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Old 01-23-2024, 05:29 PM
tbub1956 tbub1956 is offline
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Join Date: Jan 2024
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Default 67 Gran Prix 400ci
I would like to build my 400 ci for street speed Thus far the advice I'e received is a performance cam, headers and performance intake. Any suggestions? Also the car has a M40 Turbo-Hydra transmission But if I'm driving in D and punch it, it doesn't downshift automatically. This is the third GP I've owned. Previous was 69 and 72. Any suggestions?t

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