Ford 460 EFI - E350 29 foot motorhome
I've read a few comments about ford 460 engines ceasing when running on very hot days. I've had this experience - running into Butte Montana with my 1995 460 EFI engine 29 foot motorhome. Coming up a steady steep grade in 95 degree weather, we topped the pass and headed down into Butte and about 3 miles from the city the engine just quit. I had to wait an hour for it to cool. It was either a vapor lock or the tank was down to less than a 1/8 full and the engine was just fuel starved - though I was able to start and continue after waiting an hour. I phoned the ford dealer in Butte and they thought the oil pan filter was plugged and that at worst I might have to replace the engine (so they said!). I think it was both low fuel starvation and a very hot engine - possibly a vapor lock.
Has anybody else had a similar or related event?
On another note, any suggestions about improving fuel economy and power. I've read several web sites and there are mixed reviews about chips verses advancing the base timing a few degrees or increasing air intake and exhaust output. Any comments advice here? Thank - David