318 Poly A engine in a 67 Cuda

Rat Bastid said
Just for reference, the cores for the Poly and the LA are the same. That’s why the lifter bank angles are so jacked up on the LA. It’s a Poly core.

The only thing lighter on the LA blocks is the cylinders. They are generally thinner.

Whatever power a poly will take an LA will take.

Not many production blocks will take 700 hp unless you believe in Santa Claus.
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Have you ever looked at a poly 318 block? The Chrysler and Dodge poly Motors were built off of the early Hemi cores. The Plymouth was its own block. As for your rude comments about Santa Claus please keep them to yourself there are still Believers out there.