<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">When I replied, I only sent to Chris Dimmock.<div><br></div><div>The first cam on the left is the earliest cam. It has a different oil pump drive gear. It won't work with most healeys as the gear will not mesh with a gear with more teeth.</div><div><br></div><div>Wilko</div><div><br><div><div>On Feb 8, 2016, at 6:01 PM, richard mayor wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">After many years of racing I became aware of the rings on the cams and I made a few notes from time to time. After reviewing my notes I hope I can shed some light. <br>In the photo that I see, the cams are placed from left to right - not top to bottom. Starting with the far left cam - the one with no rings - I believe to be a very late 3000 cam. This one should have a part # stamped on the end. (I once saw a BJ7 cam with no rings and it had part #12B594 stamped on the end). The next two cams have a single ring and I believe these are early 3000 cams. The 4th cam with a 2 rings is a 100-6 cam. The 5th cam on the far right is not clear, it appears to have 3 grooves ... if that makes it a 2 ring cam then it is also a 100-6 cam.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 8, 2016 at 3:16 AM, Chris Dimmock <span dir="ltr"><<a href="mailto:austin.healey@gmail.com" target="_blank">austin.healey@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; position: static; z-index: auto; ">And here's a picture.<br>
Pic the wrong one out.<br>
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Sent from my iPhone<br>
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> On 8 Feb 2016, at 10:07 PM, Chris Dimmock <<a href="mailto:austin.healey@gmail.com">austin.healey@gmail.com</a>> wrote:<br>
><br>
> Andy.<br>
> There are 2 gear drives on a camshaft.<br>
> One for the distributor.<br>
> One for the oil pump.<br>
> The drive for the distributor was always the same number of teeth.<br>
> Always on a C series engine. Same same same.<br>
> Oil pump? That's different.<br>
> Same size gear for both?<br>
> No. Smaller? That's early<br>
> Bigger gear for oil pump?<br>
> That's later. Bigger gear.<br>
> That's the one I'll be using.<br>
> Your pic tells me nothing<br></blockquote></div></div></blockquote></div><br></div></body></html>