if i need to get something done for the rear end, i'll definitely give miles a call. read more

I was reviewing my records to find Valley Differentials to recommend them to a friend. I found the paperwork from May of 2004, they had replaced diff gears in my El Camino and added a posi. It is still running great never had an issue. I did follow their break in instructions to the letter. Thanks Gordon Thielvoldt read more

Went here based on 5 star rating for regearing and lsd's put on my 2017 Jeep Wrangler. The customer service is excellent and patient with questions. Was completed on time and everything , thus far, is working fine. Gently breaking in the new gears now. I'll update if I have any issues. But as of right now it's a five star rating!! read more

Valley Differentials - Auto Repair Near Me - Stockton, California

Edit: Bumped to 4 stars. Little time puts things in to perspective. Myles is a good guy who did good honest work. I don't know who is really to blame for all this, but I'm gonna give them the benifit of the doubt. The price was decent and they are pretty friendly. It took way longer to get the part than expected, and they told me it was Maita Subaru to blame for many reasons (read my review of them to see it). Based on the horror stories there I don't see being lied to by Valley Differentials. The delay kept mkney out of his oocket and me out if a car. I would have to call them for updates since he always seemed to forget calling me back the next day, but it wasn't horrible. Partly could have been me wanting a daily update for such a small job. read more

If you have any need what so ever for differential repair, service, inspections, you name it... Myles at Valley Differential is absolutely your man for the job!! I cannot stress enough just how great of a guy he is and his work is as solid as it comes. Not to mention he backs up all of his work 100% with the included warranty. He did a full build in my 1972 Pontiac GTO/Lemans which included all bearings, seals, Eaton posi, and 3:55 gears. It was an 8.25 BOP rear and required a different yoke that would he would have had to order and would have delayed things, but Myles being the great guy he is, he was able to make a few calls around to friends in the industry and found me a yoke to be compatible with my requested gear setup. To top it all off.... he didn't charge me one penny over the original quote, and even got it done before the date promised. Once done he took the time to chat about proper additive (FORD friction modifier), proper break-in, and any other questions I had throughout the whole thing. The Lemans is still going strong and that was over 6 years ago! I have made it a point to tell anyone and everyone I talk to that I know needs some type of differential related work, or plans on getting some work in the future about Myles at Valley Differentials, and when I saw his business listed here because I needed his number to call about some work on my truck, I wanted to make sure to take the time to leave him a review here as well because I cannot say enough good things about Myles, his business, and the way he conducts himself and his business in general. If you read nothing else just know this... A++++ work, great guy, completely fair prices, solid quality work, and the last mechanic you will need as far as anything differential related!! Don't even hesitate to call and talk to Myles and I know he will take great care of you and your vehicle. Keep up the great work Myles, we need more solid guys like you in the industry! read more

A++++++ Highly recommend I needed to change my gear ratios for my 2010 GMC Sierra to tow a trailer that was a little heavy for my truck. Valley's quote was lower than all the other guys I had contacted, so I elected to have Valley do the work. Little did I know that GMC had a specialty transfer case required to complete the gearing change. Rather than put spacers in and complete the work on the cheap, Miles special ordered the expensive part and completed the work quickly without even batting an eye. Even offering to cover the additional cost of the part. A real stand-up guy and even better mechanic. I was blown away by the level of the work and attention to detail that Miles put into my truck. Would recommend Valley Differential to anyone and everyone. read more

I was recommended by my mechanic to Valley Differentials for changing my rear end ratio. Myles ordered OEM gear and pinion. 20k miles later everything is quiet and no leaks. Could not be more satisfied. Honest, knowleagable, and fairly priced. John M. read more

Brought in my 59 Chevy truck to change gears. Miles was professional and went the extra mile. The cost was more than fair and the truck goes faster. No more holding up traffic. Miles is an awesome old school mechanic that knows his stuff. Glad to have found him!! read more

Great service Miles realy knows his stuff.whent in to get my 96 jeep grand cherokee fixed he was able to track down a new front differential housing and gears for a good price. Took a bit to get there but once it arrived the turnaround was quick.if i ever need diferential work done again this is wear im going read more

I accidentally pulled my front cv axle on my Nissan Armada for doing some suspension wrk myself, i tried put back in, but it was wobbling and leaking little trans fluid. I took it to the dealer and they want $2+k to put a used one. Went to 3 mechanics and told me the same thing. So someone recommended Valley, so i talked to Myles and gave me an honest answer, he said if i want to save money he can rebuild the f@cked up nissan differential. So i trust him to do so. That was 3 months ago and my Truck is running like new again! No leaks and wobbled anymore. I saved more than half what the dealer charging me and he gave me 1yr warranty parts and labor. 10% off the original cost... thanks Myles, Keep up the Good wrk! God bless. read more

Very good service, he upgraded the gears on my Jeep couple of weeks ago. Did a good job and didn't take his sweet time. Front - back done and was ready for pick up the next day. Also took his time to go over things he had on paper with me which helps a lot. Would recommend to everyone that's looking for good honest shop. Thanks myles read more

I can't tell you how pleased I am with Valley Differentials. I had them work on my 57 Ranchero. Needed to have higher gears installed. Miles did a great job and was always pleasant. Everytime I've talked t him on the phone, he has been very polite and helpful. When he did the gear change he found some other issues. He showed me what they were and made the repairs. He showed me the old parts that came out. The before and after difference was incrediable. Besides the gearing difference which I would expect, the car was so much more quiet when driving. It was night and day. Tomorrow I have an appointment to have another car done. I would highly recommend them. Skip Oakley CA. read more

Came in to have the pinion seal replaced on my 2006 F250. Miles did a great job and was very nice! Definitely recommend

It's rare that you find someone as genuine as Miles, the owner of this shop. Many times noses are in the air and unwilling to ACCOMMODATE the consumer, well he did just that and more. The day of my appointment he started his day at 3:00 to travel past Sacramento for special parts on another job so he could have mine completed by the time promised. He completely put his customers first and I will definitely recommend all future friends and family! Thank you for an awesome affordable clean job!! 4.10's in Mustang (check). Just gotta break them in and reap the rewards!! Thanks again!! read more

If you need your differential worked on, Miles is your man. He was booked for a week in advance. He did a great job at an honest price. He is worth the wait. An honest repair shop. read more

Myles is a very honest trustworthy person to work on your truck if you are having differential problems! Great communication! Thank you!

Myles was an outstanding guy. Very good prices because of low overhead. Was kinda skeptical at first because of the location but who wouldn't be. It's Stockton. Did a great job installing my ox locker in my Toyota. I'd recommend this shop to everybody. read more