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09-16-2018, 05:01 PM
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#1 |
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Senior Member
 
Join Date: Jul 2002
Location: Oak Harbor, WA
Posts: 709
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Good shorty spark plug?
Was wondering if any of you are running the A/C Delco shorty plugs? Anyone using anything else? Pretty much a stock 350-4 with converted HEI and headers. Thanks!
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09-16-2018, 06:29 PM
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#2 |
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Registered User
Join Date: Jun 2018
Location: Ventura, Ca
Posts: 206
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Re: Good shorty spark plug?
I am using Autolite 303 plugs on mine since I needed a little more spark plug boot clearance on my headers. The are roughly 3/8" shorter than the A/C ones I had before and give a little bit of space between the header and spark plug boot. I know there are others that are shorter if that isn't enough for your application. I think Accel makes short spark plugs just for tight header applications. Also the 303 is for a flat seat cylinder head and I am not sure the number for a tapered seat head.
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09-16-2018, 11:53 PM
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#3 |
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Registered User
Join Date: Dec 2012
Location: Vancouver, Washington
Posts: 1,644
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Re: Good shorty spark plug?
I use the short Accel ones - they work great for me - (headers plus the truck runs great)
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1968 Chevrolet C/10 LWB - 327, TH350 - 4/5 Drop |
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09-17-2018, 06:55 AM
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#4 |
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Registered User
Join Date: Mar 2016
Location: Harrodsburg Ky
Posts: 9
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Re: Good shorty spark plug?
Ngk yr5
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