Go to the oldgmctrucks.cpm site an you will be able to get all the info needed to repair your 50. You may be encouraged to go with a 270. easier to find parts and way more power. I have 1 in my 40 GMC and am very pleased. Good luck on your project. Where are you located in Wa? Joe


just retired and finally making headway on my project truck. 1940 GMC AC152.