Which spark plug? 383 LS1
06-23-2012, 05:28 PM
#1
Which spark plug? 383 LS1 I've been back and forth and can't figure out which plug would be best.
Engine is a 383 LS1 with 11:1 compression and a 238/244 cam. It's in my boat and sees long periods of 5000+RPM. Motor is N/A ,93 octane, and no nitrous.
Do I need to run:
TR55
TR6
BR6 (cant find a BR55)
BR7
Or a plug I don't have listed
I'm not sure how N/A motors react to projected vs non-projected tip plugs...
Engine is a 383 LS1 with 11:1 compression and a 238/244 cam. It's in my boat and sees long periods of 5000+RPM. Motor is N/A ,93 octane, and no nitrous.
Do I need to run:
TR55
TR6
BR6 (cant find a BR55)
BR7
Or a plug I don't have listed
I'm not sure how N/A motors react to projected vs non-projected tip plugs...
Last edited by FormulaZR; 06-23-2012 at 06:54 PM.
06-24-2012, 11:43 AM
#2
Staging Lane
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At least a TR6 or equivelent... iridium will last longer.. would be my thought... maybe a BR7ef.. all depends on how much power your making.. A colder plug will not hurt the engine. It could foul quicker though. To hot a plug could cause pre-ignition so its better to error on the safe side... your tuner should tell you what to use
