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Hemi solid roller camshaft with iron gear #2562926
10/12/18 03:02 PM
10/12/18 03:02 PM
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West Palm Beach, Florida
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Craig J Offline OP
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Any suggestions on who can sell me a solid roller cam for a gen 2 hemi with an iron gear pressed onto the end of the billet core? This is a fairly common option for big block chevy, but apparently not for a hemi?

Thanks
Craig

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2562932
10/12/18 03:08 PM
10/12/18 03:08 PM
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Bend,OR USA
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Are you wanting a steel solid roller cam with a iron oil pump drive on it?
If so probably not available, not that I know of, yet for us Mopar BB racers whiney
I buy and use the Milidon brand bronze oil pump drives for my solid roller cam motors, they offer three different lengths depending on the oil pump used scope


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2562950
10/12/18 03:35 PM
10/12/18 03:35 PM
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madscientist Offline
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There are only 2 or 3 companies making cam cores.

You may try Cam Motion and see if they have the cores. If not, they may be able to tell you if they are even made.

I mean, not to be rude but how many hemi guys need what you are asking for? I've been asking for 7-4 swap cam cores for both SBM and BBM since I can't remember when and when I get tired of the laughing on the other end of the phone I just hang up. I haven't asked for that since about 2014 so they may be available now.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: Hemi solid roller camshaft with iron gear [Re: madscientist] #2563012
10/12/18 05:20 PM
10/12/18 05:20 PM
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West Palm Beach, Florida
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Craig J Offline OP
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Originally Posted By madscientist


I mean, not to be rude but how many hemi guys need what you are asking for?


How do you prevent distributor gear wear on a steel billet solid roller camshaft?

On my 14-71 blown big block chevy the MSD "brass" distributor gear wore out in about a thousand miles running on a fairly mild howards solid roller cam. Next I tried the "melonized" gear, it also started wearing after about 1k miles, next I tried the "plastic" one that comp cams claimed would work, but it only lasted about 1500 miles before 1/2 of each tooth was worn off and had significant spark scatter. I then installed a Crower billet roller cam with a cast iron gear pressed on and after 10K miles the stock GM distributor gear looked basically like new.




Last edited by Craig J; 10/12/18 05:22 PM.
Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2563025
10/12/18 05:53 PM
10/12/18 05:53 PM
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I understand the problem you are having. The issue is getting a core. That's going to be a problem.

Like I said...you can call Cam Motion and see what they have, or if they can tell you has that core, or if one is even made.

There is also Barton, and Tim Banning at FHO who may be able to help.

I totally get what you want. The getting part is going to be an issue.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: Hemi solid roller camshaft with iron gear [Re: madscientist] #2563030
10/12/18 06:00 PM
10/12/18 06:00 PM
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Wichita
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Use Crane 66970 for your pump drive gear on a roller cam. I have well over 5,000 miles of street/strip use on one with zero wear.

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2563049
10/12/18 07:09 PM
10/12/18 07:09 PM
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Take look at the size of the Chevy gear and then look at the Mopar gear size work
Another outstanding engineering job by Mopar engine designers up
I ran the same Milidon bronze gear on my old pump gas Duster that had hundreds of runs and over 3000 street miles on it with no ignition timing movement at all shruggy
IHTHs


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2563238
10/13/18 03:57 AM
10/13/18 03:57 AM
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I don’t know if Crane Cams has an iron gear option on the big block HEMI cams, but they do for the small block cams.

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2563310
10/13/18 11:37 AM
10/13/18 11:37 AM
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It's a good idea to try and polish up the drive gear on the solid roller cams before you use then, If they are poorly machined they will wear out the intermediate shaft gear quickly.

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2563360
10/13/18 01:02 PM
10/13/18 01:02 PM
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Great Neck,LI,new york
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I prefer the bronze gear to be the part that wears! When it gets too loose a new one can be dropped in without disturbing the cam.


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2564297
10/15/18 10:41 AM
10/15/18 10:41 AM
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Marion, South Carolina [><]
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Never really had a problem w/ mine after 10+ years and a bunch of street time. Replaced it when I freshened it up about 5 years ago. Sure lasts a lot longer than 1k miles.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
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'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
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Re: Hemi solid roller camshaft with iron gear [Re: an8sec70cuda] #2564465
10/15/18 04:33 PM
10/15/18 04:33 PM
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Last time I checked (not w/in the last few years), NOBODY offered a cast-iron gear option for a billet BBM / Gen II Hemi cam.

I'm also surprised at the wide range of lifespans people running the traditional bronze gear experience. Dwayne posted pics on SpeedTalk that showed some pretty severe wear that he thinks could be the result of the teeth on the cam gears not being beveled today as well as they used to be. At least, I believe that's his hypothesis.

