B442adams Posted March 20, 2019 Share Posted March 20, 2019 I have a 28 coupe. My question is, what are the physical differences in olds flathead 6s from the 20s to the 40s era... if i decide to swap out my original motor to preserve it, will 215, 230, 238 etc be a direct bolt in or are there major differences between them? Thanks Link to comment Share on other sites More sharing options...
rocketraider Posted March 24, 2019 Share Posted March 24, 2019 I have no experience with these engines, but the folks in National Antique Olds Club will know. www.antiqueolds.org and look thru the prewar advisors list. Link to comment Share on other sites More sharing options...
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