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Spark plug gap on 351w

  • Thread starter Thread starter Xzkittle01
  • Start date Start date Jan 24, 2020
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Xzkittle01

New Member
Jul 26, 2018
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West Virginia
Jan 24, 2020
#1
  • Jan 24, 2020
  • #1
I have a 1994 v6 sn95 with gt swapped t5, driveshaft and rear diff. It has a 1994 351w in it with gt40p heads. It will be running a holley carb once the carb is rebuilt. I was curious what gap my spark plugs need to be at. I was reading forms and it say a 1994 351w has 0.042- 0.046 gap but I want to make sure with the modification that is done to it since the headers are in the way of the spark plugs and it's a pain in the butt to get to the 7th cylinder plug
 

96pushrod

I think they're a little easier to get off
5 Year Member
May 15, 2018
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Jan 24, 2020
#2
  • Jan 24, 2020
  • #2
What coil are you running?
 
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Xzkittle01

New Member
Jul 26, 2018
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West Virginia
Jan 24, 2020
#3
  • Jan 24, 2020
  • #3
96pushrod said:
What coil are you running?
Click to expand...
I'm not running one. I have a hei distributor.
 
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Xzkittle01

New Member
Jul 26, 2018
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West Virginia
Jan 24, 2020
#4
  • Jan 24, 2020
  • #4
96pushrod said:
What coil are you running?
Click to expand...
And its brand new
 

96pushrod

I think they're a little easier to get off
5 Year Member
May 15, 2018
1,530
871
133
Savannah
Jan 24, 2020
#5
  • Jan 24, 2020
  • #5
You should be able to get away with .045, maybe even upwards of .050
 
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Xzkittle01

New Member
Jul 26, 2018
17
0
1
West Virginia
Jan 24, 2020
#6
  • Jan 24, 2020
  • #6
96pushrod said:
You should be able to get away with .045, maybe even upwards of .050
Click to expand...
I have them at .046 so if that doesnt work I'll go up to 5.0 with some new plugs. Thanks for the help!
 

96pushrod

I think they're a little easier to get off
5 Year Member
May 15, 2018
1,530
871
133
Savannah
Jan 25, 2020
#7
  • Jan 25, 2020
  • #7
Xzkittle01 said:
I have them at .046 so if that doesnt work I'll go up to 5.0 with some new plugs. Thanks for the help!
Click to expand...
Honestly I’d just leave them where you have them. The only time it makes a difference is if you have a huge jump in gap, which doesn’t really apply here.
 
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