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Thread: spark plug reference

  1. 01-02-2015, 05:37 PM #1
    jcmGT
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    Default spark plug reference

    Stumbled upon this cross reference table original posted on LS1tech here:
    http://ls1tech.com/forums/nitrous-ox...reference.html from Mike@HSW

    "Thought we would contribute our detailed spark plug reference to the site. We spent a lot of time putting this together, hopefully it'll aide you guys in your spark plug selection. Its not going to tell you what to choose, but rather part numbers for what you can run and equivalant of NGK plugs. We made this awhile ago but didnt post it sicne we found our last one on other peoples sites. But we figured it would be really useful to you guys.

    It was tough to format it for this site, so just let me know if you have any questions about this, plug selection or anything else in general."


    Gasket Seat - .708 - .75" reach - 14mm thread dia. - 5/8 hex
    Fittment - LSx & LTx w/ gasket seat plugs
    Heat Range Brand Part Number Design Number Tip Designation Special Notes
    5 NGK 7373 FR5 Projected Stock Heat Range.
    5 NGK 6130 BCPR5ES Projected Stock Heat Range. Tighter Gap.
    5 NGK BKR5EIX-11 Projected Stock Heat Range. Extended Gap. IRIDIUM
    5 (NGK) Denso 3137 Q16PR-U Projected Stock Heat Range.
    5 (NGK) Denso 5305 IK-16 Projected Stock Heat Range. IRIDIUM.
    5 (NGK) Champion 431 RC14YC Projected Stock Heat Range.
    5 (NGK) Autolite 5503 5503 Projected Stock Heat Range.
    6 NGK 2330 BCPR6ES Projected 1 step colder w/ projected tip.
    6 NGK 6418 BKR6EIX Projected 1 step colder w/ projected tip. IRIDIUM.
    6 (NGK) Denso 3007 Q20PR-U Projected 1 step colder w/ projected tip.
    6 (NGK) Denso 5304 IK-20 Projected 1 step colder w/ projected tip. IRIDIUM.
    6 (NGK) Champion 344 RC9YC Projected 1 step colder w/ projected tip.
    7 NGK 4091 R5671A-7 Non-Projected 2 steps colder w/ NON-projected tip. Non-Resisted.
    7 (NGK) Denso 3010 Q22PR-U Projected 2 steps colder w/ projected tip.
    7 (NGK) Denso 5310 IK-22 Projected 2 steps colder w/ projected tip. IRIDIUM.
    7 (NGK) Champion 284 S65YC Projected 2 steps colder w/ projected tip. Non-Resisted.
    7 (NGK) Autolite 3922 3922 Projected 2 steps colder w/ projected tip.
    7 (NGK) Autolite AR3935 AR3935 Non-Projected 2 steps colder w/ NON-projected tip. Non-Resisted.
    8 NGK 4554 R5671A-8 Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted.
    8 (NGK) Denso 5311 IK-24 Projected 3 steps colder w/ projected tip. IRIDIUM.
    8 (NGK) Champion 796 C63YC Projected 3 steps colder w/ projected tip. Non-Resisted.
    8 (NGK) Champion 279 C63Y Projected 3 steps colder w/ projected tip. Non-Resisted. Cut back electrode.
    8 (NGK) Champion 298 C63CX Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    8 (NGK) Autolite AR3934 AR3934 Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted.
    8 (NGK) Brisk D12S Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    9 NGK 5238 R5671A-9 Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 (NGK) Denso 5312 IK-27 Projected 4 steps colder w/ projected tip. IRIDIUM.
    9 (NGK) Champion 794 C61YC Projected 4 steps colder w/ projected tip. Non-Resisted.
    9 (NGK) Champion 785 C61C Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 (NGK) Champion 278 C61Y Projected 4 steps colder w/ projected tip. Non-Resisted. Fine Wire. Cut back electrode.
    9 (NGK) Champion 688 C61 Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted. Fine Wire.
    9 (NGK) Champion 297 C61CX Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    9 (NGK) Autolite AR3933 AR3933 Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 (NGK) Brisk D10S Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    10 NGK 5820 R5671A-10 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10 (NGK) Denso 5321 IK-31 Projected 5 steps colder w/ projected tip. IRIDIUM.
    10 (NGK) Champion 792 C59YC Projected 5 steps colder w/ projected tip. Non-Resisted.
    10 (NGK) Champion 277 C59Y Projected 5 steps colder w/ projected tip. Non-Resisted. Fine Wire. Cut back electrode.
    10 (NGK) Champion 687 C59 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted. Fine Wire.
    10 (NGK) Champion 296 C59CX Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    10 (NGK) Autolite AR3932 AR3932 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10 (NGK) Brisk D08S Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    10.5 (NGK) Champion 791 C57YC Projected 5.5 steps colder w/ projected tip. Non-Resisted.
    10.5 (NGK) Champion 276 C57Y Projected 5.5 steps colder w/ projected tip. Non-Resisted. Fine Wire. Cut back electrode.
    10.5 (NGK) Champion 686 C57 Non-Projected 5.5 steps colder w/ NON-projected tip. Non-Resisted. Fine Wire.
    10.5 (NGK) Champion 295 C57CX Non-Projected 5.5 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    11 NGK 6596 R5671A-11 Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted.
    11 (NGK) Champion 693 C55 Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted. Fine Wire.
    11 (NGK) Champion 294 C55CX Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.
    11 (NGK) Autolite AR3931 AR3931 Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted.
    11.5 (NGK) Champion 293 C53CX Non-Projected 6.5 steps colder w/ NON-projected tip. Non-Resisted. Cut back electrode.

