by 1972nail » Fri Aug 03, 2018 10:12 pm
They look similar but the HC can come in at least 2 different types. The early one has the same bolt hole sizes as the earlier 1159 engine but the E Coupe should have the later type with the bigger head bolts.
The part number looks like it is a very old one as most late HC ones start with 9
I'm sure that someone with more knowledge of the OHV engine than me will add to this.
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