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Topic: msd ignition

in Forum: C3 Engines


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msd ignition (1/9)
 5/12/10 10:12pm
eddie20875Lifetime 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 have heard a lot of good feedback on the msd ignition. was thinking of installing one in my 75. any opinions on this? also, does anyone know if it would be installable in my 90 or would it interfere with the computer? thanks

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THE DYNAMIC DUO

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msd ignition (2/9)
 5/12/10 10:24pm
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484

I went with an MSD HEI unit on my '79 after the Mallory left me stranded. It smoothed it out at idle and has given me trouble free driving ever since. I think it stands up to the C3 heat better.

I'd be willing to bet MSD has a unit that would work on the '90, but don't quote me on that. Summit or JEGS could set the record straight.

Let us know what you do on both.
Kevin 
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msd ignition (3/9)
 5/12/10 10:34pm
Okie DudeLifetime Member
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Eastern Oklahoma County, OK - USA

Vette(s):
1980 Black L48 T-Tops

Joined: 1/3/2006
Posts: 1560

I have the MSD Streetfire in the '80 stabbed into a 300hp crate backed up by a 700R4 and have had ZERO issues since I changed over from the General's.  Wouldn't have it any other way!
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msd ignition (4/9)
 5/12/10 10:37pm
eddie20875Lifetime 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 should have been more specific. i meant to say the 6al control box that you wire into the system. it does not replace the whole distributor just controls the spark. thanks for your quick response.

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THE DYNAMIC DUO

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msd ignition (5/9)
 5/12/10 11:05pm
Okie DudeLifetime Member
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Eastern Oklahoma County, OK - USA

Vette(s):
1980 Black L48 T-Tops

Joined: 1/3/2006
Posts: 1560

Sorry dude, didn't use that box, did the stab swap of the distributor.

Let us know how it goes and how it works.
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msd ignition (6/9)
 5/13/10 7:35am
gurtz
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baton rouge, LA - USA

Vette(s):
1981 dark metallic blue, dark doeskin leather interior, mirrored glass T Tops, 330hp/350ci GMPP crate engine, billeted aluminum serpentine system, Dewitts with dual spalls

Joined: 8/12/2006
Posts: 391

put new MSD in both my oldies, no box.  Cars runs great!
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msd ignition (7/9)
 5/13/10 8:10am
lukesvetteLifetime 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: 6812

I have been using MSD boxes in HP motors since the 80s. Great fuel efficiency and a "supposed" HP gain, although most likely not noticeable. The plugs also come out the cleanest out of any ignition system I have used in the past...
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msd ignition (8/9)
 5/13/10 10:35pm
kstyerLifetime Member
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CUYAHOGA FALLS, OH - USA

Vette(s):
1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Joined: 12/2/2003
Posts: 6424

I have the MSD in the complete HEI distributor replacement unit.  It has all the features of the box contained in the dist.  I love it.  Darn thing works nice, and the exhaust is much cleaner with it in place.
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msd ignition (9/9)
 5/14/10 4:17pm
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 installed in my '69, which already has transistor ignition.  The only real difference I noticed was somewhat better starting...no increase in performance that I can feel, but with a 3-deuce 427 L71 with an L88 cam it would take a significant change to feel it.
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