#1  
Old 04-27-2021, 09:13 PM
Goatracer1 Goatracer1 is offline
Ultimate Warrior
 
Join Date: Oct 2003
Location: NH
Posts: 3,768
Default spark plugs

I have a 428 with Edelbrock heads, Holley, ProCharger and HEI distributor housing with just the magnetic pickup in it. I use an external coil and control box. It's been 20 years since I put new plugs in it and even though it still runs good I decided to treat it to new plugs. I have always used Champion RC12YC on the street and RC9YC when I raced it. Now there are Platinum, Double Platinum, Iridium and ones with multiple electrodes. Do any of these new designs work enough better than what I have to make it worth changing? Or should I just stick with what worked in the past?

  #2  
Old 04-27-2021, 09:24 PM
gtokid1968's Avatar
gtokid1968 gtokid1968 is online now
Senior Member
 
Join Date: May 2013
Location: IN
Posts: 235
Default

Stick with what works.

  #3  
Old 04-27-2021, 09:32 PM
Dragncar Dragncar is offline
Ultimate Warrior
 
Join Date: Mar 2004
Location: Humbolt County California
Posts: 8,283
Default

Stay away from Chumpions. I have had 2 fall apart on me. Electrode, gone, Engine ate it or spit it out.

  #4  
Old 04-27-2021, 09:36 PM
OG68's Avatar
OG68 OG68 is offline
Ultimate Warrior
 
Join Date: Dec 2011
Location: Chula Vista, CA
Posts: 1,475
Default

Champion isn't the same company as before. Swallowed up by big business where profits override quality.

__________________
Ed

1968 GTO (Thanks Mom)
2006 Silverado
2007 Cadillac SRX
2015 Chevy Express

  #5  
Old 04-27-2021, 11:27 PM
Mike Davis's Avatar
Mike Davis Mike Davis is offline
Ultimate Warrior
 
Join Date: Jun 2000
Location: Athens Ga, or at a NMCA race
Posts: 1,994
Default

NGK would be your best bet.

__________________
66 GTO Nostalgia Super Stock/Street Legal Car
421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99
Multiple NSCA/NMCA World Champion

66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles
67 GTO 2dr Post, 428, Tri Power, 3.55 Gears
80 Trans Am Black SE Y84 W72 WS6
  #6  
Old 04-27-2021, 11:30 PM
firechicken's Avatar
firechicken firechicken is offline
Ultimate Warrior
 
Join Date: Jan 2001
Location: BC Canada
Posts: 1,624
Default

If it ain't broke...

  #7  
Old 04-28-2021, 05:40 AM
Cardo's Avatar
Cardo Cardo is offline
Ultimate Warrior
 
Join Date: Sep 2000
Location: Charlestown, In.
Posts: 1,667
Default

+2 NGK

__________________
"I know just enough to keep me here, but not enough to get me out"
  #8  
Old 04-28-2021, 08:21 AM
Formulajones's Avatar
Formulajones Formulajones is offline
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,794
Default

Stick with a copper core plug.

NGK and Autolite would be my choices.

__________________
2019 Pontiac Heaven class winner

https://youtu.be/XqEydRRRwqE
The Following User Says Thank You to Formulajones For This Useful Post:
  #9  
Old 04-28-2021, 02:11 PM
Kenth's Avatar
Kenth Kenth is offline
Ultimate Warrior
 
Join Date: Feb 2003
Location: The Kingdom of Sweden
Posts: 5,457
Default

40 years ago i learnt a lot of troubleshooting an engine and when the smoke and dust settled with a new set of ACDelco replacing the Champion "race-plugs" finally engine ran like it should.
Lesson learnt, avoiding "tres hombres", Champion, Mallory and MrGasket since.......

__________________
1966 GTO Tri-Power
1970 GTO TheJudge
http://www.poci.org/
http://gtoaa.org/
The Following User Says Thank You to Kenth For This Useful Post:
  #10  
Old 04-28-2021, 03:05 PM
Schurkey Schurkey is offline
Ultimate Warrior
 
Join Date: Aug 2002
Location: The Seasonally Frozen Wastelands
Posts: 5,891
Default

Quote:
Originally Posted by OG68 View Post
Champion isn't the same company as before. Swallowed up by big business where profits override quality.
Far as I'm concerned, Champion has ALWAYS been junk.

Champions had the most brittle porcelains in the industry thirty years ago when I swore I'd never buy another one. Far as I know, nothing has changed in that respect--but since I don't buy them, my experience is very limited.

Champion plugs ALSO had soft, fast-wearing electrodes back then, and so far as I know, they still do.

I liked Autolite until they went to China.

NGK and AC for me, now.

Feedback-Fuel-injected vehicles can benefit from long-life plugs using Platinum or Iridium. Carbureted vehicles are going to leave deposits on the plugs so there's no point to long-life plugs in that application. Copper-core plugs aren't so expensive, they may be worthwhile.

Multiple ground electrodes are a marketing gimmick.

  #11  
Old 04-28-2021, 04:27 PM
Formulajones's Avatar
Formulajones Formulajones is offline
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,794
Default

For what it's worth, NGK is Japanese so I don't view that as any better than China.....But the plugs seem okay from my experience using them. I just don't care for their backwards heat range numbers that don't follow the industry standard.

