TR7 Fan Posted May 6, 2020 Share Posted May 6, 2020 Hello, Anyone who knows the difference between cylinderheads with these numbers on the front : 2B/3B/4B ? Regards, Luke. Quote Link to comment Share on other sites More sharing options...
Gt6s Posted May 7, 2020 Share Posted May 7, 2020 Foundry markings only Quote Link to comment Share on other sites More sharing options...
TR7 Fan Posted May 10, 2020 Author Share Posted May 10, 2020 Thanks for the answer.. As I understand it could refer to the mould the were made from, am I right? Regards, Luke. Quote Link to comment Share on other sites More sharing options...
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