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Old 12-22-2010, 09:41 AM   #76
dieseleagle
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Default Re: IHC Vehicle Distributor Identification

Thanks for the response. The numbers on the distributor housing are: 7a3, folowed by: 359210-691
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Old 12-22-2010, 10:21 AM   #77
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Default Re: IHC Vehicle Distributor Identification

Your distributor part number does not appear in the references, so double check it. I know they are hard to read, the last three digits should actually be "c91".

I've attached a typical distributor spec page from the appropriate service manual. You can see that most all part numbers have common specs, with a few variations. Advance curves are specific to each engine application however.

Keep in mind, all these specs are taken from a distributor machine, the rpm data points are for distributor rpm, not engine rpm! So the rpm callout is doubled for actual operational engine rpm.
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File Type: pdf Early Holley 1510 Distributor Spec.PDF (1.45 MB, 783 views)
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Old 12-22-2010, 11:39 AM   #78
dieseleagle
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Default Re: IHC Vehicle Distributor Identification

I got out a magnifying glass and you are correct as to the last three digits - it is indeed c91. A scratch made the c look like a 6. The first six are very clear and they are 359210.
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Old 12-22-2010, 04:08 PM   #79
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Default Re: IHC Vehicle Distributor Identification

The 359210c91 doesn't appear in the price list of that era either.

Many of the transmission, carburetor, and distributor part numbers were divided into two groups of numbers, the parts that went to the assembly line carried a different number than the parts used as "service part replacement". The oem numbers aren't in the price list, though they do usually appear in the service manual specifications.

No matter really in your case, all the info you need is in that attachment.
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Old 12-22-2010, 10:53 PM   #80
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Default Re: IHC Vehicle Distributor Identification

So, when I order the replacement I'll want the curved point 7 degree version and the correct pertronix unit will be a 1481?
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Old 12-23-2010, 09:33 AM   #81
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Default Re: IHC Vehicle Distributor Identification

Quote:
Originally Posted by dieseleagle View Post
so, when I order the replacement I'll want the curved point 7 degree version and the correct pertronix unit will be a 1481?
Correct on both points!
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Old 02-18-2011, 12:19 PM   #82
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Default Re: IHC Vehicle Distributor Identification

Quote:
Originally Posted by michael mayben View Post
next up we have a Holley "gold box" electronic distributor system (IH model 1530 designation).

The gold box label can be a misnomer...depending upon which IH platform these units were installed in, the electronic module could also be either silver or black in color.

The distributor body, shaft, and mechanical advance is essentially the same items as used in the Holley breaker point distributors (cast aluminum body). However, a "reluctor" is present in the electronic distributor which takes the place of the breaker cam component in the points unit.

There were many different part number distributors used throughout all IH applications, the differences are in the mechanical advance curve, and in the vacuum advance canister calibration.

this design is referred to as a "hall effect" trigger and that trigger must be used in conjunction with the properly matched electronic module, the hall effect sensor in the Holley unit will not trigger an aftermarket ignition box such as a mallory 6 series, msd 6 series, etc.
Regarding the distributor in the pic, the vacuum can is dead...a common fault regarding Holley distributors as found on IH stuff in general. New cans are not available any longer, however, a few companies do "rebuild" non-func vacuum cans routinely.

The electronic module is currently available as a new replacement as well as the trigger/sensor.

This is an edit to correct the air gap spec previously posted:

if the trigger is ever removed from the body for either cleaning or replacement, then the "reluctor air gap" must be set using a non-magnetic thickness gauge, that spec is 0.008" +/- 0.002".
What do I need to get my Holley "gold box" dizzy to work with my msd 6-btm? Maybe p-tron?

Also when I hooked up the gold box back up to the distributor it wouldn't work, can't figure out whats wrong with it.
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Old 02-18-2011, 09:45 PM   #83
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Default Re: IHC Vehicle Distributor Identification

I personally would not attempt to fire any cd ignition box from a gold box distributor though it can be done.

If...you suspect the actual gold box to now be bad, simply dump it and install a pertronix I inside the distributor itself and use it alone to trigger the msd unit and coil.

The proper pertronix p/n to use for this is ho-181.
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Old 02-18-2011, 09:53 PM   #84
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Default Re: IHC Vehicle Distributor Identification

That was my guess, I rebuilt my 304 and I gave the msd 6-btm due to the fact that I'm turbo charging it.

I have a prestolite that is electronically triggered and I had read a post that said you could just hookup straight to the small red and white wire, but for some reason I couldn't get it to work.

So I just hooked it up regularly and got to hear it run for the first time, it sounded great.
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Old 07-30-2011, 10:27 PM   #85
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Default Re: IHC Vehicle Distributor Identification

Can anyone identify my dist ? It came with my 72 304 motor ... It has the IH logo on the case . I need to get the correct cap for it .
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Old 07-31-2011, 05:38 AM   #86
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Default Re: IHC Vehicle Distributor Identification

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Originally Posted by mojave450rider View Post
can anyone identify my dist ? It came with my 72 304 motor ... It has the IH logo on the case . I need to get the correct cap for it .
Go to the 1st page an read the threads,it'll tell you which dizzy u have.Jeff
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Old 07-31-2011, 07:54 AM   #87
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Default Re: IHC Vehicle Distributor Identification

Gunna have to say it's a Holley that has been converted to a pertronix. If you can read the pertronix number you can cross it to the distributer model.
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Old 07-31-2011, 09:39 AM   #88
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Default Re: IHC Vehicle Distributor Identification

Quote:
Originally Posted by mojave450rider View Post
can anyone identify my dist ? It came with my 72 304 motor ... It has the IH logo on the case . I need to get the correct cap for it .
The distributor in your pics is a IH/Holley unit that was originally equipped with "curved" breaker points. However, it has had a pertronix #1481 conversion kit installed that eliminates the points and condenser unit.

The coded numbers that are on the labels on the actual module really don't mean anything to the consumer, those are production codes used in the actual manufacturing process and don't refer to the actual pertronix part number for the conversion kit.
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Old 07-31-2011, 11:36 AM   #89
mojave450rider
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Default Re: IHC Vehicle Distributor Identification

Sooo...um im gona need to get a Holley distributor cap ? Am I understanding correctly ? Thank u guys !
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Old 08-15-2011, 10:25 AM   #90
mojave450rider
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Default Re: IHC Vehicle Distributor Identification

The dist has the IH logo followed by code 251 with 25 stamped in next to it then below it it has 427908-c91. So from what im getting its a Holley. Does it matter on the cap I need or are the Holley caps all the same?
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