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Old 06-05-2002, 01:18 PM
Moparjimbo Moparjimbo is offline
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Default spark plugs for Indy SR heads

I wrote it down but lost it - what is the recommended plugs for the Indy SR heads?

Better yet - any spark plug experts care to recommend a plug for a 10.75 to 1, 496 CI with ported Indy SR heads, .660 lift 304 duration roller cam, 150 shot of nitrous?
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Old 06-05-2002, 01:32 PM
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Lee Pritchard Lee Pritchard is offline
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well i dont have indy sr , i have indy 440-1s and i used NGK no#7 on the motor and no# 9 on the spray.....hope that helps...p/s the ngks heat range goes down with a higher number...
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Old 06-05-2002, 09:06 PM
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440dart_72 440dart_72 is offline
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i know on my direction sheet it recommended a champion plug. it was something like c59yc
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Old 06-05-2002, 09:38 PM
Jeff Chopin Jeff Chopin is offline
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Smile Plugs

You can go to the Indy web and get all the info. you need.
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