Re: Tuning issues

[tom hecht <baddd65@xxxxxxxxx>]

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my brother has run a 509 cam in his stock 383 for years without a problem.
 
lets look at the carb
if the air mixture screws are not killing the motor, then check your 
butterflies, they should have the same gap, front to rear.
there is a little screw on the secondaries to control them, 
if you take the carb off, you will see a tiny air slot in each barrel, you should
have the same gap, i believe it is supposed to be .025 (not sure)
it is more important that you adjust both front and rear equally.
 
if you have the butterflies adjusted correctly, the mixture screws will
kill the motor.
if the response is still bad, you may want to check your acc pump,
if it is healthy, adjusted right, then you can add different cams to make it
come on faster.
 
tom 
65 satellite (i love holleys)


ledman_70@xxxxxxxxxxx wrote:

I need some suggestions on tuning here guys. I have a 65 413 with 509 
Huges cam, stock cast intake with 780 Holley mounted on a 2 inch adapter 
to make it fit the intake, and headers. The engine runs ok, but it's not 
as crisp as it should be, especially at idle. It idles fine at 1000 rpm, 
and will even idle lower than that, but it doesn't feel as smooth as it 
should. I have electronic ignition with the chrome box, but still 
running the stock points coil. It seems like this is a fuel issue, but 
the carb is clean inside and the float levels are adjusted right, I 
believe. If you turn the misture screws in, the engine continues to run 
for a little while before dying. The engine is a little tired and the 
compression readings are a little weak and erractic. I'm thinking it's 
running as good as it can with the compression being 100lbs on 4 
cylinders, and around 125 on the other 4. I know it's time for a 
rebuild, but I'm trying to limp this motor thru till I can get my 426 
wedge built. I would welcome any suggestions. Thanks

Jeff Adams
64 Polara

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Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

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