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Thread: 98 vortec sparkplug gap
07-29-2013, 07:44 PM #11
08-02-2013, 06:16 PM #12
08-02-2013, 06:25 PM #13
I've always gotten plugs that don't to be gapped. My current plugs are Bosch platinum 4s.
08-03-2013, 09:34 AM #14
had thought about going with a set of E3's but had a chance to get a set of ngk tr55's for so cheap couldnt say no
08-03-2013, 10:23 AM #15
vortec spec is .060 as has been said, some situations dictate a change from that, for example with forced induction are better with a closer gap, I ran .045 when I had my whipple on. and variances in the ignition system can dictate gap changes as well...
but yeah, .060 is spec for '96-'00 L30/L31 vortecs.
as far as the E3's and 4+, or whatever...if they work for you and the extra cost is worth it in your eyes, than by all means, go for it, i'm not wanting to start a war over plug preferences... but IMO they fall in the 'gimmick' category and I typically never recommend them...IMO the inability to gap them is a loss of control, as has been stated in this thread, plug gap is something that is dependent on the engine setup, so being incapable of changing that is a really bad thing in my eyes, especially since we're talking about a significant change in gap size (TBI - 0.35/0.45, vortec - 0.060, etc), not to mention other factors like having all that extra stuff shielding the air fuel mixture from the spark to some degree or another (also bad), and the significantly higher cost....I'm not a fan of them. but again, that is just my opinion on them, if they work for you and you like them and they're worth the added cost in your eyes, then go for it.
Last edited by Aloicious; 08-03-2013 at 10:34 AM.'96 C1500 ECSB, 5.7L the "LS31", T56, 411 PCM, EFILive self-tuned, LC-1, Distributorless 24x CNP, LS2 coils, ZZ4 cam, Custom MPFI, RHS heads,Hydroboost, LT's/dual 3", Mark VIII Fan, Truetrac, 4.88, sound deadened, DEH-P600UB, Polk comps/10", kicker amps. COMING SOON: Twin Turbos...
08-03-2013, 10:44 AM #16
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Also they have 2 or more ground tabs . The spark only needs one ! It will take the path of least resistance , and it will never use all te grounds . Also like stated above gap is extreamly important !There is a fine line between crazy an stupid . What side of the line are you on ?
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08-03-2013, 11:01 AM #17'96 C1500 ECSB, 5.7L the "LS31", T56, 411 PCM, EFILive self-tuned, LC-1, Distributorless 24x CNP, LS2 coils, ZZ4 cam, Custom MPFI, RHS heads,Hydroboost, LT's/dual 3", Mark VIII Fan, Truetrac, 4.88, sound deadened, DEH-P600UB, Polk comps/10", kicker amps. COMING SOON: Twin Turbos...
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