1989-1998 Cummins Hamilton Cams 103LB Valve Springs w/ Retainers (07-s-002)
There comes a point as rpm, valve lift, spring pressures and valve size increase, that a single spring is no longer up to the task of controlling the valves. This is when it is time to use a dual spring. Our springs are made in the USA. They come with Retainers and 10 degree locks. Good up to .700″ lift ( it is up to your machine shop to set installed height correctly).
You will either need to run without stem seals or buy comp cam 519-16 and howards cams cutter 92035 and 5/16″ arbor 92085. It takes about five minutes to modify the head to handle the smaller seals and can be done easily with a cordless drill.
Not all products are stocked in house. Please check for availability as some products may be backordered.
Most orders are shipped 1-2 weekdays after an order is placed, depending on availability. Some products are shipped directly from manufacturers.
PowerHouse Machining was founded with the vision of creating a one-stop-shop for all of your light duty engine needs. We pride ourselves on our industry-leading engine quality, dedication to customer service, and sincere passion for our trade.