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Lsa Engine Flexflate Bolts

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14. The crank also has a unique bolt pattern, so we sourced a special flex plate and torque converter from TCI to go between the LSA and TH400 automatic. The flex plate has an eight-bolt crank pattern and both a 10.75 and 11.063 torque converter bolt pattern. Two yellow caps cover the inlet and outlet ports for the internal charge air cooler.