Roush 427R engine issue. Troubleshooting..

[blkasp2]

Hi guys,

I just got a car with a new Roush 427r 550hp engine and am having a problem. The car was delivered yesterday and ran AMAZING for the first few hours but then started shutting off under acceleration and had to have it towed. Here is exactly what it did. It would start normally but as soon as you gave it any major gas, it would TOTALLY shut off. It would then be difficult to start for a few minutes then would start and you could drive it for a few 100 yards and it would shut down again. Did this 5 or 6 times trying to get home and eventually it would not start anymore. Thought I burned the starter or killed the battery. Here comes the weird part. Towed the car to the dealer and when they drove it this morning, It ran PERFECT. even dyno tuned it to try to duplicate the problem and were unsuccessful. They did tell me the car is making 450hp at the rear wheels which they said is strong for the 427r engine. Any Suggestions?? Really do not want to get stuck again!!! Could it be the carb? I know I read somewhere that there were issues with the holley setup roush is using. Was thinking of ordering a pro system carb but not sure if that has anything to do with this. Other thought I had was the fuel pump but it has the mechanical pump so the dealer told me that was not going to be it. What else could it be? Anything that would be heat sensitive as it appears the problem happens after the car has been run for awhile...

Thanks for any input...

Ross