autolites or Motorcraft plugs?

88fivepointoh · 07-16-2003, 10:57 AM

i was wondering what is prefered between plugs? motorcrafts or autolites?I was running the AC DELCO rapid fires and I burn them up within the first hard run i make. I am going to the track friday and want to make a good showing. also is the gap .48 thousandths?

USMC302 · 07-16-2003, 11:12 AM

Ever heard of Denso iridium plugs? Saw an advertisement in MM&FF, gonna try them with my new 331. But until then, I run the autolites with my setup and they have lasted well over 50 passes with no sign of wear or weakness.

bigred90gt · 07-16-2003, 11:59 AM

I use NGK plugs and they run great for me. I have made many, many passes on a set and no problems. I run a MSD6AL and blaster coil with accel cap & rotor and accel 8mm wires. I use them in my car and my truck.

88fivepointoh · 07-16-2003, 12:14 PM

what number autolites do you run?

USMC302 · 07-16-2003, 01:36 PM

well being out here in the middle east I can't remember exactly at this point but, they are 23XX somethings, they are the longer thread ones though to fit my TW heads, so they may not work for everyone. Good luck

07-16-2003, 01:51 PM

Quote:

Originally posted by 88fivepointoh
also is the gap .48 thousandths?

I believe the stock spark plug gap on a '87-'93 should be .054.

88fivepointoh · 07-16-2003, 03:01 PM

what number is it for the autolites?

USMC302 · 07-19-2003, 04:34 AM

As you were, they are 3924's.

07-16-2003, 10:57 AM	#1
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	autolites or Motorcraft plugs? i was wondering what is prefered between plugs? motorcrafts or autolites?I was running the AC DELCO rapid fires and I burn them up within the first hard run i make. I am going to the track friday and want to make a good showing. also is the gap .48 thousandths?

07-16-2003, 11:12 AM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Ever heard of Denso iridium plugs? Saw an advertisement in MM&FF, gonna try them with my new 331. But until then, I run the autolites with my setup and they have lasted well over 50 passes with no sign of wear or weakness. __________________

07-16-2003, 11:59 AM	#3
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	I use NGK plugs and they run great for me. I have made many, many passes on a set and no problems. I run a MSD6AL and blaster coil with accel cap & rotor and accel 8mm wires. I use them in my car and my truck. __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

07-16-2003, 01:36 PM	#5
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	well being out here in the middle east I can't remember exactly at this point but, they are 23XX somethings, they are the longer thread ones though to fit my TW heads, so they may not work for everyone. Good luck __________________

07-19-2003, 04:34 AM	#8
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	As you were, they are 3924's. __________________

07-16-2003, 12:14 PM	#4
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	what number autolites do you run?

07-16-2003, 03:01 PM	#7
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	what number is it for the autolites?

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