HEI Distributor - JeepForum.com
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post #1 of 7 Old 09-19-2021, 01:00 PM Thread Starter
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HEI Distributor

Good afternoon,

I purchased a 1989 Jeep Wrangler (YJ) some time ago and the seller gave me a few parts he was going to install but just never got to it. One of those items is the HEI distributor. The distributor is from A-Team Performance Parts; sku: HEI011R-SPW001R-170072; sorry that I cannot post links (the system won't let me; I'm a noob).

My question lies on the distributor gear material; the item referenced above states that the gear is made from chrome-moly. There have been some reports of the distributor gear eating up the camshaft gear. Does anyone know if chrome-moly is one of those metals that eats the camshaft? If it does eat it, do you know if the gear from the old distributor can be used with the HEI where they can be swapped out (hoping for plug-and-play)?

Thanks in advance.

1 + 1 is not always 11.
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post #2 of 7 Old 09-20-2021, 05:51 AM
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1989 YJ Wrangler 
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Location: Morrisville
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Astute to pay attention to that

The cam is a somewhat hard alloy. Steel/iron whatever cams are general cast sometimes forged. The alloy is specific to the lifter composition and thereby the gear is of different composition depending.

Chrome-moly however can have a range of hardness depending on other factors- usually an alloy for ‘high strength steel’ that can be stiff and brittle. Used for race car frame tubes and body sheet metal where less weight per strength ratio is wanted.

I don’t know but I would not use that gear.
Others may know for sure -I don’t. But I did look for an article I couldn’t find but this covers the same thing: https://www.enginebuildermag.com/200...tributor-gear/ just not jeep specific.

[size=3]Shackles & D-rings are different things.
Cranking IS turning over
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post #3 of 7 Old 09-20-2021, 07:57 PM
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1990 YJ Wrangler 
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Location: Grass Valley
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There are some AMC applications that you can get the gear for that will work on those. I called CRT Performance and ordered the gear from them. They have literally thousands of their units running in Jeeps with no issue.

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post #4 of 7 Old 09-21-2021, 05:04 AM Thread Starter
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Thank you.
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post #5 of 7 Old 09-21-2021, 05:08 AM Thread Starter
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1 + 1 is not always 11.
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post #6 of 7 Old 09-21-2021, 06:02 AM
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1995 YJ Wrangler 
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AMC 304 V-8 is the easiest swap out. The 258 gear is wrong ID for HEI shaft and will be slightly loose even when pinned-on.

MSD also makes a good gear. #8005 I think???

I've been running an iron MSD and AMC 304 gear from Summit Racing for about 15 years total...(two motors).
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post #7 of 7 Old 09-22-2021, 04:19 PM Thread Starter
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1 + 1 is not always 11.
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