Starter cable size

[absintheisfun]

I have moved the battery to the rear of the vehicle (67 camaro) and ran a 1/0 cable to a distribution block on the firewall. I initially ran another 1/0 cable from the block to the starter, but its so fat it is touching the starter case. In order to run it, I had to put a 90 degree bend in the terminal so it wouldn't be too close to the headers.
I'm concerned that over time it may rub through the insulation and ground out.

So, would a thinner cable be okay from the distribution block to the starter? Its about 5 feet long. I see that 4 gauge wire can carry 150 amps, but starters can draw up to 250 amps during crank right?

I'm also trying to figure out the best size from the alternator to the distribution block..again, thinking 4 gauge would be suitable.

Any advice would be appreciated.

[icemanrd19]

I’m using 2awg from starter to firewall lug, alternator to firewall lug, and inside the cabin to the same lug to battery 2awg. No issues. I would love to check out the car some day

[badazz81z28]

Why not put a chafing material over it? With some heat tape? I'm currently using "Heatshield" wrap. I have found this new marine cable I'm going to use, the insulations is very thick. https://www.ebay.com/itm/Extreme-Battery-Cable-Marine-Auto-Solar-Extra-Flexible-Pure-OFC-Copper-USA-Made/133112862792?hash=item1efe251848:g:jRsAAOSwwJhdLLR k

[dhutton]

Current rating has a lot to do with temperature rise of the wire. Since cranking is only a brief time it’s really not a concern. 2 should be fine imho, especially for an LS starter.

Don

[badazz81z28]

You also gain resistance the longer the wire is. I’m dealing with this issue right now...I’m upping my starter wire gauge.

[absintheisfun]

Thanks for the advice. 2 it is.

[OldTimer]

I'm running a 2 AWG from Battery to Starter, using a 90° fitting on the starter end and I also used a thermal case. Battery is currently in the stock tray up front, have a 4 AWG wire with a Fusible Link running from Alternator to Battery, and a 8 AWG with Fusible Link from Battery to Junction Block. Switched over to a JEGs dual post Junction Block, the lower post is 12v Hot, the upper is 12v Switched using a relay. I also ran a ground with 8 AWG from Alternator to Engine Block. Got most my cables from Tony at CE Electric, they are super flexible and have a nice thick insulation.

183838

Maybe down the road I'll move the battery to the trunk... how did you run that Fatboy in the car or underneath?

Mike

[cpd004]

CE makes awesome cables.