    Taper Seat - .708 - .75" reach - 14mm thread dia. - 5/8 hex
    Fittment - LSx & LTx w/ taper seat plugs - Mod Ford (96-04 SOHC 4.6)(96-01 DOHC 4.6)(03-04 SC DOHC 4.6)*(99-04 SC SOHC 5.4)* - 5.0L Ford (91-95 w/ taper seat heads)
    * - Supercharged Mod Fords start at 6 for stock heat range.
    Heat Range Brand Part Number Design Number Tip Designation Special Notes
    5 NGK 3951 TR55 Projected Stock Heat Range. Extended Gap.
    5 NGK 7164 TR55IX Projected Stock Heat Range. Extened Gap. IRIDIUM.
    5 (NGK) Denso 5325 IT-16 Projected Sotck Heat Range. IRIDIUM.
    5 (NGK) AC Delco R42CLTS6 R42CLTS6 Projected Stock Heat Range. Extended Gap.
    5 (NGK) Champion 13 RS14YC6 Projected Stock Heat Range. Extended Gap.
    5 (NGK) Denso 5023 T16EPR-U15 Projected Stock Heat Range. Extended Gap.
    6 NGK 4177 TR6 Projected 1 step colder w/ projected tip.
    6 NGK 3689 TR6IX Projected 1 step colder w/ projected tip. IRIDIUM.
    6 NGK 3177 BR6EF Non-Projected 1 step colder w/ NON-projected tip.
    6 (NGK) Denso 5326 IT-20 Projected 1 step colder w/ projected tip.
    6 (NGK) Champion 304 RS9YC Projected 1 step colder w/ projected tip.
    6 (NGK) Autolite AR103 AR103 Projected 1 step colder w/ projected tip.
    7 NGK 3690 TR7IX Projected 2 steps colder w/ projected tip. IRIDIUM.
    7 NGK 3346 BR7EF Non-Projected 2 steps colder w/ NON-projected tip.
    7 (NGK) Denso 5040 T22EP-U Projected 2 steps colder w/ projected tip.
    7 (NGK) Denso 5327 IT-22 Projected 2 steps colder w/ projected tip. IRIDIUM.
    7 (NGK) Brisk 51 GR14S Non-Projected 2 steps colder w/ NON-projected tip.
    8 NGK 3691 TR8IX Projected 3 steps colder w/ projected tip. IRIDIUM.
    8 NGK 1049 B8EFS Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted.
    8 NGK 7317 R5724-8 Projected 3 steps colder w/ projected tip. Non-Resisted
    8 (NGK) Denso 5328 IT-24 Projected 3 steps colder w/ projected tip. IRIDIUM.
    8 (NGK) Champion 281 S63YC Projected 3 steps colder w/ projected tip. Non-Resisted.
    8 (NGK) Autolite AR474 AR474 Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted.
    8 (NGK) Brisk 84 GR12S Non-Projected 3 steps colder w/ NON-projected tip.
    9 NGK 1085 B9EFS Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 NGK 7891 R5724-9 Projected 4 steps colder w/ projected tip.
    9 (NGK) Denso 5329 IT-27 Non-Projected 4 steps colder w/ NON-projected tip. IRIDIUM
    9 (NGK) Champion 286 S61C Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 (NGK) Champion 280 S61YC Projected 4 steps colder w/ projected tip. Non-Resisted.
    9 (NGK) Autolite AR473 AR473 Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 (NGK) Brisk G10S G10S Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    10 NGK B10EFS B10EFS Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10 NGK 5980 R5724-10 Projected 5 steps colder w/ projected tip.
    10 (NGK) Brisk G08S G08S Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10 (NGK) Champion 683 S59C Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10 (NGK) Champion 685 S59YC Projected 5 steps colder w/ projected tip. Non-Resisted.
    10 (NGK) Autolite AR472 AR472 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10.5 (NGK) Champion 682 S57C Non-Projected 5.5 steps colder w/ NON-projected tip. Non-Resisted.
    11 (NGK) Champion 681 S55C Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted.
    Last edited by jcmGT; 01-02-2015 at 07:35 PM.
    9.5 RPM (Red Passion Metallic)
    Sport /Premium
    "If the women don't find you handsome, they should at least find you handy"-Red Green


