Quote:
Originally Posted by BRENT in 10-uh-C
Back when Larry first introduced those heads, 98% of all engines they were installed on were cast bearings. The only bearing failures that were talked about on the forums (Ahooga and the original Fordbarn) back then were generally attributed to poor quality babbitt work. Today, using a 6:1 head does not need anything different than a 5.5 head.
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I mentioned in another thread, back in the '30s 6:1 on poured bearings was the way cars came from the factory, there's nothing weird about it. I agree that the conventional wisdom that HC is bad for bearings assumes that the engine has bad or worn-out bearings to start with.