Hello HAMBland, I, like many of you, have many, many engines and heads lying around. Lately, I've come into for once having lots of time on my hands (my project lost funding at the university and my position was eliminated... sigh). Dave Vizard did an excellent job writing "How to rebuild your SBC", and in it he describes options for refurbishing valve guides. I feel that it would be a good idea for me to learn to do this (since I have so many heads that need it) with thin walled valve guide inserts. There is a page that illustrates the process with great pictures, but more intriguing is the fact that it appears to only require a low speed air drill (and time and patience and some minor machining skills). Of course, that was in the mid seventies... the only tooling I have been able to find online is for dedicated valve guide machines-- much more elaborate and expensive than the drill Vizard was using. My question is: Can any of you provide a source for the reamer he is using to initially oversize the valve guide for the insert? It has a bare pilot with a threaded guide in front of the reaming flutes, which is different than the reamers I see online from Goodson's and Cylinder Head Supply. Also, for installing the liners, Vizard uses an installation mandrel with a brass hammer... the installation tools I see online require an air hammer. Any help would be greatly appreciated-- either a source or even the correct name for the tools. Specifically I am looking for the reamer with shown in the photograph in the top right of the first page. Thanks HAMBsters! acosta Oh, I also plan to invest in Neway cutters so I can do a three angle valve job and put fresh faces on valves... hopefully in the next couple of months I can put up a thread that documents complete refurbishing of sbc heads in a home shop without dedicated equipment.