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Discussion Starter · #2 ·
I do not beleive that you need to do the nutter bypass to upgrade to the GM HEI.

The GE HEI is an increased spark upgrade the the Nutter bypass is a Ox and fuel mixture modification. If your Carter BBD w/ the stepper is working fine I would not mess with it. I have one and mine is working (for now). When I do have problems I am going to a new Carb or EFI.

I would try the upgrade and if it does not work then do the nutter bypass.

O|||||O
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If your stepper is working then there is no reason to unplug it. You also don't need to do the Nutter bypass. Just get a working HEI and new plug wires and you are set. I got an HEI at Aaron's auto parts on S. Congress for $45. The AMC drive gear from 4WD Hardware is about $20. All I need are the plug wires and a couple of hours for the install. Let me know if you need any help.

Tom

P.S.I have my stepper unplugged because it isn't working properly.

85 CJ7-4.2L,T-176,D300,2.5" lift,32"BFG MT,Durabak,York-Air,HEI?
 
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