Duffin Diesel

Duffin provided honest appraisals and estimates, accompanied by hard work and excellent results. They machined the heads and block case halves of my ej257, and when I asked questions they had all...

I have to say I am very impressed with this shop. They offer world class machining services and expertise on a wide array of engines, something that San Antonio needs. I recently took a Pontiac...

Took a couple small engine cylinders to have bored out one day and they were ready the next at a very fair price. Extremely accurate and precise work by very passionate staff. Customer service...

This is a great local machine shop in NE San Antonio. They do excellent work for a great price, and have never failed me when it came to a project. The owners and staff are "old school" so if...

I got my LS3 heads and engine block board and cleaned by this machine shop I was blown away by the price and the excellent work they did hands-down one of the best machine shops I've ever used...