E3 Spark Plugs - JEGS

I have used these in other cars, but are they a good plugs for a LT1?
If not, what should I use?

 

I never go for gimmick plugs.

 

Multiple electrodes are gimmicks, OEMs have tested them and not used them.

Platinum and iridium are to reduced gap errosion.
Other than that a sparkplug is a sparkplug just need to find the right heat range.

 

I quess I will go with ACDelco Part # 41-906.

 

I've always ran the NGK TR55's, never had a problem

 

If you want a long lasting plug for a stockish engine there is nothing wrong with the Delco platinums especially if you want to change plugs very infrequently.
They can loose the platinum pucks if the engine is more powerful than stock though so if you try and use them on a mildly modded engine maybe be aware that is possible and check.

TR55s are fine so long as the person using them understands they will not last nearly as long as stock plugs, most people who modify their plugs are not looking to leave them in for years at a time so they are good with that.

 

I went to my local Napa store and this is what they say they have for my 1993 Z28.
NAPA AUTO PARTS)
The OE plug is not made anymore. R45.

So is this a replacement? Or a simple NGK work as well? My local stores here have not a clue when I tell them my stock plug number.

 

Just found this one at Autozone.Ac Delco Copper/Spark Plug (R44LTS) | 1993 Chevrolet Camaro 8 Cylinders P 5.7L SFI OHV | AutoZone.com

I like a copper core, my 5.9L Dakota RT seems to run best on them.
Would this be a good plug too?

 

I used e3s based on a recommendation and i can't say I'm overly impressed. I should have just stuck with the delco rapid fires

 

All plugs have a copper "core" (center electrode). The extended life plugs just have a tip that is platinum or iridium to resist erosion. An all copper plug will experience shorter electrode life, as Dwayne explained. You'll be changing them after 15-20,000 miles because the gap will have opened up (even though you gapped them smaller to begin with. The platinum or iridium plugs can be set with a wider gap, and will hold that gap for up to 100,000 miles.

 

I've always used autolite copper and never had a problem.....pretty cheap too. Could be just me but they seemed easier to take out compared to ngk. They were a bit shorter.

 

If I were to put the t55ix's . Would that be better than just t55s? Only wanna do this once for a long time and with boltons and stuff I know I won't be over 400hp in the next cpl yrs .got a 96 with 59k . There's too many options ......

 

Those are the iridium plugs and as explained above those are fine for your application with no power adders. I always use copper core plugs for my turbo and supercharged motors. IRs in the TA with mild cam and ported heads work fine and are good for a long time, probably over 25k miles on them of daily driving. Pull one occasionally just to make sure all looks fine and check gap.
AC Delco makes an IR plug also that is fine, can't remember the # off the top of my head. Platinums have always been a problem in any application for me fouling.