The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Correct Timing at Idle for 75 GMC Motorhome

campingman · 12-17-2014, 03:34 PM

Yea the closes I can find to the book is the specs Autozone lists for a 1975 G3500 Vandura. Which is about the closes I can find make/model that matches it. Its basiclley a G3500 frame with a van nose and a 22 foot camper on the back. Kinda like this one in the photo. autozone says 8 degrees. But I don't know if thats for just a truck or van. also says light duty timing. cant find heavy duty

12-17-2014, 03:34 PM	#4
campingman Registered User Join Date: Dec 2014 Location: Lexington Posts: 15	Re: Correct Timing at Idle for 75 GMC Motorhome Yea the closes I can find to the book is the specs Autozone lists for a 1975 G3500 Vandura. Which is about the closes I can find make/model that matches it. Its basiclley a G3500 frame with a van nose and a 22 foot camper on the back. Kinda like this one in the photo. autozone says 8 degrees. But I don't know if thats for just a truck or van. also says light duty timing. cant find heavy duty Attached Images