Re: Spark plug question for my 440
[Re: TinCuda]
#1121568
11/26/11 09:04 AM
11/26/11 09:04 AM
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Joined: Jan 2003
Posts: 21,085 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,085
Niles , Ohio
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I ran them a few years back.Never saw any gains for the bucks.Went back to Autolites.Now with the aluminum heads I run NGKs.Rocky
Chrysler Firepower
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Re: Spark plug question for my 440
[Re: BB73Challenger]
#1121573
11/27/11 09:23 PM
11/27/11 09:23 PM
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Joined: Feb 2004
Posts: 7,196 Harrisburg, Pa.
screamindriver
master
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master
Joined: Feb 2004
Posts: 7,196
Harrisburg, Pa.
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Quote:
Please forgive a novice question and not to hi-jack but Mancini's page is great but I see they list many plugs for the different comp ratios...
What is the difference between these plugs? Does a "street car" not see much gain from this as I have always just used a standard auto parts store suggested replacement. Or am I just not well informed?
The basic difference is the heat range{length of the porcelin tip}...The over-the-counter plugs are fine for most street engines..It really comes down to a matter of preference...I've always used a champion plug {like the RJ12YCs,it's a "shorty" too} in a big block and have had good luck...Autolite,Accell,NKG all get good reviews and some swear by/hate them because of their own experiences... The general rule is start with a factory type plug for the application and see how the engine likes it...If it's burning clean and lasts thousands of miles there's no reason to change it...There's no magical plug that'll give huge gains over a clean running set-up.... Now,highly modified engines may need a plug with a different heat range depending on many factors including compression,exhaust,carb intake, etc...Plug reading is a real science and some are very good at it... In my experience a good number of guys seem to have other engine/tuning issues and want to blame it on the plug and start swapping heat ranges and/or brands labeling whatever plug brand they tried as "junk".. ....
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Re: Spark plug question for my 440
[Re: therocks]
#1121574
11/27/11 09:37 PM
11/27/11 09:37 PM
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Joined: Jul 2004
Posts: 12,812 Tulsa, Oklahoma
Wagonmaster
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 12,812
Tulsa, Oklahoma
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Quote:
I ran them a few years back.Never saw any gains for the bucks.Went back to Autolites.Now with the aluminum heads I run NGKs.Rocky
I still run Autolites. In everything.
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Re: Spark plug question for my 440
[Re: therocks]
#1121577
11/28/11 02:00 AM
11/28/11 02:00 AM
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Joined: Aug 2011
Posts: 297 Oklahoma
TinCuda
OP
enthusiast
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OP
enthusiast
Joined: Aug 2011
Posts: 297
Oklahoma
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Does autolite or NGK have shorty spark plugs for use with my TTI headers? Anyone have the part numbers?
The real question that I had is are the Accel plugs good or bad plugs.
If the Accel plugs are acceptable quality, I am just going to get them.
.,
(O O {]{]{]||[}[}[} O O)
1971 Plymouth 'Cuda 440-6
{||O||}
2000 Yamaha V-Max
(O O [========= SRT] O O)
2011 Dodge Challenger SRT 392
.
Making as big as a carbon footprint as I can!!!
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Re: Spark plug question for my 440
[Re: TinCuda]
#1121579
11/28/11 04:25 AM
11/28/11 04:25 AM
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Joined: Aug 2003
Posts: 43,307 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,307
Bend,OR USA
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Quote:
I have a 440 built to a 512 stroker, 906 heads, TTI 1 7/8 headers.
I am looking at getting new spark plugs. Are these any good?
Accel - Header Plug
Part # 8197 / 437s
Thanks
.,
I think that the 437 is probally a hot plug, what compression ratio are you making and what grade of gasoline are you using?I have used the Accel 137, 134 and 132 in a iron headed BB similar to yours (440 block 4.25 strokex4.375 bore with ported big valve 906 heads)with 9.25 to 1 compression using CA pump swill, it ran fine on the dyno but I did't get the car running until we moved to Oregon on the summer of 2005. It, the motor, seemed to like the 134 best Oregon did not have Ethanol in there gas back then. I swithed the heads that winter to a set of Eddy RPM aluminums and I had switch the plugs to longer reach plugs,Autolite AR3911 and AR 3910 I don't think Accel offers more than one shorty spark plug part number
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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