Msd
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,443
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Because the tack drive requires an external box like a 6AL...... which is not a quality multi spark or an exact rpm multi cylinder rev limiter. I would not even put one on a motor I cared about.
You can still find these. the built in start retard is a nice feature even with mini starters like mine.
The crane HI 6 has nice rev limiter dials and the coil is one of the best.
PS92N E-Core Coil 730-0192
http://www.cranecams.com/uploads/cat...catalog(1).pdf
You can still find these. the built in start retard is a nice feature even with mini starters like mine.
The crane HI 6 has nice rev limiter dials and the coil is one of the best.
PS92N E-Core Coil 730-0192
http://www.cranecams.com/uploads/cat...catalog(1).pdf
Le Mans Master
Joined: Jan 2001
Posts: 6,656
Likes: 1,357
well, not corroded quite that bad.....but similar
.............but it was really way too corroded for the conditions it lives in and the care i take. Really annoyed me. I cleaned it all off and lubed it. What garbage. As I menioned earlier my old mallory unilite (which failed after about 10 years of ownership) never rusted at all.... the good thing I can say about the MSD is that it never failed to fire.
THAT REMINDS ME THOUGH---- I really oughta look under that distributor cap again.
THAT REMINDS ME THOUGH---- I really oughta look under that distributor cap again.
Race Director
Joined: Dec 2004
Posts: 10,332
Likes: 63
From: PARADISE
St. Jude Donor '09-'11-'12-'13-'14
Another worthwhile addition when using aftermarket heads, manifolds and distributors is the use of a slip collar on the distributor so that you can adjust the mesh between the distributor/cam gear. A good many manifolds measure different than stock and cause the distributor to sit too high in the cam gear. It's a simple matter to turn off the existing fixed collar on the distributor shaft and install an adjustable one. Anyone with a decent sized lathe can do the job. You can check the mesh when building the engine using gear paste. I like the yellow color myself.
Le Mans Master
Joined: Nov 2003
Posts: 5,770
Likes: 693
From: Maryland
St. Jude Donor '05, '09, '15
Another worthwhile addition when using aftermarket heads, manifolds and distributors is the use of a slip collar on the distributor so that you can adjust the mesh between the distributor/cam gear. A good many manifolds measure different than stock and cause the distributor to sit too high in the cam gear. It's a simple matter to turn off the existing fixed collar on the distributor shaft and install an adjustable one. Anyone with a decent sized lathe can do the job. You can check the mesh when building the engine using gear paste. I like the yellow color myself.
https://www.summitracing.com/parts/mrg-6059
Tom
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
And their Red coils are crap. A friend ate 3 in a year. Switched to NAPA stock coil. No issues.
Racer
Joined: Nov 2011
Posts: 285
Likes: 36
From: Cedar Park TX
Thanks guys, its always nice to get feed back on a good product before I reach for my wallet.
I've run MSD on cars and boats in the past and they always served me well.
Yes, I do plan to run with the 6AL box as they recommend.
Are you guys running the vacuum or machanical advance?
Greg
I've run MSD on cars and boats in the past and they always served me well.
Yes, I do plan to run with the 6AL box as they recommend.
Are you guys running the vacuum or machanical advance?
Greg
Racer
Joined: Apr 2016
Posts: 493
Likes: 65
I've had this distributor on my 454 for 7 or 8 years with no issues at all. I run the 6AL box with a MSD coil. I just finished a complete rebuild, and it performs a lot better than I had thought it would.
I guess some have good experiences and some don't. Take your pick, I guess. I have run Mallory in the past along with Accel and many of the other ignition equipment, and almost all of it has been good. I even ran a Mallory ignition on a VW bug that ran like a stripped tail snake....
I guess some have good experiences and some don't. Take your pick, I guess. I have run Mallory in the past along with Accel and many of the other ignition equipment, and almost all of it has been good. I even ran a Mallory ignition on a VW bug that ran like a stripped tail snake....
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Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,172
Likes: 7,958
From: Napa Valley California
Hello,
No plans on a Ready to Run 8572. The best option for you would be the 6AL, part number 6425. Thanks, Bret
Your question was:
I have a 1973 Corvette with a 454 and auto trans.
