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Spark plug Q's #1022898
06/29/11 06:09 PM
06/29/11 06:09 PM
Joined: Aug 2009
Posts: 2,076
Mooresburg, Tn
'
'72CudaRacer Offline OP
top fuel
'72CudaRacer  Offline OP
top fuel
'

Joined: Aug 2009
Posts: 2,076
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 06:19 PM
06/29/11 06:19 PM
Joined: Jan 2004
Posts: 3,840
Central Missouri Fort Leonard...
mopar65 Offline
master
mopar65  Offline
master

Joined: Jan 2004
Posts: 3,840
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 06:20 PM
06/29/11 06:20 PM
Joined: Jan 2004
Posts: 3,840
Central Missouri Fort Leonard...
mopar65 Offline
master
mopar65  Offline
master

Joined: Jan 2004
Posts: 3,840
Central Missouri Fort Leonard...
ok let me try it again.mopar65

6705832-700.jpg (1568 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 06:24 PM
06/29/11 06:24 PM
Joined: Jan 2004
Posts: 3,840
Central Missouri Fort Leonard...
mopar65 Offline
master
mopar65  Offline
master

Joined: Jan 2004
Posts: 3,840
Central Missouri Fort Leonard...
here is the spark plug conversion chart.Mopar65

6705837-701.jpg (2513 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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