Mechanical tach drive distributer
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,312
Likes: 156
From: Richmond Texas
Mechanical tach drive distributer
I have an MSD 8572 distributer. I am wanting to switch to an electric tach. Should I sell this distributer and buy a new one or just use this one without the tach cable? I figure I could get at least $300 for this one then buy a new one. These MSD 8572's go for @$500 new.
Le Mans Master
Joined: Jan 2001
Posts: 6,742
Likes: 1,384
I just used the 8572 when I went with an electric tach. I even locked it out with an MSD kit and I am using it locked-out with timing controlled by the EZ-EFI 2.0.
When I went back to using it with the MSD box I ended up removing the tach filter because it would start bouncing above 3500 rpm. Didn't hurt it, but since I removed the tach filter, the tach has been working just fine.
I initially went to an electric tach because I was running my EFI with a GM 730 ECM, with GM distributor, and at that point I was NOT using the MSD box. (I had used it before on my carbed engine).
I only share that because I am not sure what it is you are doing.
When I went back to using it with the MSD box I ended up removing the tach filter because it would start bouncing above 3500 rpm. Didn't hurt it, but since I removed the tach filter, the tach has been working just fine.
I initially went to an electric tach because I was running my EFI with a GM 730 ECM, with GM distributor, and at that point I was NOT using the MSD box. (I had used it before on my carbed engine).
I only share that because I am not sure what it is you are doing.
I have an MSD 8572 distributer. I am wanting to switch to an electric tach. Should I sell this distributer and buy a new one or just use this one without the tach cable? I figure I could get at least $300 for this one then buy a new one. These MSD 8572's go for @$500 new.
Last edited by carriljc; Jul 2, 2021 at 12:27 PM.
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,312
Likes: 156
From: Richmond Texas
Hey thanks. I don't know either. HeHe. I'm a novice mechanic. I currently have this distributer, an MSD 8203 Blaster coil and MSD 6AL box. I bought a FiTech TB FI and will soon be installing it as well as I am wanting to get a Dakota Digital gauge set. I'm going to get the set for the 47 Chevy truck so I can have all my gauges in the 2 large pods in front of me and use the center for radio. I have a mechanic who will help with this. But I would always welcome the experience of other Corvette owners.
Le Mans Master
Joined: Jan 2001
Posts: 6,742
Likes: 1,384
I'm going to guess that the FI tech efi requires a locked out distributor to allow it to control timing? If so, then you can get the lockout kit relatively cheap. When I locked mine out I removed the vacuum contraption also.
Take a look at your distributor. I actually wrote to MSD to ask them if my distributor gear was ok to use with the roller cam in the GM RamJet 350 engine....so eyeball that. Mine was ok to use per MSD and it is quite old.
Take a look at your distributor. I actually wrote to MSD to ask them if my distributor gear was ok to use with the roller cam in the GM RamJet 350 engine....so eyeball that. Mine was ok to use per MSD and it is quite old.
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,312
Likes: 156
From: Richmond Texas
I'm going to guess that the FI tech efi requires a locked out distributor to allow it to control timing? If so, then you can get the lockout kit relatively cheap. When I locked mine out I removed the vacuum contraption also.
Take a look at your distributor. I actually wrote to MSD to ask them if my distributor gear was ok to use with the roller cam in the GM RamJet 350 engine....so eyeball that. Mine was ok to use per MSD and it is quite old.
Take a look at your distributor. I actually wrote to MSD to ask them if my distributor gear was ok to use with the roller cam in the GM RamJet 350 engine....so eyeball that. Mine was ok to use per MSD and it is quite old.
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If you are never going back, ever, then sell it and get another MSD and the lockout kit. I had mine Locked out with the kit, but was still running the mechanical tach in the dash when I was running my Sniper EFI. I have an electric tach I am going to put in this winter but Im not made of cash, so Im just going to take one of the many old tach housings I have, since the chinese cant make a decent cable, and use the end as a cap to keep crap out of it. I wouldnt buy a summit brand distributor since you dont know the manufacturer and if it brakes, you wont be able to get parts, other than sending it back to summit for a replacement. I had a lot of issues with some of their gauges and they finally stopped selling them, so I ponied up the cash for a good brand name and never had another problem.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
This one is close by.......not sure about the listing, may want to check into it......it is a Ready to Run.....there are some used ones too......
MSD 8360 Chevy V8 with Internal Module Distributor | eBay
Holley sells refurbished units all of the time.....on Ebay....I got mine for $209 dollars a couple of years ago.
The non-Ready to Run units are pt#8361.....there are a couple of deals there too......
msd 8361 | eBay
Why is it being mentioned to lock it out....? Do you have EFI? All MSD distributors can be locked at a later date by removing the gear and flipping the advancer 180 degrees.
I have the 8361 in my own engine......one thing about the Ready to Run though.....if your MSD box quits.....you can rewire it on the spot to the internal module, and it will get you down the road.....
Jebby
MSD 8360 Chevy V8 with Internal Module Distributor | eBay
Holley sells refurbished units all of the time.....on Ebay....I got mine for $209 dollars a couple of years ago.
The non-Ready to Run units are pt#8361.....there are a couple of deals there too......
msd 8361 | eBay
Why is it being mentioned to lock it out....? Do you have EFI? All MSD distributors can be locked at a later date by removing the gear and flipping the advancer 180 degrees.
I have the 8361 in my own engine......one thing about the Ready to Run though.....if your MSD box quits.....you can rewire it on the spot to the internal module, and it will get you down the road.....
Jebby
Last edited by Jebbysan; Jul 3, 2021 at 10:19 AM.
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,312
Likes: 156
From: Richmond Texas
This one is close by.......not sure about the listing, may want to check into it......it is a Ready to Run.....there are some used ones too......
MSD 8360 Chevy V8 with Internal Module Distributor | eBay
Holley sells refurbished units all of the time.....on Ebay....I got mine for $209 dollars a couple of years ago.
The non-Ready to Run units are pt#8361.....there are a couple of deals there too......
msd 8361 | eBay
Why is it being mentioned to lock it out....? Do you have EFI? All MSD distributors can be locked at a later date by removing the gear and flipping the advancer 180 degrees.
I have the 8361 in my own engine......one thing about the Ready to Run though.....if your MSD box quits.....you can rewire it on the spot to the internal module, and it will get you down the road.....
Jebby
MSD 8360 Chevy V8 with Internal Module Distributor | eBay
Holley sells refurbished units all of the time.....on Ebay....I got mine for $209 dollars a couple of years ago.
The non-Ready to Run units are pt#8361.....there are a couple of deals there too......
msd 8361 | eBay
Why is it being mentioned to lock it out....? Do you have EFI? All MSD distributors can be locked at a later date by removing the gear and flipping the advancer 180 degrees.
I have the 8361 in my own engine......one thing about the Ready to Run though.....if your MSD box quits.....you can rewire it on the spot to the internal module, and it will get you down the road.....
Jebby
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Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,312
Likes: 156
From: Richmond Texas
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas