Re: Holley Carb

[MO <micher@xxxxxxxxxxxxxxx>]

test.............MO

On Thursday, May 23, 2013 3:26:25 PM UTC-5, MO wrote:

Joey, a bit against  popular opinion, my research shows you are right, with the way my engine is set up.  Yes the 750 works well , but if you plug my specs into the CFM math formula, A 650 cfm will work very well and like you said, have better throttle responce. If I were going new, It would be 750 CFM for future up-grades.  I think that since the 650 cfm carb is such a good buy, that is what I will give a try 

   Thanks all, your opinions are valued.........................MO

On Thursday, May 23, 2013 1:39:31 AM UTC-5, Joey Lemire wrote:

smaller carb should give quick throttle response with that combo

Joey

On Thu, May 23, 2013 at 1:45 AM, MO <mic...@xxxxxxxxxxxxxxx> wrote:

Anyone running a 650 CFM carb. on a fairly mild 440 engine?

   I have a great  chance to buy a Holley 650 CFM with dual accelerator pumps and mechanical secondaries with replaceable jets in the secondarys  It is the 4250 series carb. There is a lot you can do to tune this carb.  My  limit will be about 5-5500 RPM . Non ported heads, about .475 lift cam, dual plane high riser intake. 

   Any significant difference between a 650 and 750 CFM on this engine?...........................MO

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