* Block Condition: The condition of the block is crucial. Re-sleeving is typically done when the cylinder walls are severely worn or damaged beyond repair through honing or other less invasive methods. Significant scoring, cracking, or excessive wear necessitates this more drastic measure.
* Specialized Equipment: Precision is paramount. You need a machine shop with the appropriate equipment to bore the existing cylinder walls to the correct size to accommodate the sleeves, press the sleeves in accurately, and then hone the sleeves to the final size for the pistons.
* Sleeve Material and Type: Different sleeve materials (e.g., cast iron, ductile iron, nickel-silicon-chromium) offer varying levels of durability and are chosen based on the intended application (street use, racing, etc.). The type of sleeve (e.g., wet or dry) will also impact the installation process.
* Cost: Re-sleeving is an expensive repair compared to other engine rebuild options. The cost includes the sleeves themselves, the machine shop labor, and any other necessary parts (pistons, rings, etc., which are almost always replaced when sleeving).
* Skill and Expertise: This is not a DIY project for the average backyard mechanic. Improperly installed sleeves can lead to significant engine damage. A skilled machinist is essential for a successful outcome.
In short, while it's *possible*, re-sleeving a Chevy SB400 is a complex and costly repair that should only be undertaken if other less-expensive repair options have been exhausted and the block is deemed salvageable. It's best to consult with a reputable engine machine shop to assess the condition of your block and determine if re-sleeving is the right solution.
