Spark Plug recommendations

[Nicoleb3x3]

Does anyone have recommendations for 5.0 n/a with AFR 165 heads and cobra intake and stock injectors? Also; 90mm mass air if that matters and also shorty unequal headers. No aftermarket ignition box, but I do have a fireball coil and summit billet distributor.

This is for my engine I just rebuilt in my 93.

looking for what the gap should be and if anyone has a recommended brand/part #.

 

[Gearbanger 101]

The stock Motorcraft AWSF32C's should be just fine for your application. The stock gap is somewhere in the .048-.052 range if I'm not mistaken?

 

[STP72]

nothing but good look with OEM ford and autolites

 

[Nicoleb3x3]

makes sense to me

thx

 

[NotchAbove]

TFS, Edelbrock, and AFR Heads:
[14mm, 3/4" Reach, 5/8" Hex, gasket seat]
AUTOLITE
1 step colder--3924 (4) [*recommended starting point]
2 step colder--3923 (3)
-----AR3933 (3) [*recessed tip, racing plug]
-----AR3932 (2) [*recessed tip, racing plug]
-----AR3931 (1) [*recessed tip, racing plug]

NGK
1 step colder--(FR5) 3686 (5) [*recommended starting point]
2 step colder--(BKR6EY) 3696 (6)
-----(R5671A-8) 4554 (8) [*recessed tip, racing plug]
-----(R5671A-9) 5238 (9) [*recessed tip, racing plug]
-----(R5671A-10) 5820 (10) [*recessed tip, racing plug]

MOTORCRAFT
1 step colder--AWSF22C
2 step colder--AWSF32C

 

[Mustang5L5]

Stock gap is 0.052 - 0.056"

 

[Gearbanger 101]

AUTOLITE
1 step colder--3924 (4) [*recommended starting point]
2 step colder--3923 (


MOTORCRAFT
1 step colder--AWSF22C
2 step colder--AWSF32C

This info is incorrect.

The Autolite plug heat ranges are as follows
3924 stock heat range
3923 is 1 heat range colder
3922 is 2 heat ranges colder

The Motorcraft plug heat rangers are as follows
AWSF-32C is the stock heat range in a copper plug
AWSF-22C is one heat range colder and
AWSF-12C is two heat ranges colder