Yet another Big 3 question

[BNolan12 10+ year member]

Ok guys getting ready to do big 3 and I have a question.. I found my alt + to battery + and I found battery negative to chassis. Where is the engine ground to chassis usually located or is this a connection that is not previously there and that I'm making in addition to the other two? Sorry if this is a dumb/stupid question, I'm just not sure about this. Any help appreciated.

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[tdford5 10+ year member]

mine was a little braided wire ,but u can just add another engine ground from engine to shock tower , u may b all day try to find that ground i just left my factory ground and added the 0 gauge ground

 

[jtomsic 5,000+ posts]

shock tower isnt a good location for that bro... find a good spot check the big 3 thread also.

 

[Mitch86 5,000+ posts]

On the two vehicles I've done the big 3 on they were both a braided wire on the bottom of the engine block to the frame. Get underneath and look around for a flat braided wire. Or you can just do another in a different location if you can find a good one.

 

[accuab 10+ year member]

On a lot of cars you will see a wire coming off the battery negative and going toward the engine somewhere. Many will go down to around the starter or transmission. Also, how is the strut tower not a good place for the ground? As long as you sand the paint down, you have access to the body as well as a bolt that will connect to the frame of the car.