413
nce you throw away the heaoYES! Great engines as long as it is from a car and not an industrial or motor home unit.
Nothing wrong with a 413 Industrial block of truck/Motorhome block
after you toss away the Heads/Intake/Waterpump.
In the 60s/70s I bored them always to 426 plus 030 and ran them in our
Stock and Superstock Max Wedge race cars. They still generally soniced
tested as well as a production 426 Max Wedge block and are amazing thick and
very rigid.
We had a cutter that fit in the bore and reproduced the valve reliefs
in the bore and drilled the oil passages to Max Wedge size, which you
do not need for most any other application.
On some of the 426 and 413 street block they were even the very same
casting number back then.
I sold all 6 of my industrial 413 blocks for $400 each.
I have a Standard 413 block that belongs to my machinist for $350 on this site
that he was saving for his Max Wedge. I have not unloaded it yet to see if it is industrial.
They ones that sonic tested really well I bored to as far as 4.32 (440 Standard)
without a problem ever.
