1967 plugs and wires

[Keith G.]

What plug #s are right for a 300hp and the wires should say packard, any thing else I should know?

[Timothy B.]

Re: 1967 plugs and wires

Keith,

The general consensis is 45 heat range. The AC plug will be resistor (R45) but I think other manufactures have them non resistor.

[John H.]

Re: 1967 plugs and wires

If you feel you need the dated reproduction Packard wires, check them with an ohmmeter first, and be VERY careful installing them - they're fragile. There are more reliable non-dated alternatives.

[Gerard F.]

Good advice, John

Finished my plug and plug wire project, and got totally frustrated with the LL repro wires for my 67. Before I put them on, I ohm tested them and found 3 out of the 8 way out of spec.

I would have been better off with a $20 NAPA set with a 5 Year/50000 mile guarantee. They ohmed out a lot more consistent them the LL wires. Too bad they are gray.

I don't see how LL can sell these wires for $60 plus, seems like they have no quality control.

Well, I wound up using the 5 good ones and left the other older 3 with the orange boots in place. (they ohmed out OK). I kept the Napa set for when the LL ones go out.

Should have started off with a set of those Petronix you recommended.

Learned a few things on my project:

1. Easiest way to thread the 1234 wires through the motor mounts and lower shields is to cut off the plug boot of the old, tape the cut end to the new distributor end (less the boot) with a little reinforcing wire, and then just pull it through.

2. Also tried the string method of pulling the wire through the other way and attaching a string, then attaching the string to the distributor end of the new wire and pulling it through. Well the string got hung up, I pulled a little too hard and it came off the end of the wire. Oh no

Not to worry, I was able to fish a piece of #14 house wire through, then attached the plug wire to it and it pulled right through.

Moral of the story: If you are going to use the string method, use wire instead of the string

3. Another thing I found is that you should check your plug wire ohms again, just before you make the connection at the distributor and at the plug.

Very frustrating day with the LL wires, but I had some fun and learned a lot. The 67 is running pretty smooth now, idles at 500 with the Vintage Air on high, 600 with it off.