We have a 68 vert with a 75 400 overbored 60. HEI dist. Heads are 73 4x. We are trying to figure out which plugs we should use (ACDelco 45tsx?) and which wires. Does anyone have recommendations? We hope to turn a key next month and dont want to mess up first ignition with assumtions.
Thank you,
Doug & Dustin

What compression ratio?

We have no idea... how should we check?

For wires you can use just about anything you want. I prefer the Moroso Blue Max Spiral Core wires. They come as a universal set for either standard or HEI (you put whatever end you need on the wire.)

You could get a rough idea by checking the codes on www.wallaceracing.com and then using their compression calculator.

I had the Taylor 8mm blues on, but hated the look on the near 100% stock restored engine, so went to the black AC Delco's...

Now I just have to find me some stock wire looms...

For a street car there is no advantage in using aftermarket ignition wires. Don't hesitate to use factory (reproduction) wires if you want a stock look. Use spark plugs that are appropriate for you specific engine. You will have to dig in and undrstand your engine a little better before choosing plugs.

Called the shop that did our rebuild and they said to use plugs for a 69 400. So we'll try Autolite 86 plugs and use stock replacment wires. They said to gap the plugs for HEI. All we could find refernce on is .035 gap but beleive that is for a points type distributor. Would HEI be a different gap? More like .045? or even .050?
Thanks for the suggestions

I would gap to .40 and look at the ac delco plugs for reliability.

Hi Dave, I live in highlands Ranch Co. we have a group of 1st geners.in the denver area of about 20 cars. Let me know if you want me to add your e-mail to the list. Raz