Fuel line run question
Also to note: Gasoline is more volatile than ethanol (i.e. has a lower heat of vaporization value compared to ethanol), so running gas with less ethanol really doesn't sound like the move here. I have heard this for many years, but looking at the delta H values, it just doesn't make sense to me (maybe I'm missing something). Finding a better route for the fuel lines, or better protection from heat soak and radiant heat is what you need.
On my Barracuda I have the fuel line (1/2 aluminum hard line) from fuel cell to the passenger side shock tower with heat shielding (similar to the aluminized shielding above), then a single 1/2 Push-Loc line (NHRA rated) to the carb....its not the prettiest setup, but it works well.
Edit: Just re-read the original post....I would do whatever you can to NOT have the fuel line above the collector, that is going to cause you all kinds of problems with both heat soak and radiant heat. I would (at the very least) move it off to the side to get less heat soak.