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Ok so would this fall under the 360 with the same water jackets as the 340?

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Supposedly several early years of 360 has 340 cores and could stand a massive overboring (given that a 340 is a 40 over 360 bore std) but I'd sonic check but just myself I'm not a fan of going over any more than needed so the bores stay rigid/stable and I'll gain power somewhere elso but that's just me & I do happen to have an early 360 std block (w caps) that I'd let go for reasonable money if you twisted my arm a bit