alank1953

Anyone have any input as to why the colder TR6's should benefit over stock replacement TR55's. I'm running stock heads & cam, ls6 intake, 85mm BBK TB, Jet hot long tubes, LS1 edit, MSD coils & wires, 3000 Vigilante, shift kit, 3.73 gears and suspension stuff. Runs 12.30's at 110.00. Developed knock sensor code and misfire ( don't wash your ls1 engines with water guys ) so had to pull the manifold, front KS rusty and corroded !
Long story, but looking for the misfire, my tuner put TR6's in it and I wanna go back to the hotter plugs..............Any thoughts?

Thanks

KCFormula

iTrader: (4)

If your tuner knows the MSD coils well he could have optimized the dwell tables for the TR6s. Unlikely but possible.

alank1953

Good thought, but I didn't have the MSD's on when I did the edit, one of the stock coils took a dump after the tune and I replaced them all with the MSD's.

99blancoSS

iTrader: (115)

colder plug will foul quicker

01ssreda4

iTrader: (96)

^^ I agree

tr-55=NA
tr-6=spray

generally speaking of course

alank1953

Thank you All !

LT1T/A

iTrader: (6)

Does this hold true w/ mild H/C setups as well? The car in question will have its 806's ported soon on top of a 219/230 607/.604 117 lsa cam.

c0ncEpT

iTrader: (4)

A very loose rule of thumb is for ever 100hp you add over stock you should go 1 heat range colder with the plug. Thats a very loose rule and can differ with every application.

MJs1FastSS

iTrader: (149)

maybe it already was impiled but why did you/he install the tr6s?

Skidog5150

iTrader: (2)

I agree, that's the general rule. I've heard of going to the TR55IX which are the irridiums but not the TR6's.

alank1953

My tuner installed them when he did the LS1 edit, I don't know why, I've replaced them with TR55GP's

Skidog5150

iTrader: (2)

What's the difference beween the regular TR55's and the GP's?

alank1953

GP's are Platinum, for only a buck more than the regular 55's

Skidog5150

iTrader: (2)

Gotch ya. Thanks..