I see no reason they would not work in a day-to-day driver. From what I've read, there are only 3 material types available for the King bearing that fit this engine: SI; HP; and XP.
The SI Series uses material K-788 which has high ratings for anti-seizure, wear resistance, and conformability/embedability. Load capacity is moderate.
The HP Series uses material K-787 which has about the same ratings as the SI Series, but says it is suitable for street/strip as well as some circle track racing.
The XP Series uses K-798 which to me does not seem to have any advantage over the HP Series for a street engine, is considered a race only construction, and is more expensive.
So after all of this, I would say that either the SI or the HP Series bearings should perform well for your engine.
Edit - After looking at several other builds many have used the SI Series for street cars.
One thing to keep in mind when you are looking at specifications. Racing rated parts may give you the impression that they are stronger and better. This may only be true in race applications where engine hours and mileage are relatively low compared to a street driven car. A street car requires some durability as well. Something some race rated parts may not offer and therefore may not be the best choice for your engine.
The SI Series uses material K-788 which has high ratings for anti-seizure, wear resistance, and conformability/embedability. Load capacity is moderate.
The HP Series uses material K-787 which has about the same ratings as the SI Series, but says it is suitable for street/strip as well as some circle track racing.
The XP Series uses K-798 which to me does not seem to have any advantage over the HP Series for a street engine, is considered a race only construction, and is more expensive.
So after all of this, I would say that either the SI or the HP Series bearings should perform well for your engine.
Edit - After looking at several other builds many have used the SI Series for street cars.
One thing to keep in mind when you are looking at specifications. Racing rated parts may give you the impression that they are stronger and better. This may only be true in race applications where engine hours and mileage are relatively low compared to a street driven car. A street car requires some durability as well. Something some race rated parts may not offer and therefore may not be the best choice for your engine.
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