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Feb 21, 2011 | 10:42 PM

fordboy300

Thread Starter

Laughing Gas

Joined: Dec 2010

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Quick Question??

is the MSD-6a box the same thing as the EEC-IV truck computer???

Feb 21, 2011 | 11:00 PM

fmc400

MSEE

Joined: Apr 2004

Posts: 10,386

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From: Austin, TX

Quick answer: No.

EEC-IV is a fuel injection computer. MSD-6A is just an ignition control module. It performs the same function as a Duraspark module.

Feb 21, 2011 | 11:20 PM

fordboy300

Thread Starter

Laughing Gas

Joined: Dec 2010

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Gotcha!

Feb 22, 2011 | 04:42 PM

kedwinh

Posting Guru

Joined: Jun 2004

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From: Casa Grande

Isn't the EEC-IV also the same one used on the feedback carb trucks?

Feb 22, 2011 | 08:11 PM

fordboy300

Thread Starter

Laughing Gas

Joined: Dec 2010

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Quote:

Originally Posted by kedwinh

Isn't the EEC-IV also the same one used on the feedback carb trucks?

thats what i thought too!!

Feb 22, 2011 | 08:48 PM

kedwinh

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Joined: Jun 2004

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From: Casa Grande

I guess the MSD 6a would be the same thing as the TFI module on the side of the distributor, or the DSII module on the fender. Basicly the MSD is a ignition control box not a engine management system like the EEC.

Feb 23, 2011 | 10:37 AM

Harte3

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Joined: Dec 2006

Posts: 3,603

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From: Spokane, WA

A MSD6a, Mallory HyFire6a, Summit Street and Strip, etc., can replace a DSII module but I don't think they will can replace a TFI module and for sure not the EEC. When switching to a DSII from a TFI system the DSII distributor and an ignition box have to be used but the TFI coil can be retained.