spark plugs cold/hot
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Joined: Nov 2005
Posts: 21
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From: TN
Car: 96camaro ss,87z28, elcamino,68 firebird
Engine: which car ?
Transmission: most likely a manuel
spark plugs cold/hot
hey every one ,
i have a few questions about spark plugs .
1. i am working on a 350 in a 84 camaro for a friend an theres a cly thats burning oil an i would like to change the plug to a hotter pulg .
2. higher the # hotter the plug ?
3. higher compression an bigger cam do u need a colder plug ?
4.when do u need to change plugs colder/hotter when doing mods?
5.an if u have efi do u still need to change plugs due to mods or will the efi compensate for this ?
i have a few questions about spark plugs .
1. i am working on a 350 in a 84 camaro for a friend an theres a cly thats burning oil an i would like to change the plug to a hotter pulg .
2. higher the # hotter the plug ?
3. higher compression an bigger cam do u need a colder plug ?
4.when do u need to change plugs colder/hotter when doing mods?
5.an if u have efi do u still need to change plugs due to mods or will the efi compensate for this ?
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
hot plug for a cold (tame) engine, cold plug for a hot (high perf) engine.
Has the engine been modified? Has the CR changed from stock?
Has the engine been modified? Has the CR changed from stock?
Member
Joined: Feb 2003
Posts: 263
Likes: 1
From: White Lake, MI
Car: 89' IROCZ
Engine: 5.7 L98
Transmission: 700r4
You need to read the plugs. If increased compression creates detonation then you will need a colder plug. EFI cars need colder plugs if the mod creates detonation.
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