Sbc 350

[noah_t]

So I have a 350 in my 1986 chevy k20 and am having problems with it. Idles fine but once it goes into gear it won’t stay running. It’s been sitting for a while so I changed all the fluids. I’m just wondering where to start. Thanks

 

[Vbb199]

So I have a 350 in my 1986 chevy k20 and am having problems with it. Idles fine but once it goes into gear it won’t stay running. It’s been sitting for a while so I changed all the fluids. I’m just wondering where to start. Thanks

What rpm is it idling at in park?
Hook a vacuum gauge up to it and see how many in of Hg You have in idle.

 

[Vbb199]

What sort of shape is the iginiton system in?

 

[1987 GMC Jimmy]

What’s the history of the problem? Just pop up overnight, doing it a long time, gradually got worse, etc.? A visual vacuum inspection would be my first task, then taking a reading as mentioned, then checking my base timing, then making sure my curb idle speed/mixture were set correctly.