I dropped ACdelco more than a decade ago when they started screwing with their heat ranges and dropped a bunch of part numbers in the process..


As far as origin I really don't think that means a whole hell of a lot anyway as pretty much all of it is made in some other country these days.

__________________
2019 Pontiac Heaven class winner

https://youtu.be/XqEydRRRwqE
  #12  
Old 04-28-2021, 04:38 PM
ZeGermanHam's Avatar
ZeGermanHam ZeGermanHam is offline
Ultimate Warrior
 
Join Date: Nov 2016
Location: Seattle, WA
Posts: 1,924
Default

NGK is good stuff. They are the go-to plug in the BMW world which I am also involved with.

__________________

1966 Pontiac GTO (restoration thread)
1998 BMW 328is (track rat)
2023 Subaru Crosstrek Limited (daily)
View my photos: Caught in the Wild
  #13  
Old 04-28-2021, 06:12 PM
Cardo's Avatar
Cardo Cardo is offline
Ultimate Warrior
 
Join Date: Sep 2000
Location: Charlestown, In.
Posts: 1,667
Default

A lot of the Motorcraft plugs are made by NGK also.

__________________
"I know just enough to keep me here, but not enough to get me out"
  #14  
Old 04-28-2021, 06:53 PM
Mike Davis's Avatar
Mike Davis Mike Davis is offline
Ultimate Warrior
 
Join Date: Jun 2000
Location: Athens Ga, or at a NMCA race
Posts: 1,994
Default

Quote:
Originally Posted by Formulajones View Post
For what it's worth, NGK is Japanese so I don't view that as any better than China......
Don't tell anyone from Japan that. They do not like China made products or the people.

__________________
66 GTO Nostalgia Super Stock/Street Legal Car
421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99
Multiple NSCA/NMCA World Champion

66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles
67 GTO 2dr Post, 428, Tri Power, 3.55 Gears
80 Trans Am Black SE Y84 W72 WS6
  #15  
Old 04-28-2021, 10:50 PM
59safaricat 59safaricat is offline
Senior Member
 
Join Date: May 2006
Location: Land of the fee, home of the slave
Posts: 246
Default

+3 NGK. Standard plug in my Toyota and Honda but always an upgrade in my non Jap vehicles. I cross-reference and convert ALL of my small engines to NGK.

  #16  
Old 04-28-2021, 11:25 PM
Goatracer1 Goatracer1 is offline
Ultimate Warrior
 
Join Date: Oct 2003
Location: NH
Posts: 3,768
Default

It's beginning to look like I will stay with the Champion plugs I am used to. I crossed the RC12YC number and came up with 11 different NGK numbers.

  #17  
Old 04-29-2021, 06:28 AM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

Try the BKR6E. I use them in my Edelbrocks. They make it in a 7 as well which is colder.
ETA:The 6 would replace your 12, the 7 your 9

__________________
'65 Tempest 467 3650# 11.30@120.31

Last edited by Scott65; 04-29-2021 at 06:34 AM. Reason: Clarification
  #18  
Old 04-29-2021, 07:02 AM
Cliff R's Avatar
Cliff R Cliff R is offline
Ultimate Warrior
 
Join Date: Nov 2000
Location: Mount Vernon, Ohio 43050
Posts: 17,972
Default

I use NGK's exclusively.

Over the years have had a few go bad in chainsaws, but none have every cracked or fell apart.

Champions are a ticking time bomb. They crack if you stair at them too long and we had one fall apart and go thru an engine completely destroying it!

Same with Fram Oil filters, they should be avoided like the plague. Had one of those fail and I got the engine back here in the bed of the owners truck only to find NOTHING wrong with it other than he installed a Fram oil filter and it came apart and he lost oil pressure.......

__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran!
https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
The Following 3 Users Say Thank You to Cliff R For This Useful Post:
  #19  
Old 04-29-2021, 09:11 AM
Formulajones's Avatar
Formulajones Formulajones is offline
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,794
Default

Quote:
Originally Posted by Mike Davis View Post
Don't tell anyone from Japan that. They do not like China made products or the people.
LOL, What I mean by that is it's all foreign made crap these days. People like to complain about China or this or that when what ever else they buy is still made in some other foreign country somewhere, and not necessarily better quality all the time.

It's all a crap shoot these days. Buy something and try it, if it works, great, if it fails, buy somewhere else. Not a lot we can do about it, especially now.

__________________
2019 Pontiac Heaven class winner

https://youtu.be/XqEydRRRwqE
  #20  
Old 04-29-2021, 09:13 AM
Formulajones's Avatar
Formulajones Formulajones is offline
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,794
Default

Quote:
Originally Posted by Goatracer1 View Post
It's beginning to look like I will stay with the Champion plugs I am used to. I crossed the RC12YC number and came up with 11 different NGK numbers.
Yeah you'll get that with NGK. They offer an entire selection of heat ranges. One thing good I can say about them (other than they do work well, I'm not knocking them)

Where as other brands like ACDelco and Champion are very limited in heat ranges, and in the case of ACDelco some heat ranges that were previously available have disappeared.

__________________
2019 Pontiac Heaven class winner

https://youtu.be/XqEydRRRwqE
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:02 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017