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 9Likes
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Post By blykins
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Post By blykins
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Post By blykins
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Post By spdbrake
08-30-2019, 01:23 PM
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CC Member
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Join Date: Dec 2012
Cobra Make, Engine:
Posts: 6
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Distributor Gear
I have been reading steel with steel and iron with iron but what gear do you run with Austempered Ductile Iron Comp HR Cam? I think steel but would like to confirm. Thx. Scott
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09-09-2019, 10:42 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,391
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Quote:
Originally Posted by Johnnybgoode
I have been reading steel with steel and iron with iron but what gear do you run with Austempered Ductile Iron Comp HR Cam? I think steel but would like to confirm. Thx. Scott
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Iron!
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www.lykinsmotorsports.com
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09-11-2019, 07:02 AM
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CC Member
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Join Date: Feb 2018
Location: Lodi,
CA
Cobra Make, Engine: 427 manowar forged crank roller rockers . BIG CAM.
Posts: 784
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Watch out Johnnybgood! This is one question you do not ask on this forum.They are going to tar and feather you and when they are done they will throw you in a pot of boiling water.
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09-11-2019, 07:12 AM
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Join Date: Dec 2001
Location: Louisville,
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Cobra Make, Engine: I'm Cobra-less!
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Quote:
Originally Posted by hauss
Watch out Johnnybgood! This is one question you do not ask on this forum.They are going to tar and feather you and when they are done they will throw you in a pot of boiling water.
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As it should be when people are too stubborn for their own good.
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www.lykinsmotorsports.com
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09-11-2019, 12:58 PM
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Quote:
Originally Posted by blykins
Iron!
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Thanks Brent appreciate your advice. I called Comp earlier and they said steel but the guy did not sound that sure. I called back today and the fellow I spoke to said iron as you have and when I read the description of the dist. gear on the current Crane Pro Billet I've been running it sounds like it is iron as well. It's very confusing so I appreciate your help.
The Crane dist. module is bad and they no longer supply parts so hence the reason I'm looking for a new dist. Do you have any recommendations? I was looking at Pertronix but they only seem to come with steel gears. I have also found an MSD #8578 which looks like it should work with my cam and Crane Hi6 ignition/coil. Motor is a 74 351W block with a 408 kit in it, 10-1. Performer RPM heads and intake (nicely ported). Cam is Comp XR282RF-HR10 Part # 35-425-8.
Any other suggestions/comments are welcome. Thanks for the help. Scott |
09-11-2019, 01:13 PM
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Join Date: Dec 2001
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I'm an MSD guy myself....
That 8578 should work great. Easily recurvable too, and I'd suggest that you do it. The curves are lazy out of the box.
Club Cobra is hit or miss for me to login to with the constant forum issues, so if you need something, email me. brent@lykinsmotorsports.com
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www.lykinsmotorsports.com
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09-11-2019, 03:27 PM
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Quote:
Originally Posted by blykins
I'm an MSD guy myself....
That 8578 should work great. Easily recurvable too, and I'd suggest that you do it. The curves are lazy out of the box.
Club Cobra is hit or miss for me to login to with the constant forum issues, so if you need something, email me. brent@lykinsmotorsports.com |
Hi Brent. Thank you very much. Think I will go with the MSD. I will contact you directly for further questions.
Thx. Scott |
09-11-2019, 05:16 PM
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Join Date: Feb 2018
Location: Lodi,
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Cobra Make, Engine: 427 manowar forged crank roller rockers . BIG CAM.
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See what I mean.
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09-12-2019, 04:01 AM
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Quote:
Originally Posted by hauss
See what I mean.
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No, I don't see what you mean.
We have knowledgeable guys on here who care about sharing the correct information. Obviously you can't count on manufacturers to provide it.
I'm sorry your bronze distributor is wearing. I'm also sorry that you were stubborn enough to not acknowledge it (after posting pictures showing a horribly worn gear and saying "It looks fine!") and then ignore all the correct information that was given to you.
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09-12-2019, 07:21 AM
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Join Date: Feb 2018
Location: Lodi,
CA
Cobra Make, Engine: 427 manowar forged crank roller rockers . BIG CAM.
Posts: 784
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Dude lay off the coffee I think it is starting to get to you just a little.
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09-22-2019, 07:49 AM
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09-23-2019, 05:12 AM
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Join Date: Dec 2001
Location: Louisville,
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Quote:
Originally Posted by spdbrake
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They don't last like a steel gear.
Steel cam = steel gear.
Iron cam = iron gear.
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09-23-2019, 12:01 PM
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Join Date: Feb 2014
Location: White City,
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Cobra Make, Engine: West Coast, 460 CID
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Quote:
Originally Posted by spdbrake
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From the Comp Cams PDF: "As opposed to bronze gears, melonized versions are less wear-prone and feature better timing accuracy and higher strength than any other universally compatible distributor gear option. The greater wear resistance and higher precision of COMP CamsŪ Melonized Gears also provide less spark scatter (more accurate timing) than is possible with a bronze gear."
You'll note they're comparing their Melonized gears to to universal and bronze gear options - not to iron and steel options. If Comp Cams believed Melonized gears were better than iron on iron and steel on steel, don't you think they'd make that clear? I believe they know full well Melonized is NOT better than properly matching iron gears to iron camshafts, and steel gears to steel camshafts.
Accept or reject expert opinion from engine builders like Brent but, as always, "your mileage may vary" (literally and figuratively).
You can read more about Melonizing here: https://en.wikipedia.org/wiki/Ferritic_nitrocarburizing
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Brian
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12-08-2019, 03:36 PM
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Location: Shelby,
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Cobra Make, Engine: acc
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just me
I run a mechanical roller in a 408w. Bronze gear didn;t last any time. Switch to a comp cams composite gear. Have over 3 years and no problems. Just my 2 cents
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