MSD coil pics
MSD coil pics As promised, Pics are attached, I have side by side comparison pics of the stock vs MSD, but they are on my camera at home. I can post those when I get home.
The outside pics are of the car in race trim which is the same as street trim right now.
The outside pics are of the car in race trim which is the same as street trim right now.
Originally Posted by spy2520
lets see some gains!!! i hope they gain you something because alot of people say they arent better than stock and i dont wanna believe that yet.
Yeah, people who have never seen one except in a picture, let alone tried one out.
Those are the ones I listened to.... not! I've heard from all of them already. I do agree with the naysayers on some aspects, yes, there are cars running fast on stock coils. Yes, the stock coils are good, but that doesn't mean that someone can't come up with something better. The stock LS1 heads are great! but lots of people are changing those..
I do have some driving impressions posted previously, They did make a VERY noticable difference in some areas, particularly all kinds of vibrations I was getting ever since I switched to a Polyurethane trans mount, that I assumed were drivetrain related.. are now totally gone. The car is smooth as silk on the freeway in 6th, where I couldn't make out what was in my rear view mirror before from vibrations, is now no longer a problem.
A motor vibration I had past 6000 RPM.. gone, 5th gear WOT vibration was pretty bad before. I assumed it was because of a missing weight off my driveshaft. That is now completely gone as well.
The car now accelerates very well in fifth, where all it did before was vibrate and accumulate momentum. But as far as my 1/4 goes. I don't believe in the butt-ometer or "my needle moves faster now". I won't be able to put the car back on the dyno just to get a reading with these, but I will go to US131 Motorsports Park this weekend and see if I can run any better...
Or hit the wall from lack of traction which seems more likely at that track, lately.
Maybe I will just make the 2 hour trip North to Stanton. 
Last edited by transam1998; Oct 13, 2005 at 12:13 PM.
Originally Posted by transam1998
They did make a VERY noticable difference in some areas, particularly all kinds of vibrations I was getting ever since I switched to a Polyurethane trans mount, that I assumed were drivetrain related.. are now totally gone. The car is smooth as silk on the freeway in 6th, where I couldn't make out what was in my rear view mirror before from vibrations, is now no longer a problem.
A motor vibration I had past 6000 RPM.. gone, 5th gear WOT vibration was pretty bad before. I assumed it was because of a missing weight off my driveshaft. That is now completely gone as well.
A motor vibration I had past 6000 RPM.. gone, 5th gear WOT vibration was pretty bad before. I assumed it was because of a missing weight off my driveshaft. That is now completely gone as well.
Last edited by FstBlkz28; Oct 13, 2005 at 12:29 PM.
Yes, I wonder now how many people's vibrations are from a motor that is slightly misfiring at cruise, as it seems mine was.
[QUOTE=FstBlkz28]
[QUOTE=FstBlkz28]
Originally Posted by transam1998
They did make a VERY noticable difference in some areas, particularly all kinds of vibrations I was getting ever since I switched to a Polyurethane trans mount, that I assumed were drivetrain related.. are now totally gone. The car is smooth as silk on the freeway in 6th, where I couldn't make out what was in my rear view mirror before from vibrations, is now no longer a problem.
A motor vibration I had past 6000 RPM.. gone, 5th gear WOT vibration was pretty bad before. I assumed it was because of a missing weight off my driveshaft. That is now completely gone as well.
QUOTE]
That is very interesting. That'd alone would be worth the swap for me even if there were not performance gains.
A motor vibration I had past 6000 RPM.. gone, 5th gear WOT vibration was pretty bad before. I assumed it was because of a missing weight off my driveshaft. That is now completely gone as well.
QUOTE]
That is very interesting. That'd alone would be worth the swap for me even if there were not performance gains.
they are too much money, but they may be worth it. lol i should rephrase that they are alot of money, maybe not too much if there are benefits. What transam1998 said about vibration seems to make sense as well.
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Joined: Sep 2005
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From: Bucks County, Pa.
[QUOTE=transam1998]Yes, I wonder now how many people's vibrations are from a motor that is slightly misfiring at cruise, as it seems mine was.
