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need spark plug recomendations
Posted: Tue Sep 09, 2008 9:40 pm
by the big edbosky
okay so i need some help on choosing my spark plugs. i have a sbf 331 w/11:1 comp. using 110 octane fuel w/ 40deg. of timing. the car has run well set up like this. with it being like so i am using ngk v-power plugs part number r5671a-9. which is equivqlent to autolite ar3933.
i am only looking to spary a 100 shot at top end seeing as how it's only a factory stock block and i am close to running out of rpm (4:30 gears and 28" tires)
so with that being said what would you guys "in the know" recomend. should i go colder or no?
also not to ask to much but with the car running n.a., are the plugs i am currently using a good heat range??
thanks guys
Re: need spark plug recomendations
Posted: Wed Sep 10, 2008 12:50 pm
by wazslow
I would run 8's on the motor and 9's should be fine on only a 100 shot.
Re: need spark plug recomendations
Posted: Wed Sep 10, 2008 8:34 pm
by the big edbosky
cool sounds good to me. kinda what i was thinking judging by the heat range reference chart i found.
thanks.
by the way. by going to the # 8's while running n.a. will i see any difference do you think?
Re: need spark plug recomendations
Posted: Tue Jan 20, 2009 9:26 pm
by adamsvega
it may keep it clean cold!
Re: need spark plug recomendations
Posted: Sun Jan 25, 2009 3:22 pm
by mrhockey
wazslow wrote:I would run 8's on the motor and 9's should be fine on only a 100 shot.
I agree. We normally run -10s with our set up which is a little bit more than you are spraying,
, and I run -9s on the motor. I have actually run -8 at an NMCA True Street event loaded for bear and didn't hurt anything, but I wouldn't recommend it. I am glad I had them in though because I don't think I would have made it through the cruise with the colder plugs.
Re: need spark plug recomendations
Posted: Tue Jan 27, 2009 12:42 am
by cmracing
I run the -9's normally, will shoot up to 125hp with no problems.
I have run the -10's on motor, but they really don't get clean enough for my liking. On the juice they clean right up though!
Never tried -8's. Motor has EFI so dirty plugs are never a problem for me.
Re: need spark plug recomendations
Posted: Tue Feb 24, 2009 3:54 pm
by mike
I run 8's on the 200 shot, no problems here.
Re: need spark plug recomendations
Posted: Tue Feb 24, 2009 3:56 pm
by mike
the big edbosky wrote:okay so i need some help on choosing my spark plugs. i have a sbf 331 w/11:1 comp. using 110 octane fuel w/ 40deg. of timing. the car has run well set up like this. with it being like so i am using ngk v-power plugs part number r5671a-9. which is equivqlent to autolite ar3933.
i am only looking to spary a 100 shot at top end seeing as how it's only a factory stock block and i am close to running out of rpm (4:30 gears and 28" tires)
so with that being said what would you guys "in the know" recomend. should i go colder or no?
also not to ask to much but with the car running n.a., are the plugs i am currently using a good heat range??
thanks guys
I can't help but think that is alot of timing for a SBF. I had a 347 with 11:1 on pump gas and anything over 33 degrees it lost power. Guess it's your race gas.
Re: need spark plug recomendations
Posted: Fri Feb 27, 2009 3:45 pm
by wazslow
mike wrote:I run 8's on the 200 shot, no problems here.
I would run -9's on the spray if it were me
Re: need spark plug recomendations
Posted: Thu Mar 05, 2009 11:04 pm
by mike
wazslow wrote:mike wrote:I run 8's on the 200 shot, no problems here.
I would run -9's on the spray if it were me
Not for a 200 shot. Stick to boost
Re: need spark plug recomendations
Posted: Fri Mar 06, 2009 10:30 am
by wazslow
mike wrote:wazslow wrote:mike wrote:I run 8's on the 200 shot, no problems here.
I would run -9's on the spray if it were me
Not for a 200 shot. Stick to boost
Your wrong. You should be running a -9. And I will stick to boost, you stick to watching my taillights disappear!
