Which Distributor should i go with?
 

What kind of distributor are you using? I understand that MSD is the top dog but are there any other alternatives? I have a Chevy 502 and it has a MSD on it but will not work. We switched it out with a regular chevy distributor and it works just fine. I looked at the manufacture date code on my MSD and it says that it was made in 1994. That seems pretty old to me. Should i send it to them to have it repaired or should i buy new?

I am basically looking for options, so what do you have for me?

Mallory is pretty good. I had both engines in my Roamer switched over to Mallory's when i had it. Rock solid, easy to get parts for and easy to mod.

check out davis unified ignition or DUI, i had them on some street cars and really liked them, never tried their marine stuff though.

http://www.performancedistributors.com/

which msd are you running?the one that uses a box or a ready to run distribtor?

It is the MSD with the Rev limiter box and ignition control box. It also has the coil.

i know the msd box does not last forever,but it is the most common for a reason,i would get a new box,and a new coil,then you will be good to go for a long time.

Use a mercury ignition like thunderbolt or what they use for 500HP's.

Been running the DUI 's for 3 season ... built in adjustable rev limiters and no boxes to fail . I will never run a MSD's again .

The MSD i took out of the motor had a Bronze gear at the bottom. If i went with the DUI would i have to switch it out?

Yes ! They can send you one with a bronze gear . They are easy to work with ... and a quick turnaround . The limiters cost extra ... standard marine unit cost around $318 . All you have to connect is a tach wire and a power lead .
I got tired of having to carry a spare msd box on the boat .

dui
 

chad , call them and talk to them about what you want and they will build you just what you need . 6000 to7000 rpm with rev limiter and also install a bronz gear .

The standard GM HEI system should be fine to about 800 hp. I've never had any trouble with any of my engines set up with this system.