Is there much of a difference with performance coil packs
Thread Starter
Teching In
Joined: Aug 2021
Posts: 8
Likes: 0
Is there much of a difference with performance coil packs I'm gonna change mine since I'm giving it a tune up and was thinking about the performance ones. Is there a difference really and would I need to adjust anything
I was under the impression the LS1 had the bottom of the rung coil pack. The truck was better, the LS3 even better, and there's that truck pack with the external heat sink (Mitsubishi?). Pretty much anything was an upgrade from an F-body. And the other GM coils were quite good.
It's been 10 years since I looked into this so I don't remember a lot of the details.
It's been 10 years since I looked into this so I don't remember a lot of the details.
Trending Topics
"Most users report an18HP increase with a 500 HP engine, this is WHP.
They state better Gas Mileage, better throttle responce.
The coil dwell should be increased, this is easy with the Holley ECU.
SPG increased to .060"
This is what I heard!
They state better Gas Mileage, better throttle responce.
The coil dwell should be increased, this is easy with the Holley ECU.
SPG increased to .060"
This is what I heard!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo Very interesting to hear a 500 hp engine may make more power and have better throttle response due to coils. I wonder if anyone has any dyno graphs with ls engines showing this
TECH Senior Member
Joined: Jun 2016
Posts: 22,306
Likes: 3,621
From: Central Cal.
TECH Enthusiast
Joined: Aug 2021
Posts: 507
Likes: 190
Stronger Spark Energy = MPG increase There are but a few changes you can make to your engine that can save money, as in a MPG increase, and thus pay for themselves.
The IGN-1A coil will output 280 mJ of Spark Energy @ 8 ms Coil Dwell
This is four times the energy of a "580", "585" Delphi Coil @ 70 ish mJ.
A SPG of .060" will allow for an Arc Duration of almost 3 micro seconds.
This LONG spark is very good for lower RPM engine operation.
The IGN-1A coil will output 280 mJ of Spark Energy @ 8 ms Coil Dwell
This is four times the energy of a "580", "585" Delphi Coil @ 70 ish mJ.
A SPG of .060" will allow for an Arc Duration of almost 3 micro seconds.
This LONG spark is very good for lower RPM engine operation.
I bookmarked this a couple years go. Seemed like a good thread at the time.
https://ls1tech.com/forums/generatio...l#post20111181
https://ls1tech.com/forums/generatio...l#post20111181
TECH Enthusiast
Joined: Aug 2021
Posts: 507
Likes: 190
GEN IV Coil I too make a GEN-IV coil, wicked up by 10% and a heat sink over the IGBT.
Coil cost is the same, output is 87 mJ @ 4.5 ms Dwell.
They are sold as a direct replacement for use on N/A engines.
Many here state a GM coil is FINE when the SPG is reduced to .018"-.022"
The IGN-1A SPG should be .045"- .060" depending on MAP.
NOT MANY speak about Arc Duration, the MOST important item after a spark has happened.
Just ask Recardo in Italy
Coil cost is the same, output is 87 mJ @ 4.5 ms Dwell.
They are sold as a direct replacement for use on N/A engines.
Many here state a GM coil is FINE when the SPG is reduced to .018"-.022"
The IGN-1A SPG should be .045"- .060" depending on MAP.
NOT MANY speak about Arc Duration, the MOST important item after a spark has happened.
Just ask Recardo in Italy
Banned
Joined: Oct 2020
Posts: 1,984
Likes: 682
As noted, the avg guy na Won't see a huge jump in Hp. But Major Boost applications Will.
Ole topic and Lance wasn't needed but was Referenced... The People have spoken.
https://www.yellowbullet.com/threads...d514a.1839026/
Ole topic and Lance wasn't needed but was Referenced... The People have spoken.
https://www.yellowbullet.com/threads...d514a.1839026/
