What plugs for gt40 heads?

Reply Subscribe

Thread Tools

Search this Thread

08-30-2009, 07:11 PM

AntiRiceRacing

2nd Gear Member

Thread Starter

Join Date: Apr 2009

Location: Illinois

Posts: 422

What plugs for gt40 heads?

Well i just bought a new 4 eye, and i need to know what plugs gt40's like, i went to the auto parts today with the plugs it has and they couldnt find anything that would match it? Not sure what model the heads are or if they are gt40's for sure, how can i check? The do have a different plug angle from my hatch with e7's...

08-30-2009, 08:16 PM

AdderMk2

Banned

Join Date: Dec 2005

Location: Lil' Rhody

Posts: 22,376

autolite 764's

and if the part store couldnt figure out the plugs for a 93-95 cobra, 5.8l lightning, or 96-01 v8 exploder.... you need to find a new place to go

08-30-2009, 10:28 PM

justintx75

Join Date: Feb 2008

Location: TEXAS

Posts: 36

http://forums.corral.net/forums/show....php?t=1034305

08-31-2009, 07:11 AM

AntiRiceRacing

2nd Gear Member

Thread Starter

Join Date: Apr 2009

Location: Illinois

Posts: 422

Quote:

Originally Posted by AdderMk2

autolite 764's

and if the part store couldnt figure out the plugs for a 93-95 cobra, 5.8l lightning, or 96-01 v8 exploder.... you need to find a new place to go

I think thats whats in their now. Autozone never knew what they were doing around here.

08-31-2009, 05:43 PM

stang8689

6th Gear Member

Join Date: Jan 2007

Location: Milford, Delaware

Posts: 5,464

yeah i use 764s on mine the number should of been on there

08-31-2009, 05:49 PM

87Stallion

3rd Gear Member

Join Date: Dec 2007

Location: ALberta

Posts: 630

I run Auotlite 765's in mine. I was using 104's but thats too cold of a plug unless you are running nitrous

08-31-2009, 05:53 PM

87Stallion

3rd Gear Member

Join Date: Dec 2007

Location: ALberta

Posts: 630

GT40 Heads:
AUTOLITE
stock--765 (Heat Range - 5) [14mm, .708 Reach, 5/8" Hex]
1 step colder--764 (4) or 104 (4) [14mm, .708 Reach, 5/8" Hex]**
2 step colder--103 (3) [14mm, .708 Reach, 5/8" Hex]**
-----AR473 (3) [*recessed tip, racing plug]
-----AR472 (2) [*recessed tip, racing plug]