Colder Plugs?
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You'll have to go there and hope for the best. 
It's hard to tell you the difference because every company uses different part #s for their plugs. Some use the 2nd digit, some use the 3rd, etc.
Try a local parts store, or a GM dealer. The 'box stores' like AutoZone and Super Trax aren't exactly flourishing with knowledgeable staff.
BTW, why do you think you need colder plugs?
R U GETN NAUS?
It's hard to tell you the difference because every company uses different part #s for their plugs. Some use the 2nd digit, some use the 3rd, etc.
Try a local parts store, or a GM dealer. The 'box stores' like AutoZone and Super Trax aren't exactly flourishing with knowledgeable staff.
BTW, why do you think you need colder plugs?
R U GETN NAUS?
Thread Starter
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Joined: Nov 2002
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Originally posted by AJ_92RS
You'll have to go there and hope for the best.
It's hard to tell you the difference because every company uses different part #s for their plugs. Some use the 2nd digit, some use the 3rd, etc.
Try a local parts store, or a GM dealer. The 'box stores' like AutoZone and Super Trax aren't exactly flourishing with knowledgeable staff.
BTW, why do you think you need colder plugs?
R U GETN NAUS?
You'll have to go there and hope for the best.
It's hard to tell you the difference because every company uses different part #s for their plugs. Some use the 2nd digit, some use the 3rd, etc.
Try a local parts store, or a GM dealer. The 'box stores' like AutoZone and Super Trax aren't exactly flourishing with knowledgeable staff.
BTW, why do you think you need colder plugs?
R U GETN NAUS?
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From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
It's as easy as knowing how your manufacturer of choice specs heat ranges. For example, with AC plugs for the standard iron heads on our car you'll have something like an R43TS. '43' is the heat range. Higher numbers are hotter, lower numbers are cooler.
With only a 100shot plug heat rage shouldn't be too big of a deal i would think. As long as you aren't running some kind of gimmick plug anyway. If you do a lot of short trip driving, going colder on the plugs is just gonna leave them fouled.
With only a 100shot plug heat rage shouldn't be too big of a deal i would think. As long as you aren't running some kind of gimmick plug anyway. If you do a lot of short trip driving, going colder on the plugs is just gonna leave them fouled.
Joined: Feb 2000
Posts: 1,855
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From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Autolite: lower number is colder
NGK: higher number is colder
GM: lower number is colder
Champion: all over the place
NGK: higher number is colder
GM: lower number is colder
Champion: all over the place
Thread Starter
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Originally posted by Ed Maher
It's as easy as knowing how your manufacturer of choice specs heat ranges. For example, with AC plugs for the standard iron heads on our car you'll have something like an R43TS. '43' is the heat range. Higher numbers are hotter, lower numbers are cooler.
With only a 100shot plug heat rage shouldn't be too big of a deal i would think. As long as you aren't running some kind of gimmick plug anyway. If you do a lot of short trip driving, going colder on the plugs is just gonna leave them fouled.
It's as easy as knowing how your manufacturer of choice specs heat ranges. For example, with AC plugs for the standard iron heads on our car you'll have something like an R43TS. '43' is the heat range. Higher numbers are hotter, lower numbers are cooler.
With only a 100shot plug heat rage shouldn't be too big of a deal i would think. As long as you aren't running some kind of gimmick plug anyway. If you do a lot of short trip driving, going colder on the plugs is just gonna leave them fouled.
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From: Fairview Heights Illinois
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Re: Colder Plugs?
Originally posted by B4C Hawaii
How do you get a colder plug? What do you ask for at a auto parts store? How can you tell the heat range is colder? Thanks in advance.
How do you get a colder plug? What do you ask for at a auto parts store? How can you tell the heat range is colder? Thanks in advance.
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