what spark plugs should I run

DarkoStoj

Founding Member

Sep 4, 2002

929

13

39

Detroit

Aug 29, 2008

#1

• Aug 29, 2008

• #1

heres the combo

87 302
f303 cam
ported WW jr. heads
ported air gap intake
750 cfm double pumper
msd 6A
msd pro billet dist
taylor plug wires

world reccomends a NGK 2817 plug which is a non resistor non projected tip plug. I put in a set of the NGK ur4's which is a resistor projected tip plug. What do you guys think?

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

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south louisiana

Aug 29, 2008

#2

• Aug 29, 2008

• #2

Don't know, I only run Autolites

 

xoxbxfx

Founding Member

May 9, 2001

3,959

0

0

Southlake, TX

Aug 29, 2008

#3

• Aug 29, 2008

• #3

D.Hearne said:

Don't know, I only run Autolites

Click to expand...

yup...I always stick with Autolite.

 

R

ron67fb

Founding Member

Aug 3, 2001

1,117

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36

SF Bay area, CA

Aug 29, 2008

#4

• Aug 29, 2008

• #4

X recommends Y so I put in Z. What do you guys think?

I used whatever NGK replacement there was and I don't have the receipt in front of me. In the end I don't think any of it really matters as long as it's an acceptable replacement but if World recommends something specific for their heads and you purposely ignored their suggestion, why are you asking here? Did you contact them about it?

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

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south louisiana

Aug 29, 2008

#5

• Aug 29, 2008

• #5

As far as resistor vs non resistor, only your stereo/radio cares about that.

 

DarkoStoj

Founding Member

Sep 4, 2002

929

13

39

Detroit

Aug 29, 2008

#6

• Aug 29, 2008

• #6

ron67fb said:

X recommends Y so I put in Z. What do you guys think?

I used whatever NGK replacement there was and I don't have the receipt in front of me. In the end I don't think any of it really matters as long as it's an acceptable replacement but if World recommends something specific for their heads and you purposely ignored their suggestion, why are you asking here? Did you contact them about it?

Click to expand...

i did and all they said was run a .460 reach plug. I asked about the projected vs. non-projected tips, heat ranges, and they didnt give me any info

 

R

ron67fb

Founding Member

Aug 3, 2001

1,117

0

36

SF Bay area, CA

Aug 29, 2008

#7

• Aug 29, 2008

• #7

Hm well I'd just do what they say, unless your piston/head combo says otherwise. Projected tips generally run hotter and what's the rule of thumb again? Better to go too cold than hot, isn't it? I admit I don't remember; I drive a cruiser so I just buy stock replacement plugs.