<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: William</div><div class="ubbcode-body">
396/427 all - no extension. Serviced for many years by GM; was the later unit with the stamped bead in the bottom. Later reproduced. Common and still available.</div></div>
Didn't ONLY the ZL-1's have a completely symmetrical metal ring flange too,because no ZL-1 came with AC?
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">'71 - '72 Chevelles are somewhat different I believe.</div></div>
True,these have the unique heat stove/thermac pot on the snorkel.