I put the battery in the trunk and used '0' guage welding cable....pure dead soft oxygen free copper with a damn near destruction proof insulating sheath. Also put the starter rely in the trunk.

 

Now that makes sense. Instead of running heavy 12v+ wire up the car, run just a heavy ground of the same 0 gauge welding wire. Having the starter relay in the trunk would then allow you to run the supportive wires easier up to the front. Plus, I could bundle the wire needed to keep the radio stations active, while positioning a good wireless cut offdevice.

Here is the story about how I got my car: https://mustangforums.com/m_2756701/...tm.htm#2756746

 

I have never completely understood why moving a20 pound battery to the trunk makes any difference in how your mustang performs. Can someone scientifically or redneck break this down so that the world will finnaly understand this idiocy?

 

Idiocy? Little harsh, huh? [sm=icon_quiet.gif]
For me, not a preformance issue. Want to lock the battery in the trunk, as I have been used to the set up with my `77 XJ-S 350ci conversion daily driver. I like the idea of a key fob cut-off switch, less chance of anyone heading for Nogalas with my cars. No juice to the front end, no start. Too much trouble for most to jimmy the trunk to go looking for a cut-off switch, that is hidden quite well. Each to their own, huh?

 

If you subtract 20lbs from the front and add 20lbs to the back you will get closer to a 50/50 front to rear weight ratio for handling. That being said, if you are not racing there is not much point. That being said, I moved mine to the trunk and I'm not racing.

 

I have been on this and other Mustang forums for many years now, and noone has been able to completely explain the advantage of moving the batterty to the trunk, Obviously, there is an advantage, because a lot of guys are doing it. But there has never been a complete and comprenensive scientitfic reason offered as to why as far as I know. Here is your opportunity to make your statement in the positive for moving your battery to the trunk.

 

It is a matter of weight distribution, like what was discussed earlier. Also, sometimes the battery was moved because there was no longer room in the engine compartment for it (i.e. Boss 429 & 67 Eleanor's 5.4 DOHC SC). Moving it to the right rear of the trunk will put the battery's weight on the right rear wheel providing additional traction.

 

If you move 25 lb 10 ft it has the same affect as moving 250 lbs 1 foot. Pretty neat, huh?

 

I agree its a weight distribution thing .We race fox body mustangs on dirt and have our batteries in the trunk for two reasons .One is safety ,if i get in a wreck i dont want battery acid in front of me.Two for the weight,by putting the battery on the left side in the rear we can more easily obtain the crossweight needed for the banking on the dirt track.Now that being said my 70 doesnt race on dirt tracks and most roads dont have 12 degrees ofbanking but having the battery in the rear seems to make it handle just a little bit better.The main reason is for the one mentioned above,a cut off in the trunk.No power to the front not as much chance of adrive away theft.

 

Umm what you said about moving 25 pounds 10 feet making it like moving 250 pounds only exists it your on a fulcrum point. Kinda like a teater toter. Doesn't apply for a car.

People do it to balance the car (high perf racing apps usually)...but when you think about how many things are on one side of the car and not the other (the driver for one) it gets kinda ridiculous. I do know in most any form of track racing they require it as a safety precaution (less chance of a battery leak in a wreck if its in the trunk). Same reason you put it inside the car in a demolition derby.

Sooooo daily drivers can claim they do it for balance but it doesn't really do them any good, unless its just for looks