Its the tranny.....I used to do the same thing in my 87 turbo thunderbird. It locks up and just starts to break shit. Not to help the shocks were real bad as well. Damn fords LOL but that looked like a buick tho? Funny tho
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Mod's- Sprint springs, Short ram intake, Stock Sport exhaust, Short throw shifter, M62 roots blower (17.5PSI) , Cobra HE and Sc/dyne Header, 3' DP and QTP CUT OUT. 2.6 Pulley and 60LB Injectors @288WHP & 258lbs/tq.