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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Everyone should be aware this cam is ground on an original TR cam core, not a new blank. Ken<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Fot <fot-bounces@autox.team.net> <b>On Behalf Of </b>Tony and Annie Garmey via Fot<br><b>Sent:</b> Sunday, January 22, 2023 3:24 PM<br><b>To:</b> Tony Drews <tony@tonydrews.com><br><b>Cc:</b> fot@autox.team.net<br><b>Subject:</b> Re: [Fot] A cam for Rick<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The Larry young DX cam profile is available at Webb Camshaft, Riverside Ca. <o:p></o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'>I’ve used this profile with a lot of success for multiple clients . <o:p></o:p></p><div><p class=MsoNormal>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'>On Jan 22, 2023, at 2:58 PM, Tony Drews via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote:<o:p></o:p></p></blockquote></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal> <o:p></o:p></p><p>I was going to keep out of this one but am not capable of it. :)<o:p></o:p></p><p>I run Larry's original design cams. I'm not quite sure who is making them now - Ken Knight had some made last go-round. It's fast but not as peaky as the Erson 24 - coming out of a turn at 3000 rpm is fine, 3500 is better, pulls through 6500 RPM, not sure where it drops off - haven't had the courage to rev that high.<o:p></o:p></p><p>Most of the front runners (to my knowledge at least) run the Erson 24. I ran a modified one of those (experimental) and hated that one because it was even worse at low RPM than the Erson.<o:p></o:p></p><p>We ran an Isky 666 cam early on and it might be more suitable for a less highly stressed engine. It was tractable and pulled through 6000, not sure about higher - I suspect going over 6000 won't be worth it. With a built engine, ported head, all the goodies it's not as fast / powerful as the Larry or Erson ones.<o:p></o:p></p><p>The Isky would be easier on the valve train. Larry's profile requires full diameter stock lifters - if you've gone with the GT40 lifters sleeved down it'll wipe the cam. One set of lifters I bought from BPNW they had put a chamfer around the edge to break the sharp edge and that was enough to wipe a cam too. It's pretty high lift so you need to have your ducks in a row for there not to be spring bind, have the seat pressures right, and consider valves and springs a replaceable wear item. I suspect the same is true for the Erson 24 grind as well. I believe there's an Erson 23 grind which is less radical that might be an option.<o:p></o:p></p><p>I'm trying to point out possible "off the shelf" items that don't require you to send a profile to a cam grinder...<o:p></o:p></p><p>The Erson ones are hopefully still available from Brian Howlett / BFE / <a href="http://www.BritishFrameandEngine.com">www.BritishFrameandEngine.com</a>. Not sure who's making the Larry Young design ones now.<o:p></o:p></p><p>Cheers, Tony Drews<o:p></o:p></p><div><p class=MsoNormal>On 1/22/2023 11:30 AM, Larry Young via Fot wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>The numbers for Erson/BFE #24 mentioned by David and Henry is the last one in my list and has the longest duration. Like Henry said, if you drop below 4,000 your dead.<br><br>I got interested in the history of cam design. According the Speedy Bill Smith (Speedway Motors) the real innovators after WWII were Ed Winfield and Collins of Harmon-Collins (see the book "Souping the Stock Engine). He said their designs were heavily copied by the others. I think Kas's cams were designed by someone from Harmon-Collins.<br><br>I certainly don't have the experience of many others on this list, but I'll contribute a few comments on what Rick has said. Cams is a subject that is mysterious (Rick said "black art") to many, so it is easy for them to be fooled. There is nothing mysterious about it. I agree that most people put to much emphasis on peak HP rather than the entire range you will operate in.<br> - Larry <br><br><br>On 1/22/2023 6:46 AM, David Gott via Fot wrote:<br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Hi FOT, <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I used Larry Young’s site to learn a lot about cams and their relative effects on engine performance with some crude engine modeling software, in the quest to pick the right cam for my wants, building a strong mid range engine, trying not to spin over 6,000 if I can help it with a stock based crank. Does anyone happen to have the specs on the Gillander’s #24 they could share? Just curious. Maybe it’s at the pointy end of the list below?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Rick McCurdy, here’s the cam reference list Larry put together, below, and I’d sure be curious what Rick Parent’s software would say I should have done!!! <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="https://www.tildentechnologies.com/Cams/TriumphCams.html" target="_blank">Triumph Cams</a> <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal><o:p> </o:p></p></blockquote><p class=MsoNormal><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre><a href="mailto:fot@autox.team.net">fot@autox.team.net</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre><a href="http://www.fot-racing.com">http://www.fot-racing.com</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Donate: <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><o:p></o:p></pre><pre>Archive: <a href="http://autox.team.net/archive">http://autox.team.net/archive</a> <a href="http://www.team.net/pipermail/fot">http://www.team.net/pipermail/fot</a><o:p></o:p></pre><pre>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/tony@tonydrews.com">http://autox.team.net/mailman/options/fot/tony@tonydrews.com</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre></blockquote><p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br><a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br><br><a href="http://www.fot-racing.com">http://www.fot-racing.com</a><br><br>Donate: <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>Archive: <a href="http://autox.team.net/archive">http://autox.team.net/archive</a> <a href="http://www.team.net/pipermail/fot">http://www.team.net/pipermail/fot</a><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/horizonracing@msn.com">http://autox.team.net/mailman/options/fot/horizonracing@msn.com</a><br><br><o:p></o:p></p></div></blockquote></div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br /><table style="border-top: 1px solid #D3D4DE;"><tr><td style="width: 55px; padding-top: 13px;"><a href="http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank"><img src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-green-avg-v1.png" alt="" width="46" height="29" style="width: 46px; height: 29px;"/></a></td><td style="width: 470px; padding-top: 12px; color: #41424e; font-size: 13px; font-family: Arial, Helvetica, sans-serif; line-height: 18px;">Virus-free.<a href="http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank" style="color: #4453ea;">www.avg.com</a></td></tr></table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"> </a></div></body></html>