yes MO,,,,,,,,5000 rpm times .5 times 440 ci. equals 1,100,000 (cubic
inches) divided by 1728 (one cubic foot) equals 636
cfm,,,,,it will handle it for a little over 5K but after that it will come up
short,,,,,,
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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