Recent content by 1966273Valiant

I also forgot to mention that I have cast iron heads. Below is somthing I found during a search of the web for an answer about lash: You can take the "hot" setting given to you in the catalog or cam specification card and alter it by the following amount to get a "cold" lash setting...

I went .016 Intake and .025 Exhaust (cold). I also went 4% richer with different metering rods in the carb (richer for the low power setting). I also installed a new PCV valve with a new seal in the cap. It seems to idle better and run better at low RPM's. I think you guys were spot on with the...

Do you have breathers on both sides of the motor, or do you have a PCV set-up?

I do appreciate the advice on the valve clearence. I did have the lash to small. I'm hoping the PCV will make a difference as well. Thanks again.

I re-adjusted the valves .016 Intake and .024 exhaust. Didn't seem to make any difference. Still waiting on the PCV valve.

Ok, will do. Thanks Rick. I will post the out come.

Rick, I failed to mention that I adjusted the valves while they were cold. I took the stock 273 numbers (.013 and .021) and went .003 less. Do you still think I should loosen them up? Also, I have a PCV valve on the way. Thanks!

Thanks again for all the responses. I'm getting about 16 PSI of vacuum at idle. As far as the valve adjustment is concerned, I have new locking adjusters and have adjusted the valves to .010 for Intake and .018 for exhaust. The motor seems to running good in every regime other than idle. If...

Thanks for the replys. It is an Edelbrock 1403 (500 CFM). I've ajusted the idle mixture screws with it idling around 600-700 RPM. I turned in each fuel/air mixture screw until bottomed and then ran each out until I got best vacuum. I'm not sure about the cam. Motor was just rebuilt prior to...

I have a 1966 Plymouth Valiant with an 318 dressed like a cuda 273. It has the cuda 273 valve covers with the stock breather on the drivers side and the PCV on the passanger side. It has always ran rough while idling. Have have chased this for a while. Installed allot of new ignition items and...

Start simple! I replaced valve seals because I that that was the problem. The PCV issue was the cause.

anyone?

Is the ball/cup set-up ok for solid lifters?

That's good to hear. Do you think I should try the new adjusters?

I had a problem with the same type syntoms. It was because I installed a pair of valve covers that did not have a shield to block oil from the PCV valve.