540 bbc spark plugs
#1
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Join Date: Jul 2007
Posts: 21
540 bbc spark plugs
To all that can help, I am running a 540 bbc on the street . Compression is 9:6.1 flat top ,Cam is a solid roller isky .313dur. int. [email protected] .730 lift cam is degreed in at 106.375 and valve to piston clearance is .097. Heads are brodix bb-2 plus and intake is hv 2000 , heads have been flowed and mild port work. They flow on the intake at .700 lift 377 exh.277 carb is a quick fuel950 p series mech. I am currently using autolite #3924 plug,the ground strap heat mark is in the centered from the electrode tip to the middle of the ground strap is this showing the correct range? And the #1 and#2 cylinders are showing alittle more richness than all the other plugs. What is causing theses cylinders to run diferently.
#2
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Join Date: Jan 2005
Posts: 336
as for plugs, alot of people run ngk vpower plugs,good value easy to read,especially sprayed motors...call your head manufacturer they will know best ngk vpower...
the fronts are rich,well the middle 4 will be leanest, usually the rear two are fattest cause of g forces when launching...so what gives with the fronts,,, dont have a clue
the fronts are rich,well the middle 4 will be leanest, usually the rear two are fattest cause of g forces when launching...so what gives with the fronts,,, dont have a clue
#4
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Join Date: May 2006
Posts: 2,044
X2
NGK V power #8 heat range.
On a side note:
I used to get these plugs from the napa warehouse here in Memphis, always in stock and only 1.99 a pop - no brainer right?
I called the other morning to get me a set.
Nope, no longer stocked them.
Said I would have to come in and pre-pay to order them and then pay $8 for shipping :shock: Thought that was pretty shitty of them.
Called O-Riely's, said they didnt stock them but could have them in by noon.
Price> 1.99
I told them, they just got a new customer.
Might wanna buy some O-riely stock guys...lol
Cp
NGK V power #8 heat range.
On a side note:
I used to get these plugs from the napa warehouse here in Memphis, always in stock and only 1.99 a pop - no brainer right?
I called the other morning to get me a set.
Nope, no longer stocked them.
Said I would have to come in and pre-pay to order them and then pay $8 for shipping :shock: Thought that was pretty shitty of them.
Called O-Riely's, said they didnt stock them but could have them in by noon.
Price> 1.99
I told them, they just got a new customer.
Might wanna buy some O-riely stock guys...lol
Cp
#6
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EXPERT BUILDER
Join Date: Jan 2005
Posts: 336
call your head manufacturer for the specific size plug, then everyone is gonna have their own favorite
i run 5671-7 on motor 8s on a small shot nitrous, and 9's for up to a 275 shot, ill never run anyother plug(mostlikely)
i run 5671-7 on motor 8s on a small shot nitrous, and 9's for up to a 275 shot, ill never run anyother plug(mostlikely)
#8
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Join Date: May 2006
Posts: 2,044
Originally Posted by hammertime
Get a champion or stay with the autolite, there was a loss in HP just putting the NGK;s in mine ..
seen more ngk's cause a miss then any plug
seen more ngk's cause a miss then any plug
In fact the plugs I have in mine now I put in last spring, still popping off perfect, just wanted a fresh set.
I've heard good things about autolites too, only thing I'd put a champion in is, my lawn mower :shock:
#9
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Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Originally Posted by cepx111
Originally Posted by hammertime
Get a champion or stay with the autolite, there was a loss in HP just putting the NGK;s in mine ..
seen more ngk's cause a miss then any plug
seen more ngk's cause a miss then any plug
In fact the plugs I have in mine now I put in last spring, still popping off perfect, just wanted a fresh set.
I've heard good things about autolites too, only thing I'd put a champion in is, my lawn mower :shock: