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Spark plug thread reach

 
zapper71
I love my Chevy Chevette!
Posts: 4
Joined: 08/13
Posted: 08/22/13 09:43 AM

What is the sparkplug thread length for sm blk casting 462, or 492 double humpers. Is it .460 or .375 or ???  

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waynep712222
I have an SS396 tatoo
Posts: 251
Joined: 03/13
Posted: 08/22/13 02:14 PM

Ac delco R45s 0.370" thread length  

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74CamaroLS1
I love my Chevy Chevette!
Posts: 11
Joined: 08/13
Posted: 08/22/13 02:28 PM

http://www.chevytalk.org/fusionbb/showtopic.php?tid/127753/

Looks like it's .375  

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zapper71
I love my Chevy Chevette!
Posts: 4
Joined: 08/13
Posted: 08/22/13 03:52 PM

Thanks guys! Now if I can just find a 3/8th" reach gasket plug that's medium cold for E85 alcohol I'll be in business.  

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zapper71
I love my Chevy Chevette!
Posts: 4
Joined: 08/13
Posted: 08/22/13 03:54 PM

Smirk Thanks guys! Now if I can just find a 3/8th" reach gasket plug that's medium cold for E85 alcohol I'll be in business.  

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zapper71
I love my Chevy Chevette!
Posts: 4
Joined: 08/13
Posted: 08/23/13 04:34 AM

Never mind, Found a couple on Jegs or Summit! Autolite AR73(cool), AR72(cooler).  

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