Cannon Fodder

Fox Mustang: Next Purchase

586 posts in this topic

Posted (edited)

 

 

On 5/23/2015 at 7:45 PM, Cannon Fodder said:

Reference:

Stock E7 heads:
AUTOLITE
stock--stock 25 (5) [14m, .460 Reach, 5/8" Hex]
1 step colder--24 (4) [14m, .460 Reach, 5/8" Hex]
2 step colder--23 (3) [14m, .460 Reach, 5/8" Hex]
-----AR133 (3) [*recessed tip, racing plug]
-----AR132 (2) [*recessed tip, racing plug]
-----AR131 (1) [*recessed tip, racing plug]

NGK
stock--(UR45) 6945 (Heat Range - 4) [14m, .460 Reach, 5/8" Hex]
1 step colder--(UR55) 2248 (5) [14m, .460 Reach, 5/8" Hex]
2 step colder--(UR6) 7773 (6) [14m, .460 Reach, 5/8" Hex]
-----(R5673-8) 3249 (8) [*recessed tip, racing plug]
-----(R5673-9) 3442 (9) [*recessed tip, racing plug]
-----(R5673-10) 4050 (10) [*recessed tip, racing plug]

 

Should I go with a NGK UR55 or an AutoLight 24.

The UR55 looks to be out of stock though.

 

 

Edited by Cannon Fodder

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UR45s is what I had in it.  Amazon has the UR55s listed at $5 a plug......

Wonder what the parts houses have or can get, Summit show 8/23 and Jegs 8/15.

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Post a picture of the plug you had in it.  I would have guessed a 6 heat range would have been better.

A picture of the ground strap would show.

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I can just barely tell on that photo, but you should stick with that plug.  Either the timing is extremely low or it just doesn't need a colder plug.

You weren't changing the crank pulley were you?

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Right now, no, I don't think it would be much of a point with the intake/head/block setup.

I think I had them gapped at 32 or 35 thou after I did the water pump, I will check them later.

I still have to figure out where I'm putting the HI-6 and for some reason I can't find my TRC and MAP sensor to it.  Not that I need it but I though I had it all together. $200 worth of parts that have disappeared in the garage. :lol:

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