You are running an index class and need to slow down a little more. All of your tricks are in a MSD 7531 box like huge timing retard in low gear only. Don't get happy and lower the shift point without first looking at the value you have in RPM drop to recognize high gear. Pulling 22 degrees in low gear slow you down a lot. Pull the normal 22 degrees in low go to high and the engine is not coming back to life. [Edited by Moparts - Family Friendly Site - Keep it clean]. 7,800 converter. 8,100 shift point. RPM drop to recognize high gear 400. Still pulling 22 degree in high gear. Instead of running 5.95 you just ran a 6.60.

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