Art161

Are these the only things that need changing when switching from the 96R (small) to 40R (large) battery?

1. Remove a couple of plastic pieces from the existing battery tray to accommodate the longer battery.

2. Install a heat shield designed for the longer battery.

I think that everything else (e.g., tray, hold-down bolt/clamp) is the same for both batteries.

Thanks.

NJ3

That's everything, I did the same last year when my original battery died.

Goldenpony

I made this switch when my OE battery went over the rainbow. I didn't bother with the heat shield, I don't think it really does that much. I went with an Interstate Megatron 40R.

Unleashedbeast

Why a larger battery? Do you require more reserve capacity? Is the larger battery cheaper? I'm sure the larger battery weighs more. Just curious why the change in size.

deekum1627

me to? i just went with a red top optima

Art161

My original Motorcraft battery starting dying after about two years, and was replaced under warranty. If the replacement does not last at least three years, I will probably go with an Interstate battery. As far as I know, Interstate does not sell a Group 96R battery.