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Mike,

While you're here, I've got a few of questions.

Would you recommend bushing the lifter bores on a mild 400 horsepower street 400/451 stroker?


Depends upon what cam gets installed. Most likely not on a mild build but keep in mind a lifter bush job is less expensive than a full rebuild from a wiped cam if going flat tappet.
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What's the longevity of the bronze bushings? Might they last 100k miles or more in the said street engine if properly maintained?


Ampco bronze needs less lubrication than cast iron to not wear. As long as there is pressurized oil to the lifters, I don't see a longevity issue on a street car.
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My only real concern with the bushings is if they ever came loose from the block.

Thanks in advance for the insight.


They are pressed in and we use a sleeve locker



Yes, I am going flat tappet. So now you got me pondering your Block-In-A-Bag option since I don't think there are any shops in my area with the same level of Mopar expertise.

Questions:

I'm attached to my block, can you return the one I send you?

Is there any shipping cost included with the Block-In-A-Bag price or is it all extra?

Generally, how does packaging and freight work with an engine block? What's the best way?

Thanks again!