'64 Dodge with 440 ci.

[O'l geezer]

Hi guys, I am having an issue with my engine missing around 5k rpm. I removed the petronix distributor and installed an MSD 6AL box with a new msd distributor, and it still misses with a hard launch. Any help would be appreciated. Thanks

 

[Frank Mopar]

Is the tach on the same wire as the msd ign feed? Try moving that first.

 

[O'l geezer]

Thanks Frank. The MSD feed is on the ignition switch. I talked to a mechanic this afternoon and he thinks it is running out of advance timing. Said to give it 2 or 4 degrees advance. The engine is fresh and it is not stock. Full advance is set at 30. sounds like a lot but will try it. I trust him. He is an mechanic from way back. peace Frank, and stay safe.
Bob

 

[O'l geezer]

PS< I love your ride !!

 

[GrabberOrange69]

How are your valve springs? Fresh or old? Correct for the cam? Could be getting valve train instability/float.

Just a thought if your ignition mods don’t fix it.

 

[O'l geezer]

Thanks grabber. everything is new rebuild. cam is a hyd, flat tappet. Using a edelbrock hp fuel pump putting out 6.5 to 7 psi with a quick fuel 850 carb. Should be ok but will keep in mind.

 

[Tintoy35]

Double check the ground wire? If any grounds are loose or getting warm tighten and or replace.

 

[toolmanmike]

Thanks Frank. The MSD feed is on the ignition switch. I talked to a mechanic this afternoon and he thinks it is running out of advance timing. Said to give it 2 or 4 degrees advance. The engine is fresh and it is not stock. Full advance is set at 30. sounds like a lot but will try it. I trust him. He is an mechanic from way back. peace Frank, and stay safe.
Bob

30° total or 30° initial?

 

[65 3 times]

My issue was similar. Drove me crazy. Finally tried a few thousandths more plug gap and it worked wonders. Had already changed wires and plugs. Dave

 

[O'l geezer]

30° total or 30° initial?

That is 30 deg total

 

[O'l geezer]

My issue was similar. Drove me crazy. Finally tried a few thousandths more plug gap and it worked wonders. Had already changed wires and plugs. Dave

 

[O'l geezer]

Tks. Dave for the input. Never heard of that. Will put on to do list.
How much total advance are you set at ?

 

[toolmanmike]

That is 30 deg total

You are 6 or 7° short. Some engines like 35°, some like more.

 

[biomedtechguy]

You are 6 or 7° short. Some engines like 35°, some like more.

THIS!!

 

[O'l geezer]

Thanks Mike for the info. I feel better about going that high. Will be trying soon.

 

[Dan64]

Depends on your parts combo,fuel my 493 wants 32 degrees.

 

[O'l geezer]

Tks Dan. That is the plan to try 2 deg. steps and find the sweet spot

 

[Frank Mopar]

Bump up the timing until the trap mph drops off. I think 30 is too low. Imho

 

[65 3 times]

Tks. Dave for the input. Never heard of that. Will put on to do list.
How much total advance are you set at ?

36* Locked in. Us an MSD retard for easier starting.

 

[O'l geezer]

36* Locked in. Us an MSD retard for easier starting.