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post #1 of 8 (permalink) Old 08-14-2006, 09:39 PM Thread Starter
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spark plugs

What spark plug should I start with in my mild 460?

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post #2 of 8 (permalink) Old 08-15-2006, 11:07 AM
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Re: spark plugs

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Originally Posted by fastlane
What spark plug should I start with in my mild 460?
Dude we are going to need a LOT more information than what you have posted :lol:

Like type of heads, compression, cam, intended usage and the list goes on.

Some useful links and you may try searching the forum "spark plugs".

http://www.autolite.com/

http://www.autolite.com/pdf/RacingCrossRef.pdf


Good Luck



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post #3 of 8 (permalink) Old 08-18-2006, 06:33 AM Thread Starter
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Dude! Factory heads probably 8/9:1 compression I would guess. I believe it has flat top pistons so the compression might be a little higher. The cam is around 500 lift. I didn't put this engine together so that's about all I know. It has a Victor Jr. intake and a 950 Holley HP. Going in a 66 Fairlane for mostly street driving, maybe a pass or two at the drag strip. Sorry, I'm new to the engine scene. Thanks.

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post #4 of 8 (permalink) Old 08-18-2006, 07:04 AM
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When you say 'Factory Heads', do you know the casting number? Like DOVE-C or D20E or DOOE?

If it's a DOVE head then some regular old autolite 45's should work fine for you application however if you decide to bump the compression up or run nitrous then you need to look into the AR33's or a similar type racing plug.

If the heads are stock and the compression is low then that BIG intake is going to kill your torque.......... basically it's gonna be a DOG and seem like it has very little power.



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post #5 of 8 (permalink) Old 08-18-2006, 08:20 AM Thread Starter
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D3VE-A2A is the head casting, however, they have been ported. I have plans foe Edlebbock aluminum heads and nitrous. I realize the issues with that intake, but it the engine was a great deal and I couldn't pass it up. I do appreciate your advice.

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post #6 of 8 (permalink) Old 08-18-2006, 10:45 AM
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Do the D3VE heads take 18mm plugs? If so then just get a set of autolite 45's and cruise on.............



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post #7 of 8 (permalink) Old 08-18-2006, 12:32 PM Thread Starter
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Thank you. The car is relativly light, hopefully the loss of a little torque with that intake won't hurt too bad. I have a lot to learn!

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post #8 of 8 (permalink) Old 08-20-2006, 08:18 AM
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D3VE heads use the small plugs.
I use Motorcraft AF32C, which I also use in my 351C. Bought 600 of them on eBay Australia last year for 40c each incl postage. No wonder I'm using them!

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