Will a siamese block be ok to run on the street?

I am wondering if I will have overheating problems if I build a siamese block hemi and run it on the street or long highway trips? Do these types of blocks have difficulty dissipating heat due to the way they are built?

No heat issues w/ Siamese bore blocks. Lots of people running them on the street.

Sorta off topic but the Chevy 400 small block used siamesed bores. They used those engines in trucks and heavy cars for years.

Yup. Hundreds of thousands of miles on those blocks.