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. 
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
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....
