Manifold Heat......

Swifter, I have the 6.1 on there now and it doesnt have any foam thingy, but being aluminum it does soak up the heat really fast. The car manifold does have one, but mine is MIA so I also got some phenolic spacers and this should help out alot. I also made a valley pan from aluminum and used some 3/8 spacers to get it off the block, kinda like an air gap, also put in the 180 t-stat which has helped quite a bit. I'm on the right track and I'll have it all figured shortly.

If you guys wanna do what I did with the manifold, just break out the dremel and get with it.