The Dodge 241, etc. problem was no harmonic damper.
All poly crankshafts were high quality forged steel with rolled fillets, and use the same unthreaded 8-bolt (obsolete) flange pattern. 1962-66 poly “A” motor crankshafts used the same conventional (modern) threaded 6-bolt flange as the LA and B/RB engines.
More importantly, the 1955-61 flange for the 1956-61 A-466 iron Torqueflite protrudes farther out of the block than the 1962-* flanges. This precludes direct use of a later transmission or bellhousing, as the crankshaft is too long, and a 1962-* A-727 aluminum Torqueflite bellhousing will be short of the correct position and require an adapter.
318" poli build.
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