racertb Posted August 9, 2012 Share Posted August 9, 2012 All:No, I'm not talking about women ( ), but who can give me information on the "Red Head" high compression head for early Plymouths? I have a '29 U Roadster and apparently the red head was a high compression head "option" was supposedly standard on the roadsters...Has anybody seen one? Had one? Is the head painted red as opposed to silver for the silver dome?Just curious to know if this really existed... Link to comment Share on other sites More sharing options...
ply33 Posted August 9, 2012 Share Posted August 9, 2012 I think the first year for a high compression head option was '32 on the PB. The PB engine is quite different than your U with a water pump so it is not clear to me that the heads would swap with your car. For '33/'34 the optional cast iron high compression head was painted red. If you had the optional high compression aluminum head, it was "as cast" natural color. Link to comment Share on other sites More sharing options...
broker-len Posted August 10, 2012 Share Posted August 10, 2012 your 29 plymouth is thrmo syphin----------------no water pump,,,the head is slanted tward the thrmo housing the red head may not have this design,,,,,,,,,,,,,,,,,may over heat,,,,,also with higher commpression you may also carse over heating Link to comment Share on other sites More sharing options...
racertb Posted August 10, 2012 Author Share Posted August 10, 2012 It's starting to look like I read the parts manual wrong...I will look again on how it's worded and why I thought the red head came on the earlier Plymouths... Link to comment Share on other sites More sharing options...
broker-len Posted August 10, 2012 Share Posted August 10, 2012 can I ask you a question--??------------------why do you need more power in a old plymouth ? Link to comment Share on other sites More sharing options...
keiser31 Posted August 11, 2012 Share Posted August 11, 2012 can I ask you a question--??------------------why do you need more power in a old plymouth ?He didn't say he needed more power, did he? Link to comment Share on other sites More sharing options...
racertb Posted August 11, 2012 Author Share Posted August 11, 2012 No, not looking for more power...I think I just mis-read something in the Plymouth Master Parts List book... Link to comment Share on other sites More sharing options...
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