LS1 coil packs on LT1 car
Advanced Tech Moderator
Joined: Aug 2001
Posts: 2,262
From: Nashville
Here are a few threads i found doing a search that answer your questions (there are many more)-
http://web.camaross.com/forums/showt...threadid=25146
http://web.camaross.com/forums/showt...threadid=23617
http://web.camaross.com/forums/showt...hreadid=128678
http://web.camaross.com/forums/showt...hreadid=131946
Nonetheless, this should be in LT1 Tech.
http://web.camaross.com/forums/showt...threadid=25146
http://web.camaross.com/forums/showt...threadid=23617
http://web.camaross.com/forums/showt...hreadid=128678
http://web.camaross.com/forums/showt...hreadid=131946
Nonetheless, this should be in LT1 Tech.
Registered User
Joined: Feb 2000
Posts: 1,104
From: Seacoast, N.H.
There are a few alternatives out there if you want to switch to LS-1 coil packs.
I first tried using a MSD cam sync and crank trigger but had issues with getting it to run right so I ended up scrapping that system and now am sporting an OSCAR. I am running around with the OSCAR prototype and once we get some built these will be for sale. You can either run a FAST system or a Digital 7 (windows based ignition sytem) but either way you will need a Edist box
The good thing about OSCAR is that there are no RPM limitations
http://www.geocities.com/marcs94z28/cranktrigger.html
http://www.geocities.com/marcs94z28/383coilpacks.html
Marc
I first tried using a MSD cam sync and crank trigger but had issues with getting it to run right so I ended up scrapping that system and now am sporting an OSCAR. I am running around with the OSCAR prototype and once we get some built these will be for sale. You can either run a FAST system or a Digital 7 (windows based ignition sytem) but either way you will need a Edist box
The good thing about OSCAR is that there are no RPM limitations
http://www.geocities.com/marcs94z28/cranktrigger.html
http://www.geocities.com/marcs94z28/383coilpacks.html
Marc
Administrator
Joined: Nov 1998
Posts: 71,122
From: Hell was full so they sent me to NJ
Originally posted by 1st and goal
Opti's are not good for high rpm applications and this was designed so you can rev the **** out of it and not look back
Marc
Opti's are not good for high rpm applications and this was designed so you can rev the **** out of it and not look back
Marc
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Registered User
Joined: May 2000
Posts: 799
From: Redmond, WA
Originally posted by 1st and goal
I first tried using a MSD cam sync and crank trigger but had issues with getting it to run right so I ended up scrapping that system and now am sporting an OSCAR.
I first tried using a MSD cam sync and crank trigger but had issues with getting it to run right so I ended up scrapping that system and now am sporting an OSCAR.
When you say "tried using an MSD cam sync" are you referring to the new MSD Digital CPC cam sync stub which mounts in the distributor hole, or to the sensor which was mounted in your front timing cover?
The reason I ask is because my engine is being buttoned up as-is and sent up (eventually, at any rate...), and that includes an MSD crank trigger and the new Digital CPC stub in the back, along with the FAST eDist and LS1 coil packs. They haven't been fully tested, though. The shop which botched the front cover modification also sent an incorrectly wired harness for the eDist/coil pack setup, which Mark apparently fixed or had fixed, but there are no guarantees that I'm getting a fully functional system, if you know what I mean.
My concern is that my engine is going to show up with a hodge-podge ignition system that hasn't been fully tested or used (as far as I know) by anyone else. I'd like to know what your problem was with the cam sync and whether or not it relates to my setup at all, so I'll at least have some advance warning if it's time to go shopping again once the engine finally does shows up.
Thanks!
Registered User
Joined: May 2000
Posts: 799
From: Redmond, WA
Originally posted by Injuneer
What do you perceive the upper RPM limit of the Opti to be? I haven't pushed it that far (7,400rpm) but I know that George Baxter pushed his 1,125HP LT1 well over that with the Opti/MoTeC/LS1 coils, same as mine. I have actually seen the MoTeC record more than 8,000rpm from the Opti under some conditions that I would rather not see again....
What do you perceive the upper RPM limit of the Opti to be? I haven't pushed it that far (7,400rpm) but I know that George Baxter pushed his 1,125HP LT1 well over that with the Opti/MoTeC/LS1 coils, same as mine. I have actually seen the MoTeC record more than 8,000rpm from the Opti under some conditions that I would rather not see again...
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Registered User
Joined: Nov 2001
Posts: 3,515
From: Kansas
nobody has mentioned the LTCC yet. its relatively cheap and works with the stock PCM.
