Greggcellent

Anyone have or know where I can find a used distributor assembly for a 94 502 EFI Gen V Merc ?

I believe the part number is 805222A1. thx for any help.

acaruso

Ihave a MSD replacement 50 hours call me TONY 240-687-5599

ezstriper

have a brand new MSD for this...$150 Rob [email protected]

Greggcellent

I checked with MSD and they tell me I need the model number 8366 for my application ,,,is that what you guys have?

articfriends

iTrader: (1)

Go to your local autoparts store and tell them you have a 94 chevy 1/2 ton 350/5.7 tbi motor and need a replacement distributer, it will be a identical drop-in with same exact plugs and under 100$ new, I have used both and the msd actually corroded and self destructed sooner, Smitty

ezstriper

the modules are different in some of the car/truck units as the timing curve is in that....ran into that before....ck the # on mine when I get back home sunday

articfriends

iTrader: (1)

We are talking a gen v 502 EFI distributer, module just converts the signal so mefi can use it, timing is completely controlled by efi programming. The older thunderbolts had some kind of timing module but efi is different, I had my MSD fail on vacation in N/H, walked into autoparts store and bought a off the shelf 1995 tbi 5.7/350 distributer, works good, Smitty

Dennis Moore

Yep, you have a distributor that is exactly the same as an automotive/truck distributor. Buy one from an auto parts store.

MSD ignition systems are not good for engines that run below 5500 rpm. They have a really short spark duration above 3000 rpm and will hurt engine performance and foul plugs prematurely.
Stay with the stock non-CD ignition.
Dennis Moore

jeffswav

I find it hard to believe that a auto distributor would have Coast Guard approval.
I use the DUI performance distributor.
http://www.performancedistributors.com/marinedui.htm

articfriends

iTrader: (1)

As far as coast guard approval, in the old days of points ignition when distirbuter could actually create a spark inside they had a vent with a spark screen and needed uscg approval, these new ones have a relucter wheel, no possible spark, I can't find anything on my original gm distributer that came in my boat that shows uscg anything on it, maybe they still had to pass a uscg test originally but with the magnetic pickup and nothing to create a spark its a non-issue, Smitty