pt2285

so upgrading to a SOS or holley coil pack, does this add any HP or anything to make the engine run better? or is it just a "check me out" upgrade?

LLLosingit

iTrader: (4)

Unless your doing some kind of exotic build then they won't make a difference, The stock coils are good for almost any build.

pt2285

DART LS3 427 stroker. so not that exotic, but yeah stockers should be just fine right?

pdxmotorhead

In a really wide handwave, stock coils pretty much are fine up to about 12:1 static, at that point you may need to start raising the current to get good ignition in the cylinder. (Plug heat selection matters) Once you get up around 15:1 static, your in to the very high current-voltage ratio and it gets fancy, or you go magneto.

Fiddling with a midget motor a couple years back that had old school points, coil distributor, when we went full upgrade on the motor (Cosworth BDA) and set it up for 100% methanol, we had to convert to a magneto to start it.. it was running at almost 17:1 at that point, at TDC it was down to like 12CC's of chamber with tall pistons. 240 lbs of compression if I recall.. 1.8 liter making over 300hp at up to 10,000 rpm... Normally aspirated with twin injector Hillborne injection,, its sang when it went by...

LLLosingit

iTrader: (4)

More than adequate. The stock coils-have been proven over 1000hp with boost.

Bowtiejoni

LS7 is 427, I can sure you factory has done their R&D with these.

pantera_efi

iTrader: (1)

Hi ALL, the Holley Smart coil (IGN-1A) is good for about 18 HP on a 500 HP engine. (bench)
I DO NOT "HIP" SHOOT as did the above posters.
My DATA is PROVEN by dyno reports, EMPIRICAL, NOT GUESSES by THOSE WHO have NEVER done a BACK/BACK test.

There are users here at LS-1 Tech of my LS-IGN-1A kit.

THEIR reports are as follows :
Better throttle response
Less Spark Advance required
Better Fuel mileage
More power "felt" through engine operational range.
More power recorded when tested on a rolling road dyno.

So I ask : Would you TRUST a person who has fitted the Holley Smart coil/IGN-1A OR a person who has NOT ?

Lance

TrikeMike

iTrader: (7)

Lance I have an honest 500rwhp 408ci LS engine that I will be putting on the chassis dyno again here shortly. It currently has stock LS1 coils on it. I would be interested in trying a set of your coils back to back on the chassis dyno for an unbiased test. The car will also be getting a .078 jet on a Stinger plate we can test the coils on as well. Please let me know if you are interested. If your coils back up the claims you are making, I will have a lot of buyers for you.

5.3LJimmy

iTrader: (10)

I would be a buyer if TrikeMike's independent testing shows a power gain.

JoeNova

Lance's coils have been tested before to show gains. They're what most of the big power individual coil guys are using (not just LS guys).

pt2285

i see that there are 2 designs for LS coils. are they interchangeable?

Double06

Lance are you talking about just the Holley or your 99891.510 LS coil for later models when doing comparisons?

TrikeMike

iTrader: (7)

Big power and non-LS guys is not what he is claiming here, he is claiming 18hp on a 500hp engine going from stock LS coils to IGN1a coils. I have no doubt in my mind that the IGN1a coils work well even in big power applications. However, I would like see some proof of gaining 18hp on a 500hp engine over a stock LS coil.

I wouldn't be able to keep these coils in stock if I could prove an honest 18hp gain per 500hp. I find it hard to believe that anyone would run any other LS coil at a heads up race if they could pick up 4% power by swapping to IGN1a.

I see Lance posting a lot on here regarding how well these coils work. I want to see if they live up to what they are claimed to be. If they will net gains of 18hp on a 500hp, I have many customers that would be lined up to buy a set.

Che70velle

iTrader: (6)

I’m glad I bumped into this thread. I have been talking to Lance about getting a set of his coils.

1989GTA

Hopefully you can to a back to back test and post the results. A lot of people would be interested in what you find out.

pt2285

who is this lance you guys speak of? i know of one lance and he's my co-worker.. and a nut job.

G Atsma

Lance Nist, of PanteraEFI, a sponsor/vendor here who has been in the performance world for decades, and has extensive knowledge of various automotive systems. He is from New Zealand, and sometimes his lines of thought runs in directions some here have a tricky time fathoming. He seems like a great guy though.

pt2285

ahh well most kiwi's often do.. i shall find this elusive man and ask him questions about his coils.

KW Baraka

iTrader: (7)

Just go to post #7 in this thread.....or go there --->> http://panteraefi.com/Home_Page.html

KW

Double06

I guess also what type of LS coil are were talking LS1 coil or the LS7 coil as a base test for the 18 hp gain.