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  • #1

    Spark Plugs

    I am going to put new plugs in this 3400 that i have been building up. i want a spark plug approxamately 1-2 heat ranges colder than stock, and i want to run Delco plugs.I CAN NOT use platinums with nitrous, and the auto parts stores only list platinums for the 3400.
    So, does anyone know what Delco copper plug is 1-2 heat ranges colder than the stock platinums?
    94 Grand Prix
    3400- NX 75 shot, Cammotion cam, S&S headers, and a few more toys
    Tags: None
  • #2
    Go with your NGK's one degree range cooler. Thats what I run and its best for nitrous.

    Got Lope?
    3500 Build, Comp XFI Cam 218/230 .050 dur .570/.568 lift 113LSA
    Fully Balanced, Ported, 3 Angle Valve Job, 65mm TCE TB, S&S Headers.
    Stage-1 Raybestos/Alto 4t60e-HD, EP LSD, 3.69FDR
    12.61@105 Epping NH Oct 2015 Nitrous 100shot (melted plugs) 13.58@98.8 N/A 3200LBS

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    • #3
      Thanks, i think i might have to go with the NGK, i like NGK but i would prefer Delcos. If anyone knows the magic plug number for my app. let me know.. BTW, the beretta 3400 with the giggle juice is absolutely beautiful
      94 Grand Prix
      3400- NX 75 shot, Cammotion cam, S&S headers, and a few more toys

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      • #4
        goto AC Delcos website.
        1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
        1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
        Because... I am, CANADIAN

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        • #5
          denso plugs rock

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          • #6
            '89 '90 TGP.

            These fit the aluminium headed 660 and are two heat ranges colder than N/A 660 plugs.

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