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Originally Posted by Fred T
Grade 8s are okay, but overkill by a long shot. Shear strength on the steel rivets is close to a grade 2. I use grade 5 to replace rivets. And, yes, the hole needs to be a tight fit. I also don't mess with lock washers on those locations, red loctite works better.
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Agreed, locktite or pinchloc nuts.....lock washers are "tabu" on that stuff  crazyL
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
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