RE: Holley Carb Question

["Dennis C." <dennis.2914@xxxxxxxxx>]

Thanks for the reply.  Per one of the books I have it suggests testing 
the power valve with a hand vacuum pump.  After your suggestion I pulled 
the metering block and checked the valve.  The valve is ok, it is a 65 
(6.5) and my idle vacuum is around 12" so per Holley it appears ok.  

Looks like I need to keep looking.

Dennis C.

spicemanii@xxxxxxx wrote:
> 
> 
> Sounds like you have had either a backfire and it popped the power 
> valve. Or, it is has a cracked diaphram. If you know your idle vacuum, 
> use a one digit higher number than the inches of mercury reading. 
> Example, if it has 10, use a 11. to a 11.5. joe machado
> 
> 
> -----Original Message-----
> From: Dennis C. <dennis.2914@xxxxxxxxx>
> To: 1962to1965mopars@xxxxxxxxxx
> Sent: Fri, 6 Mar 2009 6:32 am
> Subject: Holley Carb Question
> 
> 
> 
> 
> I am trying to get my Holley carb jetted.  I think my first problem is 
> that I have the wrong carburetor.  Several years ago per Holley's 
> recommendation I bought and installed a 670 Avenger on my 383.  I am now 
> 
> working on getting the car on the road and per my spark plugs I am 
> running very lean. It also had very poor performance and at part 
> throttle at highway speed it ran rough.
> 
> So far I have gone from 65 primary jets to 74 primary jets where it 
> looked a little rich and back to 72 primary jets.  I am running the 
> secondary jets just 2 numbers higher than the primary.
> 
> One of the problems I am having is that it appears that the right bank 
> is running richer than the left bank.  
> 
> Is it ever necessary to have different jets from side to side or do they 
> 
> always need to be the same?
> 
> Should I bite the bullet and buy a different carburetor?
> 
> Is there any good books or information on jetting carburetors I should 
> get, this has been interesting but the more I learn the more I am 
> learning I don't know about carburetors and jetting.
> 
> My engine is a 383 with an unknown perfomance cam that may have had some 
> 
> head work done on.  The work was done on the engine before I bought it.
> 
> Thanks
> Dennis C.
> 
> 1996 Dodge Ram 3500 Van Conversion
> 1964 Plymouth Belvedere 318 Auto
> 1963 Plymouth Sport Fury 383 4-speed
> 1949 Dodge Pickup 289/C4 soon to be changed
> 1998 Honda Valkyrie Standard
> 
> 
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> [Non-text portions of this message have been removed]
> 



1996 Dodge Ram 3500 Van Conversion
1964 Plymouth Belvedere 318 Auto
1963 Plymouth Sport Fury 383 4-speed
1949 Dodge Pickup 289/C4 soon to be changed
1998 Honda Valkyrie Standard


----
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!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html.