Not Ranked
Roush makes three 427. The S, the SR, The R. The SR seams to be the best of both worlds in excess of 500 hp but still drivable. The R likes to live at high rpm. I am confident 99% of the problem is in the carb. As him to pull the air cleaner and look at the front of the carb, there should be a green dot made by a paint marker. I bet he finds a different color. Knock $1k off for a new carb, call Roush and tell them you want this was serviced, I ams sure the cost will be less than $1k but you need to reimburse yourself for the troubleshooting
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