kreed

iTrader: (2)

Is it possible to use a MSD 6M box with a Thunderbolt distributor? If so , Is there a pigtail wire connector for it?

mike tkach

iTrader: (3)

yes,tbolt 4 forsure,i never tiyed with tbolt 5.go to the msd website,it will show you how to wire it.

kreed

iTrader: (2)

thanks Mike!!!

HaxbySpeed

You do still need to run the tb4 module though..

xsboost525

kreed, i just did this a few weeks ago. the only prob is that u never really eliminate the factory ignition. the marine msd (6AM) wires through the factory module. i pulled it all out and ran a pro billet distributor and msd blaster coil. it made a world of difference at idle and bottom end. i also ran a 6A box that isnt compatible with the factory dist. i wanted to take out all the stock stuuf because of the problems i was having.

kreed

iTrader: (2)

Well thanks for all your input. Im going to do the same thing. I mean, this ignition ran great on dyno...until just above 5000 RPM, maybe 5200. I plan on runnin engines up to 5400, so this ignition will not work for me. MSD it is! Know where theres one for sale???

FIXX

iTrader: (2)

you can use it with out the merc module..you have to rephase the rotor and run it as a locked out distributor with the msd,you use the distributor as a magnetic pickup..

HaxbySpeed

I've tried that before without any luck and I thought it was because the merc pick up is hall effect and not mag? It worked on an older 7 box on the dyno but wouln't trigger the 6m in the boat. Can you give a quick wiring diagram? thanks! Also for what it's worth the factory GM small cap distributors last a lot longer in a boat then the MSD. The MSD distributor's go green and the pick ups rust very quickly. On smaller blower motors I usually use the Voyager marine ignition kit ($350) it comes with new dist, coil with mount, and plug wires. It has about 8 degrees of advance in the module wich is great for blower stuff and has no problem sparking 800hp. It's also easy to run with MSD with a factory pigtail..

FIXX

iTrader: (2)

you are correct, you can use the merc tv distributor on the newer style 6 box, part # 6530 and can program the timing curve with a laptop.. when i said use the distributor as a magnetic pick up i ment in a way to trigger the box..yes its a hall effect..

if you take the white /red stripe wire and feed 12 v into it and connect the white/grn stripe i can get the distributor to trigger a signal to a dvom,,i haven't tried it yet on a 6 /7 al box yet,,i believe you could hook it up to the white point wire and it may trigger the box