Here's the quote: "Add a 1.5 in spacer sleeve all 8 cylinders"

This is a whale of a lot of work to be doing.

9" deck is what most smallblock chevies are after they get their decks straightened out. They are 9.025" stock. Siamese SBC blocks can go 4.185" and a Siamese Mopar with its slightly wider bore spacing May be able to go to 4.2 or more. Non-Siamese blocks are limited to maybe 4.100.

A 4" crank with a 6" rod and a 1.0" compression height gets 440 cubic inches using a 4.185 bore. The 434 or 440 smallblock chevy is pretty common in racing circles. That's a lot easier than sleeving all 8 holes.

But I'll never do any of that as there isn't enough money in the old till.

And that 3.78" bore $300 block is good for building a 400hp 327. That's all.

R.