Quote:
Originally Posted by SSDiv6
The LD4B Edelbrock intake was approved as a replacement for the 273 due to the fact it was available with a Chrysler part number. The same rationale used on the 440 Chrysler 6-Pack engine with the Edelbrock intake. The 6-Pack intake was available in both aluminum and cast iron.
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the amc r4b had the amc part number as well,, am 4485729,,