- Dec 19, 2010
- 5,719
- 4,238
- 224
Hot tanking is just a method of cleaning the block after it has been disassembled. It gets all of the old crap and looks, essentially like a newly made block. It is very effective, not as many shops perform this properly anymore because of EPA mandates with the chemicals used and disposal of the wastes after cleaning the block. Uncle Sugar wants his dime in other words.
Magnafluxing the block is a method of checking for problems in the integrity of the block (cracks).
The actual number is .010 on the block. This mainly means a hone will be run down each cylinder to restore the cross hatching the rings need to provide a seal and prevent blow by of oil to the combustion chamber or air fuel mixture into the oiling system. If you hear of a larger number like .030 (30 thousandths) or larger, it means at least a slight over bore of the cylinder. .010 would mean new rings, .030 and larger means new pistons usually. When the number is larger than your .010, it means it's being rebored. When you hear of a 347 or a 363 engine based on a 5.0. It means it's been rebored extensively and/or had the connecting rods changed for a longer stroke, which means a new crankshaft as well. All in effort of more cubic inches. Because there's no replacement for displacement (ok, a turbo or sc can be argued here, @Boosted92LX ?).
Cubic inches are hard to compete with.