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73-87 Chevy _ GMC Trucks => Performance => Topic started by: black82 on September 10, 2008, 04:32:50 pm

Title: spark plugs too HOT
Post by: black82 on September 10, 2008, 04:32:50 pm

i have a 454 in my truck and according to the ground strap the autolite 24 plug is too hot does anyone have any recommendations of what ones to use

Title: Re: spark plugs too HOT
Post by: VileZambonie on September 10, 2008, 05:19:16 pm

According to the ground strap?  ???

What year is your engine?

Title: Re: spark plugs too HOT
Post by: black82 on September 10, 2008, 06:01:55 pm

The ground strap indicates the heat range of the spark plug    idk what year the block is

Title: Re: spark plugs too HOT
Post by: DnStClr on September 13, 2008, 12:21:06 am

Ground strap info- I never knew this before. Thanks black82.
http://www.carcraft.com/howto/116_0703_spark_plug_guide/ignition_timing.html (http://www.carcraft.com/howto/116_0703_spark_plug_guide/ignition_timing.html)

Ground Strap differences
(http://i227.photobucket.com/albums/dd22/Dnstclr/116_0703_05_zspark_plug_guideinsula.jpg)

Title: Re: spark plugs too HOT
Post by: VileZambonie on September 13, 2008, 12:04:45 pm

Quote from: black82 on September 10, 2008, 06:01:55 pm

The ground strap indicates the heat range of the spark plug    idk what year the block is

So you are saying you're reading your plugs and the ground electrode appears to discolored making you think the plug is too hot. What is your ignition timing? If you want to run Autolites use plug #145

Title: Re: spark plugs too HOT
Post by: black82 on September 14, 2008, 11:58:49 am

http://www.angelfire.com/fl4/pontiacdude428/Readplugs.html
this write up is what i was going off of to say they were to hot... my timing is at 38 the motor is prob  10:5 to 1