Spark plugs for a460 heads

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Spark plugs for a460 heads

Post  tconnection on December 21st 2012, 1:17 am

Which plug for n/a 14;1cr 580ci a460 headed motor?
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Re: Spark plugs for a460 heads

Post  cool40 on December 21st 2012, 1:41 am

NGK-8 santa
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Re: Spark plugs for a460 heads

Post  c.evans on December 21st 2012, 1:46 am

Or an Autolite AR-3934

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Re: Spark plugs for a460 heads

Post  tconnection on December 21st 2012, 2:28 am

Thanks alot men. Im bout ready to put some fuel and spark to it.

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Re: Spark plugs for a460 heads

Post  tconnection on January 2nd 2013, 3:08 pm

i GOT THE NGK-8. What gap should i go with?
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Re: Spark plugs for a460 heads

Post  kim on January 2nd 2013, 3:36 pm

what ignition system? What compression? What type of fuel.

Ideally, the widest gap you can without having spark blow out.

That said, with 18-1 compression, MSD 7al-3 and propower coil, anything larger .026 and I have a hard time keeping em sparking.

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Re: Spark plugs for a460 heads

Post  c.evans on January 2nd 2013, 4:47 pm

kim wrote:what ignition system? What compression? What type of fuel.

Ideally, the widest gap you can without having spark blow out.

That said, with 18-1 compression, MSD 7al-3 and propower coil, anything larger .026 and I have a hard time keeping em sparking.

Hmmmnnn,,,,with 18:1 compression you don't need a spark plug. They're a diesel Exclamation Laughing

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Re: Spark plugs for a460 heads

Post  kim on January 2nd 2013, 7:25 pm

Luckly the cam is so long in duration, cranking compression is pitiful, and without at least 20 degrees advance, it wont even start.

Locked out at 32 on alcohol, or 34 on gas, it does it just fine.

If I ever do over, lots of things will be differnt.

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Re: Spark plugs for a460 heads

Post  tconnection on January 3rd 2013, 12:07 am

Comp., 14:1, ignition is a crane hi6, msd distributor, i guess 114 octane. And would this hi6 be ok to just start the engine up and seat the rings?
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Re: Spark plugs for a460 heads

Post  c.evans on January 3rd 2013, 12:13 am

tconnection wrote:Comp., 14:1, ignition is a crane hi6, msd distributor, i guess 114 octane. And would this hi6 be ok to just start the engine up and seat the rings?
Thanks

Heck yes!

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Re: Spark plugs for a460 heads

Post  Lem Evans on January 3rd 2013, 12:15 am

tconnection wrote:Comp., 14:1, ignition is a crane hi6, msd distributor, i guess 114 octane. And would this hi6 be ok to just start the engine up and seat the rings?
Thanks

Set the gap at .028"ish and go have fun Very Happy

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Re: Spark plugs for a460 heads

Post  tconnection on January 3rd 2013, 12:40 am

CHECK!
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