blowing out the spark? need msd help

[Lebedin8654]

on my current setup the car keeps blowing out the spark at 9 pounds everytime i lay into it! i am running an all stock ignition wit an msd coil, cap, and button. my question is what is a good msd setup that i should go wit? i do some track time but its mostly a street car! and if i go to an msd box can i use my stock dizzy?THANKS

 

[LAFENATU]

What do you have your plugs gapped at?

Yes you can use your stock distibutor. Infact, the stock distributor will go a looong way.


btw..Mallory > MSD

.02

 

[tommybunz]

+1 check gap and close some

 

[94IVGT]

Yes no need to upgrade distributor, but look into a hyfire 6 ingnition. It will solve your problem along with checking that gap.

 

[Lebedin8654]

I have them gaped at 27 to 28 right now...how much further can I go?

 

[GearGambler]

why do you say its blowing out the spark? is it a miss you're feeling?

i would check into fuel volume / pressure. my bet is that its running out of fuel, or running the injectors dry. the plugs gapped between 30-35 should be fine for 9psi.

whats the entire setup?

 

[94kingcbra]

get a better ignition coil with msd or mallory box...Check spark duration and timing for the higher rpms on your tune as well...Good Luck

 

[Lebedin8654]

i am running a S trim wit ported gt40s, a cobra intake, 1.7 roller rockers, and a 2031 crane cam! i know its the spark blowing i had the problem before and it turned out that the pligs where gapped to big and the coil was getting weak...i am gonna get a 6AL msd box this week from a friend and try that, how do you wire up a msd box on these cars?

 

[slopony]

how do you wire up a msd box on these cars?

msd maskes a plug and play harness for 20 or 30 bucks. plug one side into coil, other into car plug for coil, and match up the wire colors from the new harness to the 6al.

 

[tommybunz]

8874 should be the part #

 

[GearGambler]

instructions are also on MSD's site