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Old 09-29-2021, 02:38 PM
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Default MSD Digital 6+ vs Digital 6AL ??

What's the basic difference between these two boxes? I was planning on using the 6AL, but have a chance to pickup the 6+ new, cheap from a friend.

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67 Firebird Convert 455 +.060 TH400 74cc KRE d-ports piston dished 16cc H-beam rods Comp Cam 305-AH-8 cam 108* LSA 253/260 @.050 duration .577/.594 lift w/1.65 rockers Ford 9" 3.50 Detroit Locker M/T Sportsman Radials 31x18x15 on Convo Pro 15x15s
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Old 09-29-2021, 02:52 PM
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If i were you I would look for the 6al2, you get 2 rev limiters, a launch and a maximum, not much difference in money. I do not like the digital al boxes from some info I read on line, and a friend of mine being stranded on the hwy. They seem to stop working for no good reason. My 6 al2 box is 10 years strong no issues.

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Old 09-29-2021, 04:16 PM
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I had the 6AL-2 in my Falcon. It died in less than a year, and they sent me another. The car was down for awhile, and the second one lasted maybe 2 years, before it died and left me stranded on the way to a race.

Pulled a 20+ year old analog 6AL out of my parts bin, installed THAT, and never had another problem. IMHO, their quality dropped a LOT after AutoTronics sold them.

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'67 Firebird [sold], ; 11.27 @ 119.61, 7.167 @ 96.07, with UD 280/280 (108LSA/ 109 ICL)solid cam. [1.537, 7.233 @93.61, 11.46 @ 115.4 w/ old UD 288/296 108 hydraulic cam] Feb '05 HPP, home-ported "16" D-ports, dished pistons (pump gas only), 3.42 gears, 275/60 DR's, 750DP, T2, full exhaust

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Old 09-29-2021, 04:54 PM
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Quote:
Originally Posted by Lee View Post
Pulled a 20+ year old analog 6AL out of my parts bin, installed THAT, and never had another problem. IMHO, their quality dropped a LOT after AutoTronics sold them.
Have to TOTALLY AGREE with the post above,
I have 2 of the Digital Boxes:
MSD Ignition 6520 - MSD Digital-6 Plus CD Ignitions

Mine are about 15-20 years old, Never installed.
Busy with other things in life.
Any one running one of the OLDER 6520 boxes?
I also have a MSD 7 AL box (like new) that was on Marty Palbykin's 6 second
prior to him going to a MAGNETO set-up.

Any Interest. PM me as not going to post them as For Sale.

Tom V.

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Old 09-29-2021, 06:01 PM
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The asphalt Late Model car I picked up (backed int the wall) has TWO MSD systems they could switch during a race if one crapped out and they are analog.

I have known drag racers even with the old analogs have them crap out at the track and many carried spares.

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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
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Old 09-29-2021, 07:50 PM
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Agree totally Skip with that deal. Everyone (including the F-Guys) ran two systems BUT with the "potted" units, very rarely (unless
the car was crashed), was the 2nd unit ever needed. Autotronics built some nice stuff for the F-Guys but we paid more for it.

The Teams always played it safe, even with the better design and the potted parts.

In the old days, only a few had complete ignition control. Today everyone is using
the add on systems to get consistent performance pass after pass.

Tom V.

There are a few systems out there with F-1 capabilities. MoteC being one of them. Not Cheap.
https://www.motec.com.au/s-em-hundre...s-howtochoose/

Nothing WRONG with a good "Old School Digital System"

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Last edited by Tom Vaught; 09-29-2021 at 07:57 PM.
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Old 09-30-2021, 09:29 AM
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Heck I thought I was hot stuff in 1971 running a "Judson Magneto" CDI coil on my 409 Impala to keep from fouling plugs!

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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
  #8  
Old 09-30-2021, 09:50 AM
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67 455 Bird ragtop 67 455 Bird ragtop is offline
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Thanks for the feedback. I plan to mainly use this on the street. It may see the track a few times on fun days. But not on a regular basis. Just wanted to see if this was a good box to run since I can get it for only $100 new in box.

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67 Firebird Convert 455 +.060 TH400 74cc KRE d-ports piston dished 16cc H-beam rods Comp Cam 305-AH-8 cam 108* LSA 253/260 @.050 duration .577/.594 lift w/1.65 rockers Ford 9" 3.50 Detroit Locker M/T Sportsman Radials 31x18x15 on Convo Pro 15x15s
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Old 10-03-2021, 07:33 PM
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I run a Digital 6, 10 years w/o issues. I like the start retard and two rev limiters.

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Old 10-09-2021, 04:38 PM
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i have a couple of digital 6al2 boxes on street vehicles, no problems. but i have ready to run distributors in both and could easily rewire to use the internal module if the box failed.

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