[eschaider]

This approach works well and is easy to do;

◉ Drill your bellhousing dowel pin holes 1/16" oversize,
◉ Throw away your offset pins,
◉ Install straight steel dowels,
◉ Place the bellhousing over the dowels onto the block,
◉ Snug it down but do not tighten,
◉ Make or get a dial indicator post threaded to fit your F/W bolt hole,
◉ Take out one F/W bolt,
◉ Screw you new indicator post into the bolt hole,.
◉ Use your dial indicator erector set to mount a dial indicator to the post,
◉ Pick 12PM / 3PM / 6PM or 9 PM as your start point,
◉ Preload the dial indicator 0.100",
◉ Spin the crank in 90˚ increments reading the offset at each point,
◉ Write the offset number with a sharpie on the can,
◉ Add opposing points (12 / 6 or 3 / 9)together,
◉ Split the difference,
◉ Use a hammer to tap the bellhousing into position,
◉ Repeat for 12PM / 6PM and/or 3PM / 9PM positions,
◉ Snug the bellhousing down tight and check centering one last time,
◉ Drill and precision ream two heavy washers to fit over the dowel pins,
◉ Push them over the dowel pins,
◉ Tack or weld (either works) them to your can,
◉ You are done!

The process is quick and easy and most importantly, from then on, the bellhousing will always go on the block exactly correct.


Ed