logo
12 Port News - Features
12 Port History
Casting Numbers
Online Store
Tech Tips
Become a Member
Previous Thread
Next Thread
Print Thread
Rate Thread
#77388 10/10/13 08:40 PM
Joined: May 2003
Posts: 218
R
radar Offline OP
Contributor
OP Offline
Contributor
R
Joined: May 2003
Posts: 218
I have been running my 40 Chevy with a mild GMC 302 for 20 years using the same park plugs that came with the used engine. They are Champion 1J11Y. I also have a an HEI distributor powering the plugs. They work fine but I'd like to replace them before they disintegrate. They seem to run just about right heat wise with a light tan color on the insulator. Any suggestions for modern replacement plugs?


FranK Hainey
Joined: Apr 2003
Posts: 1,535
Likes: 15
1000 Post Club
****
Offline
1000 Post Club
****
Joined: Apr 2003
Posts: 1,535
Likes: 15
Hi Radar . . .

Green Spark (in the UK) is a great place to get cross reference info to modern plugs (not to mention specs):

The Green Spark Plug Co

You might also check ebay - there's alot of NOS plugs still floating around - for example item 251352595738 is a set of eight J11Ys.

regards,
stock49


[Linked Image from 49fastback.com]
Joined: Jun 2000
Posts: 272
5
Contributor
*****
Offline
Contributor
*****
5
Joined: Jun 2000
Posts: 272
NGK 3332 plugs work great with a high voltage coil and/or an HEI. I am running a set gapped at 0.050 inches with an HEI distributor and they work much better than the original AC R44 plugs. Starts easier and idles smoother.

Joined: Oct 2006
Posts: 185
G
GH Offline
Contributor
Offline
Contributor
G
Joined: Oct 2006
Posts: 185
I run the AC R43 plugs, this is with 6 LS coils and a Mega-Squirt engine management.

Joined: Aug 2006
Posts: 289
J
Contributor
*****
Offline
Contributor
*****
J
Joined: Aug 2006
Posts: 289
Spark plugs.com. NGK 1/2" reach with washer....Worked for me for many years. Good Luck.........


216.158 MPH 12-Port 302 GMC on 70% 171.0 MPH 302 stock head on gasoline 7 years later
Joined: Nov 2013
Posts: 21
Active BB Member
Offline
Active BB Member
Joined: Nov 2013
Posts: 21
There are more and more powerful guy, experienced


http://www.domoautoparts.com Venta de Repuestos de Autos,control arm,shock absorbers,car clutch
Joined: May 2000
Posts: 1,464
1000 Post Club
*****
Offline
1000 Post Club
*****
Joined: May 2000
Posts: 1,464
I converted my old 18 mm plugs over to 14 mm plugs with these adapters. $10 each. Now I can use many 14 mm plugs of various designs and heat ranges.

[IMG]http://img.photobucket.com/albums/v608/6racer/TECH%20IN[URL=http://smg.photobucket.com/user/6racer/media/TECH%20INFO/18mmadaptors02-1.jpg.html]FO/18mmadaptors01-1.jpg[/IMG][/URL]


Last edited by THE FRENCHTOWN FLYER; 11/29/13 12:51 AM.

FORD 300 inline six - THE BEST KEPT SECRET IN DRAG RACING!
Joined: Oct 2009
Posts: 470
Likes: 9
M
Contributor
****
Offline
Contributor
****
M
Joined: Oct 2009
Posts: 470
Likes: 9
Is that a typo, 1J11Y? Or is it J11Y

Joined: Apr 2003
Posts: 1,535
Likes: 15
1000 Post Club
****
Offline
1000 Post Club
****
Joined: Apr 2003
Posts: 1,535
Likes: 15
 Originally Posted By: mdonohue05
Is that a typo, 1J11Y? Or is it J11Y


As far as I know a '1' in the first position is not a valid part number:

Spark Plugs UK


Moderated by  stock49, will6er 

Link Copied to Clipboard
Who's Online Now
0 members (), 216 guests, and 21 robots.
Key: Admin, Global Mod, Mod
Newest Members
Skulptorchaz, Ryan Clark, chevy454, TCH54, beansprout01
6,778 Registered Users
Sponsored Advertisement
Sponsored Advertisement
This Space is Available
Powered by UBB.threads™ PHP Forum Software 7.7.5