Hi,Does anybody know the type of service manual that I'll need to service my 1970 barth? I'ts on the chevy chassis with a 350.Any info would be appreciated. Thanks Steve

There is a thick Chevy Light Truck Service Manual and skinny Chevy RV chassis service manual.

The truck manual covers the trucks and vans, and the RV manual is a supplement that covers the few things that are different for RVs. The earliest one is probably the best for your model. It has an orange cover. I think it was published in 85 or 86, but it goes back.