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Old 06-30-2008, 06:44 PM   #1
dakman
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spark plugs small block chevy 400???

anyone have some part numbers.. heat ranges, best plug etc.. etc..Can't find anything. It's a 70's engine with tapered seat. I know it's not the same as the 350's and the ones that came out were a ford but the ones at NAPA look way different (electrode way down inside the body) just figured someone on here must be running the 400 small block..

Thanks
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Old 06-30-2008, 06:48 PM   #2
El Jay
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Re: spark plugs small block chevy 400???

My book says R44TX.
Hope that helps.
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Old 06-30-2008, 06:50 PM   #3
redhead69
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Re: spark plugs small block chevy 400???

autolite platinum working good for me

AP26
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Old 06-30-2008, 07:47 PM   #4
dakman
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Re: spark plugs small block chevy 400???

thanks, youy guys have stock heads?
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