C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

‘71 LS-5 MSD Ignition Question

Thread Tools
 
Search this Thread
 
Old 01-16-2018, 09:55 PM
  #1  
Al T
Burning Brakes
Thread Starter
 
Al T's Avatar
 
Member Since: Jan 2009
Location: Alberta/Missouri....... depending when.
Posts: 796
Received 30 Likes on 23 Posts

Default ‘71 LS-5 MSD Ignition Question

As part of the resurrection of my ‘71 LS-5 coupe, I’m in the process of trying to clean up a mess of an engine compartment and I’d like to get rid of the MSD ignition box and coil........ as well as freeing up the space for the soon to be installed (when I get one) wiper door vacuum canister. Can I use this MSD distributor with a conventional coil while I look for a OEM distributor?

Thanks in advance.

Allan
Attached Images    
Old 01-16-2018, 10:08 PM
  #2  
TimAT
Le Mans Master
 
TimAT's Avatar
 
Member Since: Oct 2006
Location: Gladstone MO
Posts: 7,121
Received 424 Likes on 385 Posts
C3 of Year Finalist (appearance mods) 2019

Default

Sort of. The distributor you have is a magnetic pickup. That sends the signal to the MSD box that it's time to fire the coil. The MSD box I don't think really cares what coil it fires, as long as it sees a coil out there. But also knowing how MSD boxes can be a little finicky, it may not last too long. You'll need to look up the specs on the box and see if there's anything on how much load the coil should have.
There is a spot on the firewall to the left of the distributor you can mount that coil too- At least there is on a 69.
Old 01-16-2018, 10:44 PM
  #3  
Al T
Burning Brakes
Thread Starter
 
Al T's Avatar
 
Member Since: Jan 2009
Location: Alberta/Missouri....... depending when.
Posts: 796
Received 30 Likes on 23 Posts

Default

I really just want to get rid of the entire MSD system. The original ignition system worked just fine and I’d like to put it back to that.
Maybe someone has a rebuilt/good condition distributor and correct coil they’d like to trade for the entire MSD system? Engine was May 21, 71 assembly.
Old 01-19-2018, 11:57 AM
  #4  
TimAT
Le Mans Master
 
TimAT's Avatar
 
Member Since: Oct 2006
Location: Gladstone MO
Posts: 7,121
Received 424 Likes on 385 Posts
C3 of Year Finalist (appearance mods) 2019

Default

Send a PM to Big2Bird- he may be able to help you.
Old 01-19-2018, 06:06 PM
  #5  
blue427
Burning Brakes
 
blue427's Avatar
 
Member Since: Dec 2003
Posts: 1,101
Received 128 Likes on 102 Posts

Default

If you're going back to a point set up just make sure your resistance wire is there and the proper length.
Old 01-19-2018, 07:08 PM
  #6  
Al T
Burning Brakes
Thread Starter
 
Al T's Avatar
 
Member Since: Jan 2009
Location: Alberta/Missouri....... depending when.
Posts: 796
Received 30 Likes on 23 Posts

Default

Did a ‘71have a ballast resistor or wire?
Old 01-19-2018, 08:49 PM
  #7  
BLUE1972
Race Director
 
BLUE1972's Avatar
 
Member Since: Oct 2008
Location: FARMINGDALE N..Y.
Posts: 15,955
Received 1,130 Likes on 733 Posts

Default

I would go with a stock distributor and an electric breaker less conversion. The conversions fit into the cap and looks stock.

The car runs better and holds the tune up much longer.

Jegs, electric limited and others sell them.
Old 01-20-2018, 06:32 PM
  #8  
TimAT
Le Mans Master
 
TimAT's Avatar
 
Member Since: Oct 2006
Location: Gladstone MO
Posts: 7,121
Received 424 Likes on 385 Posts
C3 of Year Finalist (appearance mods) 2019

Default

71 had a resistor wire built into the engine harness. It's possible that it may still be in the harness- I suspect most people just clipped it off where it breaks out of the harness and ran a new wire from inside.

Last edited by TimAT; 01-20-2018 at 06:35 PM.
Old 01-21-2018, 07:46 AM
  #9  
terrys6t8roadster
Melting Slicks
 
terrys6t8roadster's Avatar
 
Member Since: May 2012
Location: Allenton Wisconsin
Posts: 2,191
Received 337 Likes on 280 Posts

Default

Some one is selling a BBC vette dist in the parts for sale, yesterday or the day before. T
Old 01-21-2018, 12:00 PM
  #10  
Al T
Burning Brakes
Thread Starter
 
Al T's Avatar
 
Member Since: Jan 2009
Location: Alberta/Missouri....... depending when.
Posts: 796
Received 30 Likes on 23 Posts

Default

Thanks for the heads up, but I was actually able to find a distributor from a fellow member which I believe is date code correct. Thanks Dan!!!
May 5, 1971 distributor for a May 21, 1971 engine assembly date?

I’m going to get the car running with the existing system and then remove all the MSD components and install the OEM ignition. I’ll list the complete MSD set up with wires in the for sale section when I get that done.
Attached Images   

Last edited by Al T; 01-21-2018 at 03:34 PM.

Get notified of new replies

To ‘71 LS-5 MSD Ignition Question




Quick Reply: ‘71 LS-5 MSD Ignition Question



All times are GMT -4. The time now is 09:34 AM.