GROWING ALUMINUM We live in a time where aluminum blocks with cast-in sleeves are common. We build several dozen Gen III and Gen IV GM LS type motors per year. We finish our cylinders .001” tighter on the aluminum block engines to compensate for the additional growth...

DIAL BORE GAUGE HOLDER Boring Bar Stands don’t have any place for holding your dial bore gauge. I bought a magnetic spay gun holder from a paint and body shop supply store. I stuck it on my stand as you can see in the picture and now that gauge is right where I want...

OLDS BLOCK REPAIR Sometimes the front of Oldsmobile blocks get worn and chewed up by the camshaft flange. This is often caused by additional load from a high pressure or high volume oil pump which makes the distributor work harder and pulls the cam back towards the...

Main Cap Tech One of the main problems with blocks that need to be align-bored is the lack of squish between the main cap and the block. What I am referring to is the interference fit between the cap and main register that holds the cap in alignment, and is the reason...

REMOVE THE WEB We have noticed through the years that many previously bored blocks come into our shop that have not had the web at the bottom of the cylinders relieved even with the bottom of the cylinders. Depending upon the bore’s oversize this can be a potential...

CAMSHAFT BEARING FUNDAMENTALS Camshaft bearings are more or less taken for granted. We knock out the worn pieces, press in a new set and assume everything will end up the same as it originally was. This is intended to explain why this assumption is not necessarily...