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Hey guys, I didn't mean to start a war here. Just wanted to go a couple seconds faster. I'm looking for all the flow I can get from the 440-1s. The motor's 572 inches with over 14-1 compression and with my new cam and rocker combo, around .780 lift. I was hoping to go with B1 MCs but just lost a big chunk of my income so now I need all I can get from my old heads without breaking the bank. I run Super Gas @ around 146 mph and brackets at around 8.90 and 150 mph, but wanted to see something like 8.60 - 8.70 at 155 or more and SG @ over 150.

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Dick,no war here.You are maxed out with the 440-1s on a 572" and you would benifit to max them out with the 345cc CNC.The best head combo would be Indy -13 or B-1s or something bigger with a flow of over 400cfm.

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CNC programs make full porting quick and affordable.They are only as good as the programs imput.AS said they are repeatable and accurate.If the imput information is based on the results of hours of hand work as well as accurate adjustments for thin ares or areas of structural integrety.Problems of core shift can be eliminated(scrap casting) if realy bad and a little hand work if not.The program should also be tailored to the build.Don't use a 280 when you need a 345.AS for the machine lines left,they can have a benifit to performance,like creating a reversion effect in a runner or a directional effect in a chamber on natural aspirated engines.On pressurized engines the smooth finished is desired.Most CNC programs can be run in a few hours and hand port can be 60 hours+-.Welcome to the age of techonolgy.

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That is what I have been trying to say.Once you have the head port maximized and it is programmed,is any hand dressing needed??

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isn't it proven by jeff at modern that his cnc program on 906 heads outperformed a hand porter on a FAST build getting a 440-6 RR into the 10 second zone while the hand porter was only able to get the A12 RR to low 11's.
i believe thats proof enough that CNC'ing one of these heads works better then hand porting.
if i were to do it again CNC'ing is my choice,hands down.

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A 10sec pass so far has only happened ONCE , Ed had a killer 60ft and has not been able to duplicate it since .

You should stick to what you know ... BBQ'ing skirt steaks ...

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John,you should stick to chasing ambulance casualties.You speak with SUCH authority like you are running in the 14's.Correct me if I'm wrong but the top F.A.S.T guys are all going to MCH.And NO!You can't have a peice of steak

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AL, i made extra steak for
JOHNAHAH at mopars at the valley but he didnt come by to say hi, dont you remember?
he knows exactly who we are but we dont know who he is!
wish JOHNAHAH introduced himself to us.i wonder why. maybe next year,oh well

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The engine will run good, and you wont need to spin the mill 8K either. 7000-7300 shift points and the engine will live a good while.

LOL
My junk had the single small 4150 cast Indy intake with a 4" toilet.

SG66mopar
That engine will run good. No need to spin the motor to 8K either... 7200-7300 shift points and it will live a long time.

What rocker gear are you going to run?

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