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Spark plug heat ranges??

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Old

Feb 11, 2003 | 01:21 PM

#1

Dolph88sc350TPI

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Joined: Jun 2002

Posts: 148

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From: Moss Pont, MS

Car: 88 Camaro SC, 86 T/A, 92 Eclipse

Spark plug heat ranges??

On acdelco plugs, is the higher number a hotter plug or lower number?

Old

Feb 11, 2003 | 03:46 PM

#2

Supreme Member

Joined: Jul 1999

Posts: 18,457

Likes: 16

From: Loveland, OH, US

Car: 4

Engine: 6

Transmission: 5

higher # = hotter (in the old system, like R44TS)

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