It appears that I miss spoke when I described the Hipo 289 block as having
four bolt main bearing caps. I should have said the following.
The Ford rough castings of the standard 289 and 289 Hipo were the same
with the same casting part number. The blocks that became HiPo's were then
machined different for the larger main bearing caps.
The standard 289 and 289 Hipo cranks were also the same casting. Hipo
cranks were selected for hardness based on a single Brinell test.
There will be a visible indentation on the crank indicating that the
crank was tested. This does not mean that it was actually a Hipo crank since
the cranks that were tested and failed to meet the hardness requirement were
then used in the standard 289 build.
Please forgive me, perhaps I'm getting forgetful. I think I made a mistake
once before but I can't remember.
John Logan
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