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Discussion Starter #1
what is a "53" block?
why is it bad?
how do i tell if my truck has one?
 

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its is not a "weaker" block.


i heard it can some times under one of the freeze plugs on the right hand side....if i rember correctly.

there are many high HP guys with the 53 block, and they arent cracked.......it just happens i guess
 

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Discussion Starter #4
thanks for the info, im going to look right now
 

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Discussion Starter #5
i just looked and couldn't find the number 53 but should there be another number in its place??
 

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its either stamped on the drivers side by the injection pump or on the passenger side below the oil filter. mine was right below the injection pump. and yes all blocks are stamped
 
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