Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

GM 3.5 L5 Atlas engine

General Engine Building Discussion

Forum Posts



Tech Articles

Talk about engine building here. New products, tricky questions or showcase your work - If it's engine building related it's welcome here.

= Resolved threads


Does anyone know of a shop that has experience doing head work on GM 5cyl engines? I have only found one guy in Michigan who has experience but he has a full work load and will be turning people away soon. His quote was $1,350 which I have no idea if that is low or high. It's for decking it, port and polish, bigger valves and redoing the valve seats. Also heavier valve springs would be put on which is a weak point in those engines. I know the other year people were starting to do stuff with the 4.2 inline 6 from GM which is from the same engine family. The pictures attached is work he did on a GM 4.2 inline 6.

Attached Files

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?