Dumb sparkplug question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**slepysal** · 03-19-2008, 01:23 AM

Ok so here is my Dumb question of the day: I have a 73 350 /350 with a Q-jet4bbl.,and it has electronic ingition.
What spark plug should I be running and at what gap?
I know lame but ........
thanks in advance

Malo83 · 03-19-2008, 02:03 AM

Stock probably AC R45TS gapped at 45.
I prefer AC Rapidfires #2's gapped at 50 with a HYPERTECH Super Coil

**old Rusty C10** · 03-19-2008, 02:25 AM

on a stock GM engine use stock GM plugs known as AC Delco R45TS gapped at 45

gchemist · 03-19-2008, 02:52 AM

NGK's at 45

**slepysal** · 03-19-2008, 02:58 AM

Thanks Malo and Rusty !!! W hat part # for ngk ?

gchemist · 03-19-2008, 04:28 AM

You can buy several versions.
http://www.ngksparkplugs.com/part_fi..._suv/index.asp

I use the V power on my ZZ4 and 4.3 Jimmy.

03-19-2008, 01:23 AM	#1
slepysal Registered User Join Date: Oct 2006 Location: San Jose NOR*CAL Posts: 3,080	Dumb sparkplug question Ok so here is my Dumb question of the day: I have a 73 350 /350 with a Q-jet4bbl.,and it has electronic ingition. What spark plug should I be running and at what gap? I know lame but ........ thanks in advance __________________ 1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... " Last edited by slepysal; 03-19-2008 at 01:23 AM.

03-19-2008, 02:25 AM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: Dumb sparkplug question on a stock GM engine use stock GM plugs known as AC Delco R45TS gapped at 45 __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! Last edited by old Rusty C10; 03-19-2008 at 02:26 AM.

03-19-2008, 02:52 AM	#4
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Dumb sparkplug question NGK's at 45 __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

03-19-2008, 02:58 AM	#5
slepysal Registered User Join Date: Oct 2006 Location: San Jose NOR*CAL Posts: 3,080	Re: Dumb sparkplug question Thanks Malo and Rusty !!! W hat part # for ngk ? __________________ 1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... " Last edited by slepysal; 03-19-2008 at 02:58 AM.

03-19-2008, 04:28 AM	#6
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Dumb sparkplug question You can buy several versions. http://www.ngksparkplugs.com/part_fi..._suv/index.asp I use the V power on my ZZ4 and 4.3 Jimmy.

03-19-2008, 02:03 AM	#2
Malo83 Cruzzzn' Vet Join Date: Jan 2005 Location: Porterville,Ca. Posts: 1,918	Re: Dumb sparkplug question Stock probably AC R45TS gapped at 45. I prefer AC Rapidfires #2's gapped at 50 with a HYPERTECH Super Coil



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