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07-28-2017, 11:55 PM | #1 |
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What Depth Spark Plugs? 327 With 462 Heads
I'm looking at shorty spark plugs to sneak underneath my Doug Thorley Tri Y headers, and noticing that there are two depths of threads. Will the deeper ones fit? I'm thinking that they'll increase the compression ratio a smidge if they do (by sticking out further into the combustion chamber, thereby shrinking the size of the chamber a bit), with the related benefits.
Last edited by ShortCST; 07-29-2017 at 01:42 PM. Reason: Typo makes the thread nonsensical |
07-29-2017, 12:46 AM | #2 |
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Re: What Depth Spark Plugs? 327 With 962 Heads
Sure on the 962 heads? Not 062?
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07-29-2017, 01:31 PM | #3 |
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Re: What Depth Spark Plugs? 327 With 962 Heads
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07-29-2017, 04:27 PM | #4 |
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Re: What Depth Spark Plugs? 327 With 962 Heads
Champion RJ6C
or Bosch WR8EC or AC Delco R43 All should be gapped at .035 Dont use long thread plugs in these heads...they will either cause piston to plug interference and damage or the threads will fill up with carbon and make removal almost impossible...have also heard of threads glowing so hot they cause pre-ignition... Stick to correct length plugs...safer |
07-29-2017, 04:52 PM | #5 | |
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Re: What Depth Spark Plugs? 327 With 962 Heads
Quote:
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07-29-2017, 10:45 PM | #6 | |
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Re: What Depth Spark Plugs? 327 With 962 Heads
Quote:
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA Last edited by Steeveedee; 07-29-2017 at 10:50 PM. |
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