How I swapped my K frame last week
5/16 inch, grade 2 bolts have a safe working load of around 300 lbs times 4 equal 1200 pounds. Plenty strong enough to support the engine. The strength of threads on an aluminum intake, not sure. A safety chain to a stronger attachment point, just in case, might not be a bad idea. I have used a 2x4 and a strap to support the rear of the engine before. Worked great and no jack under the car to get in the way. Rod
5/16 inch, grade 2 bolts have a safe working load of around 300 lbs times 4 equal 1200 pounds. Plenty strong enough to support the engine. The strength of threads on an aluminum intake, not sure. A safety chain to a stronger attachment point, just in case, might not be a bad idea. I have used a 2x4 and a strap to support the rear of the engine before. Worked great and no jack under the car to get in the way. Rod
