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1956 235 engine troubleshoot


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I have a 1954 Chevy 3100. Forgive my low mechanical skills but here is the issue. The previous owner stated the engine is a 235 from a 1956 truck. It threw a fan blade so I needed to replace it. Once ordered I realized upon installing that there was a different bolt pattern drilled on the fan. So being impatient I decided to just drill the same pattern into the new fan since it took me forever to get a new one. Once I mounted, I now I know why the old one threw a blade, the blades hit the bottom pulley of the engine.

So could someone guide me to what correct fan to buy or does the “bell” that I’m mounting the fan to need a spacer or something? Either way, I know a new fan shouldn’t require drilling so something is wrong.

Thank you

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“New” to me. But yes, it is used. Came off of another 235 engine. Which is why I’m confused as to why the bolt pattern is still wrong. Same blade and bolt pattern from the one that broke. Both had to be drilled. So I’m assuming it’s not the correct year/size engine that I was told? Or something else is aftermarket.

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Looks like you are trying to mate a post 55 fan to a pre 55 water pump. Personally now that you have drilled it out I don't know if I would trust it. It will probably crack right around the holes. The post 55 fan mounted on a shaft that stuck out further and missed the lower pulley that way. Some of the pre 55 fans were notched to miss the lower pulley, others had smaller blades since the water pump pulley on a pre 55 fan spins faster than a post 55 fan due to the size of the pulleys. Art 

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Make some yard art out of it. An old bearing a few pieces of pipe and you've got yourself a windmill. Just have fun with it, or give it to someone who has the time to be creative. Art

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