Can anyone recommend good spark plugs? - 460 Ford Forum
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post #1 of 16 (permalink) Old 08-17-2009, 02:05 PM Thread Starter
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Can anyone recommend good spark plugs?

I have of course a 460 with 514 kit yielding a 520 ci. w/ flat top pistons. I'm using DOVE heads from a 69' slightly milled, oversized valves, 1.7 rockers, full roller cam. My question is could someone recommend good plugs. I can't get good info from the yahoos at the auto parts store because they did not make a 460 in a Fox body! I've been using autolite platinum plugs which seems to foul out quickly. I don't have any ideal what heat range I should be using or when I look in Jegs/ Summit for race plugs they offer two different reaches which I don't know which one I should be looking at. If someone could help me out on this I would really be greatful. I was told to use NKG V plugs but again, which ones? I don't feel like I have to spend $6-8 per plug either!

Thanks in advance.

93' LX hatch, 460 with mods and factory heads, TH400 trans, 9" w/ 3.89 spool. Best (so far!) of 10.04 @ 133 mph w/ 1.36 60'
Wanna see a low budget BBF run: (I know..the date trips me out!)

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post #2 of 16 (permalink) Old 08-17-2009, 03:51 PM
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I run autolite AR3934 on h/p cost about $4.00 ea. this is a full race plug with short tips. the heat range is the last two diggets. 34 is hot and a 32 is cold. i started at 32s and ended up at 34s

Last edited by GT Man; 08-17-2009 at 03:54 PM.
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post #3 of 16 (permalink) Old 08-17-2009, 04:27 PM Thread Starter
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Thanks man, I'll give them a try. Should I start cold and go from there to see if I need to go hotter or just get the hot plug?

I just looked them up @ advance auto. $2.79 each. FYI

93' LX hatch, 460 with mods and factory heads, TH400 trans, 9" w/ 3.89 spool. Best (so far!) of 10.04 @ 133 mph w/ 1.36 60'
Wanna see a low budget BBF run: (I know..the date trips me out!)

https://www.youtube.com/watch?v=70l4...e_gdata_player
I'm not SAYING, I'M JUST SAYING!!!

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post #4 of 16 (permalink) Old 08-17-2009, 04:33 PM
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I don't think those plugs will fit into the short 18 mm spark plug hole of the early heads unless you use some spark plug adapters available from www.garrettmachine.com.

VERY good product.

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post #5 of 16 (permalink) Old 08-17-2009, 04:44 PM
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you are wright. those are the old heads. stang 93 i have some old race plugs i ran in my doves at home. i will look at the part numbers then. they are still the autolite race plug though.
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post #6 of 16 (permalink) Old 08-17-2009, 04:47 PM
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I use Autolite 45's N/A, and 124's on spray in my D0VE heads.

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post #7 of 16 (permalink) Old 08-17-2009, 05:18 PM Thread Starter
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Quote:
Originally Posted by FourEyed Freak View Post
I use Autolite 45's N/A, and 124's on spray in my D0VE heads.
I'm home and just check what I have and yes... I'm using the AP45's but again they are the platinum. Should I use regular 45's instead of the AP45's? While I'm still working with jetting, looking for a stronger plug. Using the 3 circuit 1050 Dominator with victor jr. manifold. Power valve deletes on both sides. 88 jets in front and 93 jets in the rear. It seems okay so far as for running leaner. It has not been on an air/fuel meter yet.

Would going up towards the 124's be a better plug for me?

93' LX hatch, 460 with mods and factory heads, TH400 trans, 9" w/ 3.89 spool. Best (so far!) of 10.04 @ 133 mph w/ 1.36 60'
Wanna see a low budget BBF run: (I know..the date trips me out!)

https://www.youtube.com/watch?v=70l4...e_gdata_player
I'm not SAYING, I'M JUST SAYING!!!

Last edited by stang93mustang; 08-17-2009 at 06:14 PM.
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post #8 of 16 (permalink) Old 08-17-2009, 06:35 PM
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AR33 autolites for dove heads.

