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Old 07-21-2007, 12:22 PM
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HEI igition module burn out

Hi I am woodz87. Ihave a 87 Z-28 Camaro I got new. IT came with a 305 carb engine after, 250,000 I up dated the engine.Three years ago I got a new crate engine from GM. 330hp 350 engine came complete everthing on it. Now in the last three years I have replaced (8) igition module. Everthing is grounded at the (7) replacement the coil was replaced. They ALL died in the garage I would take it for a drive come back put it in the garage next day it dosent start. That engine makes a lot of heat it dosen't run hot but you can feel it coming up from the floor and firewall. How do I know the trouble?Or is my only answer MSD-6AL and do away with the module.I think that is over kill for street running. still has original gears and they are high. Can anyone help me out THANKS woodz87

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Old 07-21-2007, 01:56 PM
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Doc here,

Please, Explain EXACTLY the procedure you use in replacing the modules..I think I can help you..

ALSO:::

THOSE modules have a abysmal fail rate...like 1 in 3 or 5 right out of the box...ALWAYS, have them tested BEFORE YOU LEAVE THE STORE!!! like 10 times in a row to heat the module up..( Any module will run fine at 72 air conditioned degrees ... once..) AND once you leave the store...It becomes your $$ problem..

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Old 07-21-2007, 02:38 PM
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Repty TO docvette

I got the replacement'ssss from GM parts took them home put the grease on put it back together it fired right off.I'm not sure how a GM parts house would thing about testing there new part. I still think it has something to do with the heat because it always dies in the garage after a drive. O it has been replaced by a specialed shop that dose GM DELCO work first time he said it didn't have the right grounding washers that lasted two month.Roll backed 20 miles to him agan now he said tha coil was spiking it. I just replaced it again on tuesday. Thanks woodz87
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Old 07-21-2007, 06:45 PM
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Doc here,

Do you have a Crank sensor on your engine?

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Old 07-22-2007, 07:16 AM
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Doc no crank sensod the computer dosent controle the distributor or carb.
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Old 07-23-2007, 03:18 PM
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Doc here,

In which case, I have to ask..

Are you using the stock Distributer (EST) , or something else?

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Old 07-23-2007, 03:58 PM
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I had this same problem with an HEI in my 402 71 Chevy pickup. A friend told me to try a different HEI, and he gave me one to try. That was 3 years ago. His HEI is still in my truck.
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Old 07-23-2007, 04:09 PM
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DOC .This engine is a GM built crate engine. Came new complet everthing new ,all parts card,hei,water pump, all I needed to put on was started ,fuel pump.The parts list Distributor assembly part #1104067 number was changed to#93440806. woodz87
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Old 07-23-2007, 04:28 PM
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Quote:
Originally Posted by woodz87
DOC .This engine is a GM built crate engine. Came new complet everthing new ,all parts card,hei,water pump, all I needed to put on was started ,fuel pump.The parts list Distributor assembly part #1104067 number was changed to#93440806. woodz87

Doc here,

What CARD???????????

I thought you said this was non computerized?

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Old 07-23-2007, 04:57 PM
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DOC sorry CARB this is a old style HEI IT dosen't run through the computer
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Old 07-23-2007, 07:08 PM
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Doc here,

Were you aware of this:

Quote:
Originally Posted by GM Parts
This distrbutor has the melonized cam drive gear P/N 10456413 for steel roller camshafts. This distributor is required on all crate engines and roller camshafts that are made of steel. If engines are assembled not using this gear, it may affect your engine warranty. Use connector wire P/N 8917052 to ignition. Used with all small and big-block V8 High Output engine assemblies.
Technical Notes: Components in these groups are interchangeable with small-block Chevrolet V8s. GM Performance Parts distributors cannot be used with "tall deck" Bow Tie block P/N 14044808.
And does yours comply?

GM Parts

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