Interesting story. My parents owned a 1969 Oldsmobile Delta 88 with the 455 - 2bbl carb ( HP ?). By 1973 I was old enough to drive. I was allowed to take the car on dates. Of course I had to be back by 11PM which meant that I would drop my date off on the other end of town and I would "fly" back home. I never got stopped in that car. I graduated from HS and was allowed to buy my own car. I found a 1969 SS Camaro - Hugger Orange, with 396 - 350HP. This car came from the factory with expansion chambers - no mufflers. I only paid $1150 for the car. Oh how I wish I had that car now. But I only had it for 3 months. Later, since we are talking about 455 CID engines, in 1977 I purchased, for $3000, a 1973 Pontiac Trans AM with 455 CID and Shaker scoop. The scoop came with a cover on the scoop - i.e non functional, but the person I bought the car from had removed the plate. This was a nice car - 300 HP, but it was not the Super Duty. It was my understanding that the Super Duty was a rare engine in the TransAm. I understand the the SD had solid lifters which meant, as I understand, that the valves needed to be adjusted often. I wish I had that car too, but who knew back then that the cars would be worth a lot today.
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You mark the bolts after they have been torqued, not before they are removed. by marking them after they are torqued, it is a quick visual inspection to look to see if each bolt has a mark on it and it lines up with the mark on the item that it is holding. Is it impractical to mark 24 bolts? I was the supervisor for a 16 Acre solar farm. Each bolt for all of the tables and all of the solar panels were torqued and marked. In this way, I could verify that each bolt had been torqued and tightened. In addition, when superiors came by and checked on the work, while they didn't check the whole field, they would do random checks. If everything looked good - great - no problems.
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