I am getting ready to purchase an MSD distributor p.n. 8572. I was wondering if you will be coming out with a tach drive, ready to run distributor for the Corvette in the near future?
If not what is the best ignition module?
Most people seem to run the 6AL box.
Thanks, Greg
Last edited by OldCarBum; Jan 27, 2017 at 12:40 PM.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
I emailed MSD and this was their reply.
Hello,
No plans on a Ready to Run 8572. The best option for you would be the 6AL, part number 6425. Thanks, Bret
Your question was:
I have a 1973 Corvette with a 454 and auto trans.
I am getting ready to purchase an MSD distributor p.n. 8572. I was wondering if you will be coming out with a tach drive, ready to run distributor for the Corvette in the near future?
If not what is the best ignition module?
Most people seem to run the 6AL box.
Thanks, Greg
Hello,
No plans on a Ready to Run 8572. The best option for you would be the 6AL, part number 6425. Thanks, Bret
Your question was:
I have a 1973 Corvette with a 454 and auto trans.
I am getting ready to purchase an MSD distributor p.n. 8572. I was wondering if you will be coming out with a tach drive, ready to run distributor for the Corvette in the near future?
If not what is the best ignition module?
Most people seem to run the 6AL box.
Thanks, Greg
Team Owner
Joined: Jun 2001
Posts: 23,353
Likes: 1,054
From: Virginia USA
MSD tach drive with a 6AL and MSD coil and 8.5mm wires. Runs great and has been since 2000 when I installed it with my ZZ4. BTW the 6AL IS an multi-spark box with rev limiter chips (resistors) for different RPM's
If you get one just be sure it has the adapter that goes in the distributor side of the tach cable. I've read here over the years that some kits have it missing for some reason.
If you get one just be sure it has the adapter that goes in the distributor side of the tach cable. I've read here over the years that some kits have it missing for some reason.
Thread Starter
Race Director
Joined: Mar 2016
Posts: 14,172
Likes: 7,958
From: Napa Valley California
I've run MSD in boats and street cars over the years and you all confirmed what I was hoping; that their quality and reliability is what it was several years ago. I'll be ordering mine in a few days. It can sit on the shelf for now among-st all the collection of new parts I'm stocking.
Thanks again, Greg
Thanks again, Greg
Melting Slicks
Joined: Feb 2006
Posts: 3,105
Likes: 96
From: Sunrise FL
Good point to make sure the shaft length is right for gear engagement. I do not have access to lathe so I used distributor shims. There are several manufacturers. For example.
https://www.summitracing.com/parts/mrg-6059
Tom
https://www.summitracing.com/parts/mrg-6059
Tom
Le Mans Master
Joined: Nov 2003
Posts: 5,770
Likes: 693
From: Maryland
St. Jude Donor '05, '09, '15
Good thought. 
The post I responded to was referring to the distributor being too high. And for me the problem was just that. It would not drop all the way down to the seating surface of the intake. So I used the shims to raise it up. I have a zero decked block and machined intake to match. But I guess if the distributor does drop all the way in and seats on the intake it maybe too high on the cam gear. I don't know.
Tom
The post I responded to was referring to the distributor being too high. And for me the problem was just that. It would not drop all the way down to the seating surface of the intake. So I used the shims to raise it up. I have a zero decked block and machined intake to match. But I guess if the distributor does drop all the way in and seats on the intake it maybe too high on the cam gear. I don't know.Tom
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
I also run the Pro-Billet Tach drive 8572 dizzy and 6AL box. No issues in 7 years/19k miles, other then a SLIGHT corrosion issue about 2 years ago. Mine wasnt nearly as bad as the one in the previously posted pics but...It did have some white corrosion on the rotor/cap terminals and a little on the pick up coil area. It all cleaned up easily and I replaced the cap/rotor.
I've never had an issue with my MSD stuff at this point. My 8572 had the iron gear that I can use with my billet steel cam.
I've never had an issue with my MSD stuff at this point. My 8572 had the iron gear that I can use with my billet steel cam.