ss4luck

silver408z

I would not mount them down with 1 bolt. Seems like there would be vibrations that would not be good for them. I have never seen anything that showed the ls3 coils were better but they could be and I just down know it. The problem is going to be the plugs for the wiring harness are different I believe. Also there is something about how different coils fire and its called dwell I believe. I believe you had to adjust your tune if they are different dwell. I would look into seeing if Holley makes a set that fits your coils you have already. Another option might be the Holley coils. Although they might require a retune as well.

ss4luck

The valve covers are only spaced for LS3 style coils. I know there are dudes around running them with one bolt and reporting no problems (so far). I’m not worried about wiring that’s an easy fix and the coil dwell is something I was aware of too. The entire drivetrain is out right now getting an LS3/PG swap so the tune is going to have to be redone in its entirety as it is lol

z0stix

I've been running Holley valve covers with 1 bolt on the coils for about 5 years now, not a single problem, actually it's an advantage, easier and faster to remove coils when working on that area

SmoothFRC

_zebra

or you could clean it up altogether with a relocate

Rkreigh

I took a grinder and opened up the bolt holes on both side and they bolt in just fine now with a little washer. I didn't like the "one hole look" and it was a simple mod.

Like advice for remote mounting, pulling the fender seems daft and puts the coils in a spot that's hard to maintain. Plenty of room in other spots.

I'm looking to relocate the battery and use that space on one side and make a box for the other side that snugs up under the brake.

The LSX (3-9) coils of the 510 variety are high quality and cheap, and with the right wiring harness are plug and play so I'll upgrade down the road.

evileight

making 1k+ on ls6 coils and my tuner has not complained. As far as I can tell they are original 23 year old 40k mile units.

Rkreigh

when you look at the raw numbers, the truck round coils with heat sink and the newer 510 coils make more energy

but you can only light it but so good and if the ls1 coils work it's hard to argue success

the coil on plug stuff is so much better than old style stuff that it's pretty hard to blow out the candle

run a narrow spark gap and should be good to go. I switched back to my ls6 coils as I liked the look better and the car runs great with them

I trimmed the ears and put them on the holley covers and they look great!!! Thinking of the 510 coils as the vendor does a better job of painting or powdercoating than I did and they are indeed a hotter coil

I would guess that until you are up in the big spank area over 1200-1400 before the ls1 coils have trouble. Amazing!!