Spark plugs...
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Plugs should be tightened according to torque specs. I've never had a problem running any plug that is designed for the engine it is used in. I've always heard people say this or that plug is no good, but never believed it. Practically all major plug manufacturers, including Bosch, have been in business for around 100 years and common sense would dictate that they know what they are doing, IMO, or they would not be around. The only exception to this would probably be the Split Fire plugs of a few years ago. (I'm sure these comments are going to open Pandora's Box, but again, these are just my opinions).
Last edited by Jud Chapin; Nov 14, 2006 at 05:44 AM.
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Originally Posted by Jud Chapin
Plugs should be tightened according to torque specs. I've never had a problem running any plug that is designed for the engine it is used in. I've always heard people say this or that plug is no good, but never believe it. Practically all major plug manufacturers, including Bosch, have been in business for around 100 years and common sense would dictate that they know what they are doing, IMO, or they would not be around. The only exception to this would probably be the Spit Fire plugs of a few years ago. (I'm sure these comments are going to open Pandora's Box, but again, these are just my opinions).
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
I've personally had good results with autolites, also. Accel plugs work well, too, though. If you have standard SBC heads and headers, the accel shorties fit the best. I've found that with vortec heads, because of the plug placement and angles, standard length plugs don't seem to have any problems with touching headers. 
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Pro
Joined: Sep 2006
Posts: 551
Likes: 2
From: Clovis CA
If you are running a Big motor, don't use platinum plugs, they will foul faster due to the rich mix. Platinums are a harder surface and do not clean off carbon. In a later motor they work fine, IMO the NGK v-groove are the best....
