[iluv69s]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: napa68</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: firstgenaddict</div><div class="ubbcode-body">Unbelievable what pops up on this site... wow wow wow.
Few people even realize the 63 GS had a 377 cui all aluminum small block with huge side draft webbers...
Is there not a 0 (zero) part number anywhere on it? </div></div>

No, nothing. ?????????? </div></div>

curiously, the GS heads have a part munber, but do not have a 0- part number...maybe that system started later?? the earliest o- part ive seen was 1965...not that there are not any earlier