To MSD 7al-2 or not to!

MSD Digital Ignition Programming & Troubleshooting, Playing with Dots, Slew and other fun toys for traction challanged racers

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sverbus
Posts: 418
Joined: Tue Dec 27, 2005 10:03 am

To MSD 7al-2 or not to!

#1 Post by sverbus » Mon Mar 29, 2010 11:19 am

I currently have a MSD 6al and a "start/retard control, high rpm retard" box and the coil that is made for the 6al system.

I have a chance to buy a 7al-2 from a friend, and it's in great shape and well taken care of. Would I benefit from his 7al-2? and if so do I need to change coils and is that start retard box obsolete then?
'70 Nova
434 small block
Best so far of 10.51 @ 131mph with a best so far 60' /1.46

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aitch o
Posts: 125
Joined: Tue Jul 25, 2006 9:48 pm
Location: Wichita, KS    "It's OK - They're only tires..."

Re: To MSD 7al-2 or not to!

#2 Post by aitch o » Mon Mar 29, 2010 1:15 pm

7al-2 is a very good box.
you do need to change coils. i recommend the 8251.
your start retard will still work.

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supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: To MSD 7al-2 or not to!

#3 Post by supernova » Mon Mar 29, 2010 4:17 pm

I've used a al-2 and a al-3 both boxes are great boxes. I have to say i like the al-3 better.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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mytmouz
Posts: 643
Joined: Thu Sep 21, 2006 1:00 am
Location: Pelahatchie,MS

Re: To MSD 7al-2 or not to!

#4 Post by mytmouz » Mon Mar 29, 2010 11:04 pm

I ran the blaster 2 with my 7al2 for years, finally got a bigger coil for it...
Trucks are for haulin...

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Chevyfireball
Posts: 51
Joined: Tue Oct 31, 2006 5:05 pm
Location: Napier, New Zealand

Re: To MSD 7al-2 or not to!

#5 Post by Chevyfireball » Wed Mar 31, 2010 7:13 am

I got me a digital 7. Plug in the laptop and set all the retards, rev limits, gear changes, timing curve, blah blah. Its excellent.
'It Ain't Over Til It's NOVA'

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supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: To MSD 7al-2 or not to!

#6 Post by supernova » Wed Mar 31, 2010 11:31 am

I now have a 7531 box. It's the best.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

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