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Re: 5.3 drivetrain into my '69 GMC 3/4 ton
Holley makes a complete kit to put the LS engines into your truck.
One thing you need to determine is if the crank has a 24 tooth or 58 tooth reluctor wheel. If its a 24 tooth you need one ECM for engine and trans control. If it's a 58 tooth and you going to run an auto you need A ECM and TCM.
Couple of build pics.
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