Shuttering?

[Loulang]

1966 Dodge Charger 383/727. I feel a shuttering like vibration only when I get into the gas real good. But it I just drive it easy there is no shuttering. This feeling is new, I did have motor work done and I installed a Hughes torque convertor. Motor is a 383 .30 roller lifters/rockers Edelbrock aluminum heads and Holley sniper system. Lokar gas/TV cables. Could this be my torque converter? My converter warranty is void at the end of the month. I have put almost 800 miles on the new parts. Thanks for any advice I really appreciate it.

 

[Kern Dog]

I would call that "shuddering" but I think we mean the same thing.
I've had that happen and didn't bother to replace just the converter or transmission. I replaced both. I suspected it might be in the transmission itself though. Low pressure in the transmission could cause this.

 

[Loulang]

Think it’s my TV adjustment?

 

[twecomm]

Could be driveshaft U joints..

 

[Loulang]

Could be driveshaft U joints..

I will check that here soon. It’s only when I apply a lot of gas. If I drive her like I’m elderly then it’s fine but if I stomp on the gas I get a light shuttering vibration till I let off the gas some. It did not do this when I first started driving it around.

 

[Loulang]

I did change my plugs and fuel filter. I was told by my tuner to get a 10 micron fuel filter and I did. I also got autolite xp iridium plugs and gapped them at .45 is my gap to much I’m wondering.

 

[Loulang]

Update: Gap the plugs at 35 and like 97% of the shuttering is gone

 

[493 Mike]

Update: Gap the plugs at 35 and like 97% of the shuttering is gone

That sounds like a weak coil or ignition box.
Mike

 

[Loulang]

Nope there both good. It didnt do it before I changed the plugs and fuel filter.