What kind of spark plugs does a Chevelle use?
* Early in 1970 the 3964290 cylinder head was recast to use the R44T tapered seat plugs so early castings may still use the R43N ‘standard’ plugs. Home| 1964| 1965| 1966| 1967| 1968| 1969| 1970| 1971| 1972| Misc.| What’s New| Decoding| Dale’s Chevelle Coins/CDs
How to read an AC Delco spark plug nomenclature?
Spark Plugs By Year How to read an AC Delco spark plug nomenclature. The following matrix of spark plugs used are for AC Delco as installed. Some of these may no longer be readily available or have been superseded by GM and can be used to cross-reference to another brand such as Autolite, Bosch, NGK, Champion, etc.
What kind of spark plugs do you use?
AC Delco Spark Plug 1964 194/230 46N 283/327 44/45 1965 194/230 46N 283/327 44/45 396 43N 1966 194/230 46N 283/327 44/45 396 43N 1967 194/230 46N 283/327 44/45 396 43N 1968 194/230 R46N 307 R45S 327 44 396 43N/44N 1969 230/250 R46N 307 R45S 350 R44 396 R43N * 1970 250 R46T 307 R45 350 R44 396/402 R44T * 454 R43T 1971 250 R46TS 307/350 (L65) R45TS
What kind of spark plug does a Chevy 454 have?
The block is from a 79 chevy truck and the oval port iron heads from a 69-70 passenger car. Compression is approximately 10:1. He has MSD capacative discharge “CD” ignition, headers, long duration cam, etc. what spark plug do I start with?
What kind of spark plugs do I need for Delco?
The following matrix of spark plugs used are for AC Delco as installed. Some of these may no longer be readily available or have been superseded by GM and can be used to cross-reference to another brand such as Autolite, Bosch, NGK, Champion, etc. Year Engine
* Early in 1970 the 3964290 cylinder head was recast to use the R44T tapered seat plugs so early castings may still use the R43N ‘standard’ plugs. Home| 1964| 1965| 1966| 1967| 1968| 1969| 1970| 1971| 1972| Misc.| What’s New| Decoding| Dale’s Chevelle Coins/CDs
The block is from a 79 chevy truck and the oval port iron heads from a 69-70 passenger car. Compression is approximately 10:1. He has MSD capacative discharge “CD” ignition, headers, long duration cam, etc. what spark plug do I start with?
What kind of spark plug do I Need?
I use AC Delco R43T spark plugs, gapped at .035. If you are running aftermarket aluminum heads like edelbrock performers, you will need to use a plug that uses a gasket. In order to answer your question better, more info is needed.
The following matrix of spark plugs used are for AC Delco as installed. Some of these may no longer be readily available or have been superseded by GM and can be used to cross-reference to another brand such as Autolite, Bosch, NGK, Champion, etc. Year Engine