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Spark plug Q's #1022898 06/29/11 07:09 PM 06/29/11 07:09 PM
Joined: Aug 2009 Posts: 2,049 Mooresburg, Tn '72CudaRacer OP top fuel
'72CudaRacer OP top fuel Joined: Aug 2009 Posts: 2,049 Mooresburg, Tn	Any one tell me what the difference is in Autolite racing plugs AR3910 and AR3924? Heat range maybe? I've been running a Champion RC12YC. The engine is a 440, 13.5:1, Stealth heads, MP .590 solid cam and VP 110 fuel, race only. Thanks, Brian

Re: Spark plug Q's [Re: '72CudaRacer] #1022899 06/29/11 07:19 PM 06/29/11 07:19 PM
Joined: Jan 2004 Posts: 3,838 Central Missouri Fort Leonard... mopar65 master
mopar65 master Joined: Jan 2004 Posts: 3,838 Central Missouri Fort Leonard...	here is a autolite spark pkug heat range chart i found on line on day.mopar65 3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops

Re: Spark plug Q's [Re: mopar65] #1022900 06/29/11 07:20 PM 06/29/11 07:20 PM
Joined: Jan 2004 Posts: 3,838 Central Missouri Fort Leonard... mopar65 master
mopar65 master Joined: Jan 2004 Posts: 3,838 Central Missouri Fort Leonard...	ok let me try it again.mopar65 6705832-700.jpg (1552 downloads) 3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops

Re: Spark plug Q's [Re: mopar65] #1022901 06/29/11 07:24 PM 06/29/11 07:24 PM
Joined: Jan 2004 Posts: 3,838 Central Missouri Fort Leonard... mopar65 master
mopar65 master Joined: Jan 2004 Posts: 3,838 Central Missouri Fort Leonard...	here is the spark plug conversion chart.Mopar65 6705837-701.jpg (2476 downloads) 3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops

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