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  2. 01-02-2015, 05:37 PM #2
    jcmGT
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    Taper Seat - .460" Reach - 14mm thread dia. - 5/8 hex
    Fittment - 5.0L Ford w/ short reach plugs
    Heat Range Brand Part Number Design Number Tip Designation Special Notes
    4 NGK 6945 UR45 Projected Stock Heat Range.
    4 NGK 3207 UR45IX Projected Stock Heat Range. IRIDIUM.
    4 (NGK) Denso 5021 T14PR-U15 Projected Stock Heat Range. Extended Gap.
    4 (NGK) Denso 5330 ITF-16 Projected Stock Heat Range. IRIDIUM.
    4 (NGK) Champion 37 RV17YC Projected Stock Heat Range.
    4 (NGK) Autolite 25 25 Projected Stock Heat Range.
    5 NGK 2771 UR5 Projected 1 step colder w/ projected tip.
    5 NGK 7177 UR5IX Projected 1 step colder w/ projected tip.
    5 (NGK) Denso 5027 T16PR-U15 Projected 1 step colder w/ projected tip.
    5 (NGK) Denso 5330 ITF-16 Projected 1 step colder w/ projected tip. IRIDIUM.
    5 (NGK) Champion 406 RV12YC Projected 1 step colder w/ projected tip.
    5 (NGK) Autolite AR24 AR24 Projected 1 step colder w/ projected tip.
    6 NGK 7773 UR6 Projected 2 steps colder w/ projected tip.
    6 NGK 7348 UR6IX Projected 2 steps colder w/ projected tip.
    6 NGK 4449 R5674-6 Projected 2 steps colder w/ projected tip. Non-Resisted.
    6 NGK 2405 R5673-6 Non-Projected 2 steps colder w/ NON-projected tip. Non-Resisted.
    6 (NGK) Denso 5035 T20PR-U Projected 2 steps colder w/ projected tip.
    6 (NGK) Denso 5038 T20R-U Non-Projected 2 steps colder w/ NON-projected tip.
    6 (NGK) Denso 5331 ITF-20 Projected 2 steps colder w/ projected tip.
    6 (NGK) Champion 400 RV9YC Projected 2 steps colder w/ projected tip.
    6 (NGK) Autolite AR23 AR23 Projected 2 steps colder w/ projected tip.
    6 (NGK) Autolite AR13 AR13 Projected 2 steps colder w/ projected tip.
    7 NGK 5034 R5674-7 Projected 3 steps colder w/ projected tip. Non-Resisted.
    7 NGK 2817 R5673-7 Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted.
    7 (NGK) Denso 5332 ITF-22 Projected 3 steps colder w/ projected tip. IRIDIUM.
    7 (NGK) Autolite AR12 AR12 Projected 3 steps colder w/ projected tip. Non-Resisted.
    7 (NGK) Autolite AR135 AR135 Non-Projected 3 steps colder w/ NON-projected tip. Non-Resisted.
    8 NGK 5657 R5674-8 Projected 4 steps colder w/ projected tip. Non-Resisted.
    8 NGK 3249 R5673-8 Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    8 (NGK) Denso 5323 ITF-24 Non-Projected 4 steps colder w/ NON-projected tip. IRIDIUM.
    8 (NGK) Champion 802 V63C Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    8 (NGK) Champion 265 V63Y Projected 4 steps colder w/ projected tip. Non-Resisted.
    8 (NGK) Autolite AR134 AR134 Non-Projected 4 steps colder w/ NON-projected tip. Non-Resisted.
    9 NGK 6468 R5674-9 Projected 5 steps colder w/ projected tip. Non-Resisted.
    9 NGK 3442 R5673-9 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    9 (NGK) Denso 5334 ITF-27 Non-Projected 5 steps colder w/ NON-projected tip. IRIDIUM.
    9 (NGK) Champion 263 V61 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted. Fine Wire.
    9 (NGK) Autolite AR133 AR133 Non-Projected 5 steps colder w/ NON-projected tip. Non-Resisted.
    10 NGK 6702 R5674-10 Projected 6 steps colder w/ projected tip. Non-Resisted.
    10 NGK 4050 R5673-10 Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted.
    10 (NGK) Champion 672 V59YC Projected 6 steps colder w/ projected tip. Non-Resisted.
    10 (NGK) Champion 670 V59C Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted
    10 (NGK) Autolite AR132 AR132 Non-Projected 6 steps colder w/ NON-projected tip. Non-Resisted.
    10.5 (NGK) Champion 671 V57YC Projected 6.5 steps colder w/ projected tip. Non-Resisted.
    10.5 (NGK) Champion 669 V57C Non-Projected 6.5 steps colder w/ NON-projected tip. Non-Resisted.
    10.5 (NGK) Autolite AR131 AR131 Non-Projected 6.5 steps colder w/ NON-projected tip. Non-Resisted.
    11 (NGK) Champion 668 V55C Non-Projected 7 steps colder w/ NON-projected tip. Non-Resisted.

