Quote:
Originally Posted by scicala
'55 and '56 heads had the same sized ports. '57 is when the intake ports got larger in the heads and intake. The ECZ-B '57 intake will still work on a '55 and '56 head. The '54 heads are the ones that are with extra small ports and will not work.
Sal
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Knew someone had the exact info on this. Although it will bolt on, you will have a port mis-match with the 55 heads..