Re: V8 into 258 humpster
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Re: V8 into 258 humpster



I did a V8 swap on my daughters 71 and didnt have to change the wire harness the wires I needed were in the loom I did have to lengthen the alternator wires since the alternator mounts on the opposite side of the engine. The battery tray is on the opposite side on the 71 six cylinder so depending on what you do you may have to run a longer starter cable
On Friday, February 11, 2005, at 02:09 PM, neprocap@xxxxxxx wrote:


John,
Not only will you need the crossmember, you'll also need a V8 wiring harness. In 72 AMC went to a split harness. It separates at the firewall so the conversion would take a V8 crossmember and the front, under the hood section of the harness. Unfortunately 71's don't separate so it requires replacing the entire harness. The other options are to replace the entire harness with a Painless harness (can be expensive) or cut and paste to make the 6 cyl harness longer under the hood. This second idea is considerably less expensive but can be a little time consuming and depending on how detail conscience you are, could be a little crude looking. In the long run this is a worthy modification so don't get discouraged. Good luck...




On February 11, 2005 Widiker, John D wrote:

I've never paid attention to the 6 to 8 swaps, but tomorrow I'm picking up a
1971 humpster with a six and am wondering how much I'll need to swap in my
extra 360. I know some of the cars require cross member swaps does this
apply to a 1971 Javelin too?? Thanks.



~John




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