Chris Craft/OMC model number cross reference
Iím having trouble sourcing parts, thanks in advance for any help. I have a 1975 Chris Craft 17í Lancer. On the engine valve cover it says Chris Craft Model 307B101, which I believe is 215HP. Googling that for parts has returned very little. It is an OMC sterndrive and Iím assuming a Chevy 307. Did Chris Craft re-brand an OMC stern drive package? Is there an OMC model I should be using to source parts, something like TUFM-19EX-20D or TUFR-19EX-20D? I have found both in an old OMC parts catalog the previous owner gave me.
The OMC ownerís manual that came with the boat states the spark plugs should be AC-CR43K or Champion J6. A separate document that came with the boat and names the engine model number states AC MR43T. These plugs have a different reach, tip, and seat. I canít validate which document is correct. In the OMC parts catalog, for the OMC models above, it calls out all 3 as valid spark plugs. Only the AC CR43k and J6 are for a 215 EX model only and the AC R43T is for 215 20D models only. Any ideas or are there additional markings on the boat that would help? I donít know what the EX or 20D are.
Also, I have a small oil leak, which Iím having trouble finding parts. Can I source Chevy 307 intake and valve cover gaskets?