    Taper Seat - 1" Reach - 14mm thread dia. - 5/8 hex
    Fittment - Mod Hemi (5.7L)(6.1L)* - SRT4 (2.4L Turbo)*
    *SRT models start at 5 for stock heat range.
    Heat Range Brand Part Number Design Number Tip Designation Special Notes
    4 NGK 5306 LZTR4A-11 Projected Stock Heat Range
    5 NGK 4306 LZTR5A-13 Projected 1 step colder w/ projected tip.
    5 NGK 4344 LTR5IX-11 Projected 1 step colder w/ projected tip. IRIDIUM.
    5 NGK 2314 LZTR5AIX-13 Projected 1 step colder w/ extended projected tip. IRIDIUM.
    5 (NGK) Denso 5349 ITL-16 Projected 1 step colder w/ projected tip. IRIDIUM.
    6 NGK 6509 LTR6IX-11 Projected 2 steps colder w/ projected tip. IRIDIUM.
    6 NGK 2315 LZTR6AIX-13 Projected 2 steps colder w/ extended projected tip. IRIDIUM.
    6 (NGK) Denso 5350 ITL-20 Projected 2 steps colder w/ projected tip. IRIDIUM.
    7 NGK 6510 LTR7IX-11 Projected 3 steps colder w/ projected tip. IRIDIUM.
    7 NGK 5107 LZTR7AIX-13 Projected 3 steps colder w/ extedned projected tip. IRIDIUM.
    7 (NGK) Denso 5340 ITV-22 Non-Projected 3 steps colder w/ NON-projected tip. IRIDIUM.
    7 (NGK) Brisk 86 RR14YS Projected 3 steps colder w/ NON-projected tip.

    Taper Seat - 1" Reach - 14mm thread dia. - 9/16 hex
    Fittment - 4.6L Mod Ford 3 Valve (05-08 Mustang) High-Thread
    Heat Range Brand Part Number Design Number Tip Designation Special Notes
    5 (NGK) Autolite HT1 HT1 Projected Stock Heat Range. Sheilded Projected Tip.
    5 (NGK) Brisk 57 3VR17YS Projected Stock Heat Range. Projected tip.
    6 (NGK) Autolite HT0 HT0 Projected 1 step colder w/ projected tip. Sheilded Tip.
    6 (NGK) Brisk 86 3VR14S Non-Projected 1 step colder w/ NON-projected tip.
    7 (NGK) Brisk 85 3VR12S Non-Projected 2 steps colder w/ NON-projected tip.
    8 (NGK) Brisk 84 3VR10S Non-Projected 3 steps colder w/ NON-projected tip.
    Taper Seat - 1" Reach - 12mm thread dia. - 9/16 hex
    Fittment - 4.6L Mod Ford 3 Valve (08-09 Mustang) Full-Thread
    Heat Range Brand Part Number Design Number Tip Designation Special Notes
    5 (NGK) Ford HJFS 24FP HJFS 24FP Projected Stock Heat Range.
    5 (NGK) Brisk XOR14YS-1 XOR14YS-1 Projected Stock Heat Range.
    6 (NGK) Brisk XOR12YS-1 XOR12YS-1 Projected 1 step colder w/ projected tip.
    9.5 RPM (Red Passion Metallic)
    Sport /Premium
    "If the women don't find you handsome, they should at least find you handy"-Red Green


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  3. 01-02-2015, 07:05 PM #3
    TooManyHobbies
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    I am trying to comprehend the power levels involved with a 6 step colder plug.

    Rotohack 102 intake - 102 MAF - TPIS 102 TB - TVS1900 ported & plated w 8 rib 2.5" front + OD rear
    PnP Interchiller - RCR ported heads - RCR Lunati 219/231 113+1 - Forged Bottom End
    ARH 2" LT headers - Solo 3" CB - MT DRs + M&H FRs on Weld RT-S
    CTS-V fuel w Vaporworx - FAST 85s - Alkycontrol meth M15 + M10 - RCR tune
    9.75@139.2 ? rwhp ? rwtq
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  4. 01-02-2015, 07:39 PM #4
    jcmGT
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    Mongo power
    9.5 RPM (Red Passion Metallic)
    Sport /Premium
    "If the women don't find you handsome, they should at least find you handy"-Red Green


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