Best Performance Spark plugs

[sprinksbeme]

I have used Champion Spark plugs forever, and been fairly satisfied but my Bronco desirves the best for it.

So you racers motorheads what do you use, and what makes them better?

 

[evil69]

I use these
http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=5

With these
http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=15

 

[Skiddy]

I use these
http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=5

With these
http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=15

those do work well and there a some more high performance parts to buy there as well;D as for me champions suck, i use ac delco

 

[greasypigeon]

I use ngk.

 

[evil69]

Is it sad I use Motorcraft for Ford and AC Delco for GM, and NGK for Jap stuff?

 

[sprinksbeme]

I use these
http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=5

With these
http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=15

LOL
Well glad I checked the rest of the stuff they sell! Some of it makes for some very expensive jokes;D

May seem like a simple part and running good has always been enough but looking for small improvements.

 

[Pa PITT]

Sorry but after all my year selling parts ...Your fords should use either ...
Champion or Motorcraft and Autolite...Chrysler use only Champion ...

 

[gjrock]

Motorcraft.OE works the best.my 2c.You have it right Evil.

 

[Broncobowsher]

For the most part the fancy douple platinum tipped plugs are great for new cars that have a very nice computer that keeps them perfectly clean and the only issue is wear. It is not uncommon htese days for a set of plugs to last the life of the car. I know they are often called 100k mile plugs, but I have seen many sets that worked great at 200k. But they are in stock, unmodified, computer controlled engines.

Now for a plug to put into a Bronco, I just use a standard plug. For one I don't expect the engine to last 100k, I didn't put that much into it. Second the tune isn't perfect. So I just use a set of off the shelf Autolites. They are one of the more affordable plugs and never had any issues with them.

 

[theshadow]

im all about the Autolites, i recently bought a 92 f150 and the PO had those bull**** double prongers installed. When I bought it he told me the coil had been getting corroded because he thought "the sparks were jumping because the plug wires touched the valve covers and were getting grounded" end quote. I pulled the plugs and all were totally nasty and one of the electrodes was eaten almost to the point where you couldnt see it. When I checked the coil it was also half-eaten. Put some Autolites in with new wires, coil, cap and rotor and shes been running great. Ive always run Autolites, the mustang guys over at www.allfordmustangs.com seem to swear by em, for what thats worth

 

[ep67bro]

All plug gurus what autolite plug should I be running in my 73 302? It is a stock bottom end with a 600 cfm edlebrock carb and performer intake. I also have a 289 that has Bosh plugs in it I have never had problems with them they were installed by the PO so I had no idea how long they have been in. This truck has a 650 cfm carb a performer intake and the bottom end is a little built. Any input?

 

[SpareParts]

I love NGK's, they are no more expensive than the standard plug and had a set go over 60,000 miles in my company truck, 96' F-150 with a 302. I have also seen the same plug in a 1500 hp 572 big block Ford with a 871 blower, with methonal injection "Big Dawg Monster Truck" and does great there too.

David

 

[TOFIC]

Well to start the discussion I absolutely swear by Bosch Platinum plus 4's
My machine just loves them!!
TOFIC

 

[blubuckaroo]

I think for a carbureted engine, the question should be what heat range rather than what brand.

 

[Broncobowsher]

All plug gurus what autolite plug should I be running in my 73 302? It is a stock bottom end with a 600 cfm edlebrock carb and performer intake. I also have a 289 that has Bosh plugs in it I have never had problems with them they were installed by the PO so I had no idea how long they have been in. This truck has a 650 cfm carb a performer intake and the bottom end is a little built. Any input?

According to the book (I have the autolite spark plug book that is as big as a phone book that good parts stores have) you should run an Autolite 45 at .035" gap. Hotter plug is a 46 and the colder plug is a 124
Since your engine is relitivly stock (you have not gone with a 12:1 compression piston or anything crazy like that) then the stock heat range should do just fine. If you are burning a bit of oil and fouling the plugs, the next range hotter may make the plugs last longer (hotter is more self cleaning) but you risk the spark plugs getting too hot and becoming glow plugs causing detonation issues.
The 45 has a long shell twin to it, the 5125 that may help in odd situations but is the same deminsions where it screws into the head. Might work for some headers? This is providing you still have the stock heads with the 18mm thread holes (use 13/16" socket).

 

[broncnaz]

Autolite (45) or motorcraft standard resistor plugs. The higher priced plugs are just that on a carbed engine. If your injected then I'd consider the platinums. Carbed engines tend to need plugs every year or so. Where EFI engines can usually go way longer I'd wouldnt go much past 50,000 but some have gone longer with no problems.

 

[72Quarterhorse]

I think for a carbureted engine, the question should be what heat range rather than what brand.

X 2 on that.

 

[justinoshea]

So it sounds like the best plugs are those that are the proper length, heat range, and gap in good condition. Boosted and nitrous applications have some additional considerations. I've pulled plugs that no longer had electrodes after part of one dragstrip pass.

I about pooped when I spent $25 on a single iridium plug for my bike! I'd need deep pockets for a set of 8!

 

[DirtDonk]

Almost always had Autolites. In fact, I even had Splitrire make my first set from Autolite cores. Best plugs I ever ran in the Bronco.
That was back when you could actually request a split-fire tip on your favorite plug brand though.

I'm going to try E3 next. Not that I'm all about plugs with fancy-schmancy ground electrodes. Most of mine have been standard Autolites (I've tried different ones in different engines ever since I saw a Bosch double tip), but I had such good luck with the Splitfires and have seen good results in other american V8's with the E3 that I thought them worth a try.

Paul