I was thinking about getting a heat spacer between the upper and lower intake. I was going to do this since my upper intake gets so hot. Think its worth it? Anyone have any good or bad experences with them?
This topic was covered not even a week ago. The general opinion was that they don't do squat, they're more of a benefit for someone looking for extra clearance between their intake and valve covers. Some folks actually had more problems out of them than anything else.
A heat spacer will only make a difference if you have the EGR ports blocked off at the heads and the coolant lines disconnected from the EGR spacer. Otherwise its a waste of money unless you need it for clearance.
I'm running a spacer with my Holley Systemax... it reduced the temp of my upper intake considerably, I was quite suprised gotta be helping out some. I have had no probs with mine.