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Spark plugs!!!

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Postma98 View Drop Down
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    Posted: 03-September-2017 at 10:28AM
Anyone know what spark plugs will fit my 429...i don't know why but the autolite APP-45 is too big in diameter. I need to know before tomorrow, as always thank you
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aquartlow View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aquartlow Quote  Post ReplyReply Direct Link To This Post Posted: 03-September-2017 at 11:06AM
#45's (Autolite) are 18mm plugs, what cylinder heads are you using(casting # above center exhaust ports)? Autolite #3924's are a good # for the smaller 14mm plugs.
 
 Some 429-460 cylinder head casting number's using 18mm plugs
C8SE
C8VE
C9VE
DOVE-C
 
 Some 429-460 cylinder head casting numbers using 14mm plugs
DOOE-R
D2OB-AB& D3AE-FA(POLICE INTERCEPTOR ENGINES)
D2VE
D3VE-A2A
 
Hope this helps.
 
BTW, check plug threads carefully, somebody may have installed "adapters" to the 18mm heads to allow for more plug choices in the 14mm size.
 
Just a thought.
 
If you do find that the 18mm plugs fit, try an NGK WR5, I have been real happy with these since switching from Autolite 45's. 


Edited by aquartlow - 03-September-2017 at 11:19AM
www.supermotors.net/22468
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