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1975 Too much power?

Transmission

Vehicle Information: Year: 1975; Engine (Size, Modifications): 3.3 twin turbo high butterfly electronic injected; Total Mileage: 110,000;

My car has made more than 800 horses for the last 15 years. This year I ungraded my computerized engine management system. I live in Florida and have been tuning it during the summer. Makes great power but last week it cooled off here and when the car hit 5000rpm in second,the clutch broke loose. I am running a sachs 935 pressure plate and kevlar clutch disc. The other thing is the car is geared for speed. Second goes from 63mph to 125mph. Just wondering if the motor is now spinning up too fast and the clutch can't hold or am I trying to put more through that cluch than it was designed to hold. 3.3 twin turbo high butterfly electronic injected

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