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Topic: MSD HEI Upgrade

in Forum: C3 Engines

MSD HEI Upgrade

Posted: 7/1/09 8:50am Message 11 of 15
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Powder Springs, GA - USA
Joined: 8/5/2008
Posts: 42
Vette(s): 1981 2-tone Claret. 4spd transmission, cloth interior, Gymkanna suspension, Glass T-Tops, A/C, Alloy Wheels, 28,000 original miles, prize-winning car in new condition.
I have the complete MSD set-up on my '81. It was an important part of the project to completely eliminate the ECM that was integrated with the stock ignition system (and car, and exhaust, etc.). I have the 6A High Spark box mounted inside the driver side fender, near the vent and out of sight. My goal was to maintain as much of a stock look as possible. The only hint is that you can see the red MSD distributor cap under the black ignistion shielding.
 
I had a lot of other work done at the same time, so I can't attribute any specific performance improvements to the MSD system, but the car starts right up and idles nicely. I did notice, however, that the car runs best if I let it warm up for a few minutes when it's cold. If I don't, it tends to run a little rough.
 
Jim



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MSD HEI Upgrade

Posted: 7/1/09 4:52pm Message 12 of 15
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Manteca, CA - USA
Joined: 11/20/2005
Posts: 3623
Vette(s): 1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed
Thanks for the education guys. I've been considering going that route myself.


MSD HEI Upgrade

Posted: 7/1/09 9:46pm Message 13 of 15
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Grapevine, TX - USA
Joined: 8/26/2006
Posts: 1522
Vette(s): 1972 LT-1 convertible with factory air. 2017 Black Rose Grand Sport convertible.
I think MSD now has a distributor that incorporates the 6AL box inside the distributor itself.  No extra box and wires.


   

MSD HEI Upgrade

Posted: 7/2/09 4:36am Message 14 of 15
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baton rouge, LA - USA
Joined: 8/12/2006
Posts: 391
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
Just recently, mine started acting up, so I pulled her, brought it to a ignitiion dude in New Orleans and the mechanical advance had locked up, go figure.
 
He took it apart, cleaned, lubed and reset the curve and all is well again, so you never know.
 
The thing worked well with no issues for 5 years!



MSD HEI Upgrade

Posted: 7/4/09 5:40am Message 15 of 15
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HARROD, OH - USA
Joined: 7/25/2003
Posts: 335
Vette(s): 1976 - L-48 Auto, A/C, AM/FM, Power Windows, Tilt Telescopic Wheel, Factory Aluminum Wheels, Inferno Red Matalic Custom paint with Black Leather Interior.
Love the quick starting and cleaner burn in my 76 with the MSD.


in Forum: C3 Engines


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