74VEGA 466 C4 6.18@110,9.77@135.66 ON PUMP GAS
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post #9 of 16 (permalink) Old 08-17-2009, 08:54 PM
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Just as with the AR3934's, (except with a shorter reach and tapered seat), the AR33 plugs with their 14 mm threads would be somewhat loose when screwing them into the 18 mm threaded plug hole of the D0VE heads lol.
Is this a South Carolina thing...?

Buy and USE the long reach small thread adapters which become a permanent part of the head; you'll be glad you did.

EDIT: There are a whole bunch of 3/4" reach, 14mm threaded, small 5/8" hex plugs to choose from and get EXACTLY what you need.

www.rmcompetition.com

R.M. Competition - The finest Custom Engine Building for any venue ... !
Selling Parts and Supplies from companies I use ... 1(586)909-1591

CUSTOM ground camshafts
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CNC porting

Last edited by rmcomprandy; 08-17-2009 at 08:59 PM.
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post #10 of 16 (permalink) Old 08-17-2009, 09:10 PM
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[quote=rmcomprandy;
Is this a South Carolina thing...?
LMAO

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post #11 of 16 (permalink) Old 08-17-2009, 09:44 PM
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Quote:
Originally Posted by rmcomprandy View Post
Just as with the AR3934's, (except with a shorter reach and tapered seat), the AR33 plugs with their 14 mm threads would be somewhat loose when screwing them into the 18 mm threaded plug hole of the D0VE heads lol.
Is this a South Carolina thing...?

Buy and USE the long reach small thread adapters which become a permanent part of the head; you'll be glad you did.

EDIT: There are a whole bunch of 3/4" reach, 14mm threaded, small 5/8" hex plugs to choose from and get EXACTLY what you need.
Check your catalog again, I just bought a set of AR33 plugs & they are 18 mm taper seat plugs.

74VEGA 466 C4 6.18@110,9.77@135.66 ON PUMP GAS
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post #12 of 16 (permalink) Old 08-17-2009, 09:50 PM
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just checked my old plugs and i ran AR33s for 4 years on h/p and on 210 shop of nos with no problems, 150-200 passes, i had 70 model doves and 460 vega runs doves also. they work good for us in S.C.

Last edited by GT Man; 08-17-2009 at 09:52 PM.
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post #13 of 16 (permalink) Old 08-17-2009, 09:52 PM Thread Starter
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Quote:
Originally Posted by rmcomprandy View Post
Just as with the AR3934's, (except with a shorter reach and tapered seat), the AR33 plugs with their 14 mm threads would be somewhat loose when screwing them into the 18 mm threaded plug hole of the D0VE heads lol.
Is this a South Carolina thing...?

Buy and USE the long reach small thread adapters which become a permanent part of the head; you'll be glad you did.

EDIT: There are a whole bunch of 3/4" reach, 14mm threaded, small 5/8" hex plugs to choose from and get EXACTLY what you need.
I did check out the site about using those adapters, it's looking like I will be investing in some here in the near future this way I can have a better selection of plugs to use. So.... with using the adapters am I looking for the longer reach plug?

93' LX hatch, 460 with mods and factory heads, TH400 trans, 9" w/ 3.89 spool. Best (so far!) of 10.04 @ 133 mph w/ 1.36 60'
Wanna see a low budget BBF run: (I know..the date trips me out!)

https://www.youtube.com/watch?v=70l4...e_gdata_player
I'm not SAYING, I'M JUST SAYING!!!

Last edited by stang93mustang; 08-17-2009 at 09:54 PM.
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post #14 of 16 (permalink) Old 08-17-2009, 09:59 PM
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My mistake ... the AR23 is the 14mm plug.

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post #15 of 16 (permalink) Old 08-17-2009, 10:03 PM
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YES ... those adapters use a 3/4" reach, gasketed, 14mm thread, 5/8" hex spark plug just like most of the aluminum heads in the marketplace use.

www.rmcompetition.com

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CUSTOM ground camshafts
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