spark plug choice

[mechanicalman]

Originally Posted by 1967chevy c10

I like accel sorty plugs. There good if you have headers do to tight space.

Used them on my 88 formula 350 after I put Edelbrock headers on it: Life-savers.

[mechanicalman]

Originally Posted by blown&0chevelle

Thanks guys. I still have the old point system if I was to change to hei is their anything I would need besides the distributor?

Your wires need to be specific to HEI cap, female wires cap end like the spark plugs, points cap takes a male end. You can use 7mm wires if they are made for an HEI, the factory did it all the time and they will fit factory looms; I have 7mm on mine, no deficits. Take your pick:
http://www.summitracing.com/search/p...20plug%20wires

[don t. - 72gmc]

Originally Posted by mechanicalman

Your wires need to be specific to HEI cap, female wires cap end like the spark plugs, points cap takes a male end. You can use 7mm wires if they are made for an HEI, the factory did it all the time and they will fit factory looms; I have 7mm on mine, no deficits. Take your pick:
http://www.summitracing.com/search/p...20plug%20wires

I read on this site years back, but I don't remember specifics.
If you swap points to HEI, there was a certain year Corvette plug wires that are the correct length to fit our trucks, and they had the correct ends.

HTH...don t. ...

[EARNHARDT#3]

Originally Posted by mechanicalman

Right on! I agree with everything you said.

I think that at some point auto manufacturers and spark plug manufacturers played games with the actual heat ranges in order to sell their plugs to their people and to make Champion look bad as I don't recall them being standard equipment? Not sure. But I think with the many brands of cars now available, heat ranges are a bit more honestly portrayed?

No, let's NOT talk about oil filters, manifold vacuum vs ported vacuum, PCV valves, etc.

Don't forget about the infamous "PVC" valve LMAO!!!

[enaberif]

I will confirm on the 0.035 to 0.045 plug gap. My truck was converted from points to HEI and I couldn't figure out why my truck ran like crap until I checked the gap.

Also had to replace the points resistor wire which is easy enough to do with replacing the wire from the bulkhead. You'll need a new terminal end to do it properly though but then its oem.

[CST10]

0.035" for points. Hei use 0.045" gap. Plugs are your choice. I use R44TS since I do a lot of slow cruising and very little hauling loads in my truck. If you convert to hei it will run a whole lot better.