This is exactly what the naysayers are going to bring up, i.e.; that you had one or more bad coilpacks, and replacing them with even the new stock ones would have netted you the same reductions in vibration. Hopefully, they DO give a performance increase over even brandy spanking new stock coils.
This is exactly what the naysayers are going to bring up, i.e.; that you had one or more bad coilpacks, and replacing them with even the new stock ones would have netted you the same reductions in vibration. Hopefully, they DO give a performance increase over even brandy spanking new stock coils.
Originally Posted by libertine1015
Did you ever log for misfires?? Interesting problem. Did you change anything else like plugs or wires??
Mine were about $75.00 apiece
from Thunder Racing and I bought the only set they had in stock I never logged any misfires, the only problem we say was a dip in the torque curve which was below my shiftpoint anyway, and after 6000 RPM, the PCM was pulling timing a little and the guys at EPP weren't sure if it was false knock or what, so they dumbed down the knock sensor and told me I should run better than 93 octane, so I am mixing 104 nolead with Torco Mach Accelerant.
I never had a check engine light or a misfire code. Odd animals, these LS1s
The only thing I changed last night were coils. The plugs I will change in the spring, I will onle be driving the car for another week or so this year, The MSD wires are 1 year old.
The car did dyno good power and ran strong 1/4 mile traps despite (what might turn out to be) some misfires.
Yep, that possibility is also in the back of my mind. It never felt like one misfiring cylinder was causing vibrations, they were high enough frequency, that it honestly felt like I had some drivetrain out of balance problem. Makes me wonder if there were many cylinders that weren't entirely happy.
[QUOTE=dailydriver]
[QUOTE=dailydriver]
Originally Posted by transam1998
Yes, I wonder now how many people's vibrations are from a motor that is slightly misfiring at cruise, as it seems mine was.
This is exactly what the naysayers are going to bring up, i.e.; that you had one or more bad coilpacks, and replacing them with even the new stock ones would have netted you the same reductions in vibration. Hopefully, they DO give a performance increase over even brandy spanking new stock coils.
This is exactly what the naysayers are going to bring up, i.e.; that you had one or more bad coilpacks, and replacing them with even the new stock ones would have netted you the same reductions in vibration. Hopefully, they DO give a performance increase over even brandy spanking new stock coils.
I may not be able to help you much here, The car spends probably 40% of it's running life at WOT. But I will let you know.
Originally Posted by technical
I'm interested in any fuel mileage improvements, keep us posted.
Originally Posted by Sharpe
Apiece? As in $75 x 8? As in $600? Oh my God! 
Your math is entirely spot on. These cost me almost as much as my carbon fiber driveshaft (Which I just pulled off the porch)
It came with a yoke and ujoints
I can take basic wrenches with me and make some passes with the aluminum, then change and make passes with the carbon fiber. The ujoints seem a bit stiff, though. Not sure how much driving it will take to free them up some.
Wouldn't it suck if I went slower after all this money spent?
Originally Posted by transam1998
The only thing I changed last night were coils. The plugs I will change in the spring, I will onle be driving the car for another week or so this year, The MSD wires are 1 year old.
i do know that W2W used the stock coil packs on Casper, so that shoud say something. yes these may have fixed ur problem, but that might have been becuase u had 1 or more bad stockers.
Originally Posted by Phoenix57
i do know that W2W used the stock coil packs on Casper, so that shoud say something. yes these may have fixed ur problem, but that might have been becuase u had 1 or more bad stockers.
Uh oh! here's one! Theres no way Casper might actually run better with MSD coils because nothing can out do the almighty stock GM coil! 
Yup, I had 6 stock coils go bad at once!! and the car still ran and didn't set any codes!!!
In all seriousness, though. Yes I have already acknowlegedd that I could have had a bad one, or several bad ones, although, these would have had to have been bad from the time I bought the car 2 years ago. The car started out running 13.5 to 13.6 @ 105 mph totally stock, so I am sure it was fine when I bought it. And the car just kept getting faster, not slower and if I suddenly had a coil or 2 go bad enough to cause misfires and shakes, I would have noticed a performance drop somewhere, don't you think?
But, then there is no way for me to tell you this for sure unless I can bench test them, I am looking for this possibility.
Someone want a set of stock coils to throw on their car to see if it runs worse? They are certainly NOT going back on my car.