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Old 08-19-2008, 02:44 AM
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Grout filling after machining?

I have just assembled my 408ci sbc and have realised it would have been of huge benefit on a +040" block to grout fill the water jackets up to the welch plugs. Can this be done to a assembled engine or will it distort the cylinders too much?

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Old 08-19-2008, 04:45 AM
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This is much better done before machining I would not do it now due to possible distortion of the walls.
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Old 08-19-2008, 04:56 AM Moderator

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Poplar opinion is that it needs done before machining. I personally have never filled a block after finish machining so i can't give you numbers on how much (if any) the bores will distort. You need to find the actual numbers the bores change (if any) and then make your decission weather or not it's worth it in your application.

What HP is this engine making??? What is the application of the engine??? drag only, street only, etc????

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