Marc... how do those LS1 coils fire? they arent hooked up in your pics from what i could tell. the only setback i am having with LS1 coils is with the LTCC you have to run 8 seperate wires to every coil and its really not "pretty" lookin so i was wondering how you wires yours up.
also a cam sync and crank trigger is not going to appeal to most people when they see how much it will cost them and the amount of work envolved to get it working properly. its definitely the most complicated solution available.
and lastly whered you get those valve covers?
Marc... how do those LS1 coils fire? they arent hooked up in your pics from what i could tell. the only setback i am having with LS1 coils is with the LTCC you have to run 8 seperate wires to every coil and its really not "pretty" lookin so i was wondering how you wires yours up.
also a cam sync and crank trigger is not going to appeal to most people when they see how much it will cost them and the amount of work envolved to get it working properly. its definitely the most complicated solution available.
and lastly whered you get those valve covers?
Registered User
Joined: Feb 2000
Posts: 1,104
From: Seacoast, N.H.
Brad,
I guess I need to take a current picture so you can see all the wires hooked up I am using factory LS-1 wiring harnesses and those are hooked up to a Edist box from FAST
Agree on the cam sync / crank trigger being costly and a PITA.
The valve covers are Moroso, I'll have to look for the part number when I get home as I don't have it handy here at work.
Fred,
I had the understanding that opti's (just plain old opti's) were good for 6500ish rpm.
Chevy94C,
Final pricing has not been established yet but it will be reasonably priced and a bolt on assembly with clear instructions of how to hook it up. Each unit will be pre tested before being shipped. I sent you an "E" mail regarding our discussion at the track the other day.
Jimlab,
I was using the MSD cam sync that screwed into the timing cover not the CPC stud.
The problem with the cam sync that I was having was related to the shop that ****ing sucks (hmmm, wonder who that is
) had positioned the magnet in the wrong spot so the signals would overlap and cause 1,8 and 2 to stop firing until it would re-index itself and then it would fire and drop the three cylinders again. Also the lettering on the face of the Cloyes timing gear was causing interference as well. After four months of being dicked around by peckerhead (the shop that sucks) and after dumping a few grand into this setup and getting no results other than having it run on 5 cylinders I yanked it outa there and brought it to a shop that fixed it and got it to run but in doing so we started talking about doing this a better way and hence OSCAR was born
Some other concerns were that when the car would get warm the frequency and harmonics would change and it would run rough in a few cells and get almost surgy. When we started testing the old system it was only giving .2 volts from the cam sync and the Edist requires .7 volts to work and the wave form takes 25* so there is not much room for error
OSCAR does not have these issues, it gives great voltage and does not have a slow wave form. I do not know the technical term for it but when the little cursor goes by the sensor the wave form is straight up and then down.
This is a nice system that fit behind the stock water pump and will clear an ATI balancer.
Marc
I guess I need to take a current picture so you can see all the wires hooked up
I am using factory LS-1 wiring harnesses and those are hooked up to a Edist box from FASTAgree on the cam sync / crank trigger being costly and a PITA.
The valve covers are Moroso, I'll have to look for the part number when I get home as I don't have it handy here at work.
Fred,
I had the understanding that opti's (just plain old opti's) were good for 6500ish rpm.
Chevy94C,
Final pricing has not been established yet but it will be reasonably priced and a bolt on assembly with clear instructions of how to hook it up. Each unit will be pre tested before being shipped. I sent you an "E" mail regarding our discussion at the track the other day.
Jimlab,
I was using the MSD cam sync that screwed into the timing cover not the CPC stud.
The problem with the cam sync that I was having was related to the shop that ****ing sucks (hmmm, wonder who that is
) had positioned the magnet in the wrong spot so the signals would overlap and cause 1,8 and 2 to stop firing until it would re-index itself and then it would fire and drop the three cylinders again. Also the lettering on the face of the Cloyes timing gear was causing interference as well. After four months of being dicked around by peckerhead (the shop that sucks) and after dumping a few grand into this setup and getting no results other than having it run on 5 cylinders I yanked it outa there and brought it to a shop that fixed it and got it to run but in doing so we started talking about doing this a better way and hence OSCAR was born Some other concerns were that when the car would get warm the frequency and harmonics would change and it would run rough in a few cells and get almost surgy. When we started testing the old system it was only giving .2 volts from the cam sync and the Edist requires .7 volts to work and the wave form takes 25* so there is not much room for error
OSCAR does not have these issues, it gives great voltage and does not have a slow wave form. I do not know the technical term for it but when the little cursor goes by the sensor the wave form is straight up and then down.
This is a nice system that fit behind the stock water pump and will clear an ATI balancer.
Marc