Thread: Correct Spark plugs for NCRS 67 Corcette 427/390
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Old 04-08-2009, 08:04 PM
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Default Re: Correct Spark plugs for NCRS 67 Corcette 427/390
I'm not a vette guy either,but here's what I thought..
1967 427 Impala & Corvettes w/385HP,390HP,400HP,430HP,& 435HP-(L-71 only),got the 14mm AC 43N hot plugs,part #5612241,for city type driving.

1967 427 Corvettes w/Aluminum cyl. heads,(L-88 & L-89 only,)got AC 43XL plugs,part #5613104,for normal service.

1965-67 Impala series w/solid lifter 396 or 427cid. got the 14mm AC 43N plugs,part #5612235,for normal service.
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