[242177P]

Originally Posted by PAUL K

Any first hand, or factual second stories about SD 455 rods breaking? Any details about the incident?

Aren't there preferred letter codes? I was under the impression
they were several different batches of SD455 rods, some better
than others.

[PAUL K]

Originally Posted by 242177P

Aren't there preferred letter codes? I was under the impression
they were several different batches of SD455 rods, some better
than others.

That's a good question. The later series are nicer looking forgings but I'm thinking the earlier units passed Pontiac's QC test also.