One of the things to inspect while I'm addressing the oil leaks that turned up on the dyno is the distributor drive gear wear. I've got either an MP or a Milodon bronze gear & shaft assembly and a collar restricting the vertical play between the distributor shaft and the oil pump drive. Depending upon how that looks, I may pull the cam and try to bevel its teeth slightly.

From some of the comments others posted about trying the melonized steel or poly(?) gears, my thought is if the cam gear / oil pump drive gear interface is "iffy" for whatever reason, it's not going to matter what type of material the drive gear is.

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2564688
10/16/18 01:00 AM
10/16/18 01:00 AM
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FWIW I just saw an advertisement is a comic book where Hughes says he has a gear like the OP is wanting.

It may be worth the OP looking into that gear.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2564796
10/16/18 12:48 PM
10/16/18 12:48 PM
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I changed my worn bronze gear out to the Hughes Hug 6213 $169.
It's the crane gear 66970 with shaft installed. I installed it on a used cam with a M63hv pump that had a high pressure spring in it. Everything they tell you not to do. Lol I pulled it out after 1 year to check it and it and the cam looked perfect.

I did have to emery cloth the shaft to get it to spin freely in my bushing.

I also put a collar on my MSD.

Here's a thought on why some wear worse than others. When I was using a Mopar distributor and I ran the valves the bronze gear looked great. Then after I changed to the MSD the gear was worn when I checked it. I didn't have a collar on either of them. So I wonder if the shaft on the Mopar was maybe a little longer and kept the gear from climbing up? Of course I didn't think of this until months after everything was done. Lol Mike

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2564880
10/16/18 03:26 PM
10/16/18 03:26 PM
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Pattison Texas
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I am running the Hughes shaft & gear in mine, at 2000 miles I checked it & it was not worn, I also do run the collar on the dist, HV oil pump & adjustable valve, 10/30 oil 65psi max hot,idle 25psi


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512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
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Re: Hemi solid roller camshaft with iron gear [Re: madscientist] #2564920
10/16/18 04:30 PM
10/16/18 04:30 PM
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Originally Posted By madscientist
FWIW I just saw an advertisement is a comic book where Hughes says he has a gear like the OP is wanting.

It may be worth the OP looking into that gear.

Hughes offers the Crane melonized oil pump drive gear mounted on a new shaft, not a camshaft option for a cast iron cam gear.

Re: Hemi solid roller camshaft with iron gear [Re: BradH] #2564922
10/16/18 04:31 PM
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Originally Posted By BradH
Originally Posted By madscientist
FWIW I just saw an advertisement is a comic book where Hughes says he has a gear like the OP is wanting.

It may be worth the OP looking into that gear.

Hughes offers the Crane melonized oil pump drive gear mounted on a new shaft, not a camshaft option for a cast iron cam gear.


I get that, but isn't that gear supposed to be good for any cam gear?


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: Hemi solid roller camshaft with iron gear [Re: second 70] #2564924
10/16/18 04:32 PM
10/16/18 04:32 PM
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Originally Posted By second 70
I changed my worn bronze gear out to the Hughes Hug 6213 $169.
It's the crane gear 66970 with shaft installed. I installed it on a used cam with a M63hv pump that had a high pressure spring in it. Everything they tell you not to do. Lol I pulled it out after 1 year to check it and it and the cam looked perfect.

Yep, basically everything they say NOT to do... laugh2

Re: Hemi solid roller camshaft with iron gear [Re: Craig J] #2564927
10/16/18 04:33 PM
10/16/18 04:33 PM
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It seems to me someone with a lathe and the right combination of skill and courage could probably create one, similar to how Crane made the 2-piece small block cores that were used in MP crate engines.

I think it might be a problem to get a person who is inve$ting all that is required in a Hemi to accept the 2 piece design held together with a roll pin, though.

It could be done.
I don't think I would want it in that caliber of an engine, though.


Rich H.

Esse Quam Videri




Re: Hemi solid roller camshaft with iron gear [Re: madscientist] #2564930
10/16/18 04:36 PM
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Originally Posted By madscientist
Originally Posted By BradH
Originally Posted By madscientist
FWIW I just saw an advertisement is a comic book where Hughes says he has a gear like the OP is wanting.

It may be worth the OP looking into that gear.

Hughes offers the Crane melonized oil pump drive gear mounted on a new shaft, not a camshaft option for a cast iron cam gear.


I get that, but isn't that gear supposed to be good for any cam gear?


Yes, yet at least one person above mentioned that even that type of gear wore excessively in their application. That goes back to my comment that I don't think any gear will hold up if there's something jacked up with the cam gear / oil pump drive gear interface.

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