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6/27/11 10:07pm - Original Message: 'MSD IGNITION BOXES'
eddie20875 Lifetime Member
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Lanoka Harbor, NJ - USA

Vette(s):
1975 metallic blue coupe with t-tops,L48, t/t steering, black leather interior. 1990 L98, white/red leather interior, auto,a/c

Joined: 12/21/2006
Posts: 828
i see a lot of cars with the msd boxes in them and everyone says they work great. i understand that you have to wire it in to the distributor and the module is bypassed. besides the coil rotor and cap, is there anything else it uses or doesn't use, i.e the pickup coil,etc? thanks for any info

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6/27/11 11:01pm - Reply: 'MSD IGNITION BOXES'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19447
I saw you posted this at C4VR...
I haven't dealt with an MSD box in a hunnert years...I don't remember what all they entail anymore, but I'm pretty sure you'll need to use the original pole piece(pick-up coil), and prolly an MSD specific coil....
Hopefully someone that actually has one will chip in with some info.


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Joel Adams
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6/28/11 10:09am - Reply: 'MSD IGNITION BOXES'
Gunslinger
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
I have an MSD 6A in my '69 but since I don't have HEI I really can't answer your question on wiring.  The only thing I noticed after installing and opening the spark plug gap to .040" is slightly easier starting...if there's any better power or performance otherwise I really can't feel it.  Maybe it can be measured on a scope or computer but not by the seat of the pants dyno.  

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6/28/11 12:53pm - Reply: 'MSD IGNITION BOXES'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19447
Dwain(longhorn294) had an MSD6 box on his car before...don't know if he still do or not, but he did have the destuctions, and wiring info. I made copies of it all once, but it got fried when the 'puter I had at the time took a doo-doo. I MAY have saved it on a disc somewhere. I'll look this eve, if no-one else can help.

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Joel Adams
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6/28/11 5:32pm - Reply: 'MSD IGNITION BOXES'
anips
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sonoma, CA - USA

Vette(s):
72 LT-1 AC coupe,69 l-36 coupe

Joined: 8/9/2002
Posts: 783
I never had any luck with C.D. systems, and when they go out on ya  just call the "roll back" to come and get ya cause you ain't gona fix it on the  road unless you are carring a spare, another thing CD boxes don't  like is heat, might want to consider mounting the box inside the corkpit, also you may also pick a buzz in the audio sys., other than that alot of people like em.

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6/28/11 9:45pm - Reply: 'MSD IGNITION BOXES'
eddie20875 Lifetime Member
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Lanoka Harbor, NJ - USA

Vette(s):
1975 metallic blue coupe with t-tops,L48, t/t steering, black leather interior. 1990 L98, white/red leather interior, auto,a/c

Joined: 12/21/2006
Posts: 828
well today i finally got the answer. never thought of it until today, i called the msd tech line. the tech told me that it also does not use the pickup coil. as joel pointed out, i had a problem with my 90. figured it was the pickup coil (replaced module first)and being it was twenty years old i ordered a rebuilt one. installed it and car ran great for about 10 minutes and quit again.

i have a msd 6al box and was considering whether or not to install it but no one could give me the answer about pickup coil. got a replacement for the replacement and installed it tonite and car runs perfect. ran it for about half hour, shut it off. restarted after a bit let it run and then took it for a ride and still is running great.

thanks for all the imput.


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6/28/11 10:31pm - Reply: 'MSD IGNITION BOXES'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19447
So, you think it "fixed" now? Sure hope so. It's getting to where you just can't really trust anything you buy anymore...especially electronic stuff.



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Joel Adams
C3VR Lifetime Member #56    
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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6/29/11 6:15am - Reply: 'MSD IGNITION BOXES'
eddie20875 Lifetime Member
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Lanoka Harbor, NJ - USA

Vette(s):
1975 metallic blue coupe with t-tops,L48, t/t steering, black leather interior. 1990 L98, white/red leather interior, auto,a/c

Joined: 12/21/2006
Posts: 828
got to think positive on this. it just got to me after going thru the pain of replacing the distributor to get a defective one. understand that's the chance with a rebuilt one but new ones cost a lot more. keeping my fingers crossed.

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6/29/11 1:40pm - Reply: 'MSD IGNITION BOXES'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19447
ME fingers and tootsies are crossed, also! Ya never know....it's weird how one will work fine, and the next one won't make it out of the driveway. They just don't make 'em like they used to...



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Joel Adams
C3VR Lifetime Member #56    
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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6/30/11 7:46am - Reply: 'MSD IGNITION BOXES'
lukesvette Lifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.

Joined: 5/18/2004
Posts: 6804
Sorry to be a Johnny come lately on this topic. Dave, If you decide to install the MSD, spin by my house. They are simple to install. It does bypass the module and it basically manipulates the power from your existing coil. You can use your current HEI coil, but if it's aged, I'd suggest getting a new one.

Paul


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7/1/11 12:14pm - Reply: 'MSD IGNITION BOXES'
roadbiker
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Powder Springs, GA - USA

Vette(s):
1981 2-tone Claret. 4spd transmission, cloth interior, Gymkanna suspension, Glass T-Tops, A/C, Alloy Wheels, 26,000 original miles, prize-winning car in new condition.

Joined: 8/5/2008
Posts: 39
I have an '81 with the MSD System.  My installation was part of the complete disconnection of the Chevy ECM.  I replaced the Chevy HEI Distributor with the MSD Distributor, Installed the Spark Box, and changed the exhaust system to Hooker Headers and a custom fitted, X-Pipe Exhaust (stock mufflers). I also replaced the carburetor and Intake Manifold with Edlebrock Performer components and just installed MSD 8mmm Ignition Wires. The car has never run better. It now runs and sounds like a Corvette is supposed to. Plus the engine looks nice and neet without all of the horrible plumbing and the ugly pump for the emission control system. It wasn't cheap, but it was well worth it.
 
Jim


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