What plugs and gap for 5.3 with supercharger

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Oct 5, 2011 | 01:23 AM

#11

AKlowriderZ71

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Tim, you're running the wrong plugs. You're gonna blow the intake manifold welds....

Oct 5, 2011 | 04:30 AM

#12

TIM Z

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Quote:

Originally Posted by AKlowriderZ71

Tim, you're running the wrong plugs. You're gonna blow the intake manifold welds....

Good thing its cast then, I better put a motor blanket on just incase

Oct 5, 2011 | 08:07 AM

#13

outlaw38

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From: Texas

Quote:

Originally Posted by AKlowriderZ71

Post up a pic of your supercharger, I'm gonna guess that it's a MP112. Stock engine with 8 psi, I'd say a TR6 gapped at .035" should work just fine for you.

Its a TVS 1900

Oct 5, 2011 | 11:23 AM

#14

AKlowriderZ71

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From: Wyoming

Quote:

Originally Posted by outlaw38

Its a TVS 1900

Nice blower, no pics?

I'd still say try a TR6 at .035"

Oct 5, 2011 | 03:33 PM

#15

slowfive0

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From: Utica, MI

To each his own, but I would say run the BR6EF vs. the TR6. The TR6 has a projected tip which will work, but why take a chance. I've run TR6's (9psi boost) and didn't have problems and others have run more boost, but typically in boosted applications its recommended to run non-projected plugs.

I would keep the heat range the same though (BR6EF). FWIW, I just switched out some BR7EF's for the BR6EF's today. I was running a very aggressive tune last year and was borderline knock so I was running a little colder plug (BR7EF). Since I added the meth injection, the knock is a thing of the past so I went one heat range hotter (BR6EF). I'm happy with these thus far and it seems like my idle is a little cleaner.

NOTE: The 6's are one range colder then stock. The 7's are two ranges colder. I gapped my plugs at .035.

Good luck.