Team Chevelle banner
1 - 4 of 4 Posts

Registered
Joined
869 Posts
Discussion Starter · #1 ·
Finally have my truck to the point it should be running today.
Made up the new plug wires yesterday.
I have One spark plug (#3) that puts the boot very nearly touching the header.
I just put in all new plugs when I did the rebuild.

So, would I get away with just one short plug?
Replace them all so they match?
Which short plugs perform best?

This is my 81 C30 support truck, it tows and makes long trips to retrieve cars and parts.
Engine is almost stock with Quadrajet, HEI, a compression bump to a little over 9-1, and an RV cam.
Trans is NV4500 for the OD.
 

Registered
1966 Malibu, 327, Muncie, 3.23 posi
Joined
273 Posts
Funny how this subject has come up a few times this week. I just changed plugs and had header/plug probs too. I replaced my short ACR43TS plugs with NGK UR5 plugs. They were shorter than my already short 43 plugs and in the same heat range. Perfect for headers!
NGK's are also Made in Japan ..and that is one kick-ass album so the plugs gotta be good 馃
 

Registered
Joined
4,771 Posts
If your local parts store or Meijers or Walmart has a lawnmower section, look at their spark plugs. In the past, I have sold short lawnmower plugs to guys that have the same problem you are having.
 

Registered
1967 Chevy el camino 396 big block
Joined
3 Posts
Finally have my truck to the point it should be running today.
Made up the new plug wires yesterday.
I have One spark plug (#3) that puts the boot very nearly touching the header.
I just put in all new plugs when I did the rebuild.

So, would I get away with just one short plug?
Replace them all so they match?
Which short plugs perform best?

This is my 81 C30 support truck, it tows and makes long trips to retrieve cars and parts.
Engine is almost stock with Quadrajet, HEI, a compression bump to a little over 9-1, and an RV cam.
Trans is NV4500 for the OD.
ACCEL MAKES A SHORTY PLUG
THAT WORKED FOR ME
 
1 - 4 of 4 Posts
Top