406 -10: block

[dirtrace09]

The ones I have seen break have been due to heating/cooling issues.

[dave41]

how do you strap the rear main cap with oil pump mounting

[dereksehi]

They make two different rear straps one for dry sump and one for wet sump. The dry sump strap is just solid steel whereas the wet sump has an oil passage cut in it just the the rear main cap does. If I recall right the straps are .625 thick and that amount has to be cut off the bottom of the rear main cap in a milling machine you will have to drill the dowel holes a little deeper and you will want to do this first. The dowels for the oil pump will have to be longer as they will locate the pump and the strap also if you stud the block the main stud under the oil pump has to be a special length with 12 point head to clear the pump.