Straight 6 to V8, wire harness ?

[NGN]

Well I'm taken out the original 1967 six and putting in a 1967 327 four barrel, keeping the manual choke. My question is do I need a V8 harness. No AC , plan jane.
I'm pretty sure I got all the other parts but hey chime in maybe I don't.
Thanks
Nick.

[randy500]

Engine harness wiring harness as far as diagram, pinout is the same 6 cyl, v8, Gauges or no gauges.

Yellow, coil, stsrter relay terminal
Green, temp sender, guages or not
Brown white stripe, if used, tcs
Tan, brake warning switch
Purple, starter

I dont think i missed anything, if i did, you can see its all the same just different lengths and sometimes terminal type.
For example, i think temp warning lamp for no guages has a different terminal and location than guages but still uses the green wire in the same spot on the fuse panel connector.

[NGN]

Thanks randy500, I failed to ask but you happen to mention , there's a difference in length, so that means I'll need a V8 harness and or splice and lenghten my original L6 wires. I hope I'm making sense , lol
Thanks again
Nick

[Andy4639]

The only thing I know is you may have to make some of the leads longer as Randy said. I'm fixing to do the same thing but with HEI built into the old 6 wiring and internal regulator also.
I have pulled it all out of the truck and have it cleaned up ready to start back but I have some mods I plan on it, here my link with what I'm doing.
Going from 3 speed to auto so adding NSS also going to be putting AC in it some time. Radio, amps.
I'm think about a early 80's V-8 truck to get the harness out of it. Are the link at the end of my thread with the $99.99 kit.


https://67-72chevytrucks.com/vboard/...95#post8618195

[randy500]

Originally Posted by NGN

Thanks randy500, I failed to ask but you happen to mention , there's a difference in length, so that means I'll need a V8 harness and or splice and lenghten my original L6 wires. I hope I'm making sense , lol
Thanks again
Nick

You probably wont need to make any of them longer.

The starter is in the same side, the coil is further away from the firewall

I dont remember the location of the temp sensor on a 6cyl, if its in front then the wire should be long enough.

You will probably have to untape the harness, route the wires then retape it.

[Andy4639]

Temp senor is in the front drivers side of the 6 cylinder on mine. You can see it behind the fuel filter. Second picture it's in the shadow.