Frost Block

[gsniegow]

Forgive my ignorance, but what is a "Frost Block"?  I tried searching and could not find any explanation.

Thanks!

[4cruzin]

A block that someone filled with water and lives in Michigan during the winter . . . .    See it a lot with some of the boats around here . . .

That is the best I can come up with . . .

[John_Kunkel]

There are some 440 blocks that have  heavy reinforcement ribs on the sides...I've heard them referred to as "frost blocks".

[charger Downunder]

Never new that.

[tan top]

ive heard of them too , called a   ( cold weather block )     never seen one in real life , only a picture ! got an ideal they were an industrial / truck  block !!  sure ive  read somewhere a variant of the 413 /426 wedge could of  been a cold weather block also , but don't quote me on this , it could of been something ive read years ago , & got it confused mixed up with  something else  , like the 440 one 

[gsniegow]

There are some 440 blocks that have  heavy reinforcement ribs on the sides...I've heard them referred to as "frost blocks".

Thank you

[el dub]

Would there be a corresponding number somewhere if the blocks were different?