With special tools 5187 and 5188 you use a torque wrench, not a breaker bar. Torque to 255 ft lbs. The 5188 extension inline with the torque wrench amplifies the 255 ft lbs at the torque wrench handle to ~350 ft lbs at the bolt. Give it a shot, I bet you can do it.
BTW the greenbook specs 332 ft lbs tightening torque at the crankshaft bolt itself.
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1985 744 gle d24t
1985 745 gle d24t
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