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Re: Driving an HEI Module with other signals



Yep--that's the one--80 through 1985 C and K series trucks with
a 305 we're a popular home of those.

-----Original Message-----
From: Peter Gargano <peter@ntserver.techedge.com.au>
To: gmecm@diy-efi.org <gmecm@diy-efi.org>
Date: April 3, 2000 3:27 PM
Subject: Re: Driving an HEI Module with other signals


>I take it you're refering to a 7 pin module as fig 3 in:
>
> ftp://ftp.diy-efi.org/incoming/7PIN_SCH.GIF
>
>Programmer wrote:
>>
>> 1. Just one little warning about that 7 pin module, if you run anything
>> above stock compression and you have a knock sensor failure, it'll
>> advance timing to the point of no return.
>
>Is this because the module has built-in advance, and without an EST signal
>this built-in advance is too wild for high compression motors?
>
>> 2. The pattern from a GM pickup will always look more sawtoothed than an
AC
>> pattern.
>> 3. If you're going to run anything above 5500 RPM, I'd look into someone
>> elses HEI module.
>
>This is 5500 RPM with a V8? (= 7,333RPM on 6 cyl, or 11,000 on a 4
cylinder)?
>What happens above 5,500RPM?
>Does this also apply to the 8 pin module (fig 4 in above GIF)?
>
>TIA, PG.
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