roller cams for la 360 /questions

Late year LA engines are also called “Pre-Magnum” engines. In other words, late year LA engines are roller cam engines that have spiders.
I am building one for my 1965 Dodge Dart with the roller cam.Came out of a 1999 Dodge Ram 2500 which did run good.Yard I bought it from had it in the truck before it was pulled and I heard it run telling them to pull it