470" Stroker - carb suggestions?

[scott1973]

I am looking for some guidance on selecting a carb.  The motor is a 470" stroked 400..  10.5:1 compression, Comp cams...545 lift with duration at I 241 and E 247, Edelbrock RPM heads and intake, tti 1 7/8 headers, 9 1/2 dynamic converter, and new FBO ignition.  Does anyone have any suggestion on carbs?  This is going in a 73 Charger - heavy with an automatic and 3.23's for now.  Time and money will get me the 3.91's and gear vendor.  Can I go with a Doulbe Pumper or need to stick with a vacuum secondary?  I've been told with this set up and the converter I should consider a double pumper.  I've been looking at 850's from Holley and Quick Fuel.  Any thoughts?

Thanks for the help,
Scott

[cdr]

having read the reviews on this, i am leaning to this for my 512, very simple jet & metering rod changes 

http://www.summitracing.com/parts/dem-1904

[scott1973]

Thanks for the feedback cdr.  I  hadn't thought about the Demon.  The guy that posted the last review on your link seems to like it and he's running a 440.   Maybe I should look at the Demon's as well.  I'm thinking a 750 will be too small with my set up.  I have 2 750's and 670 that I used when it was a mild 400. 

Thanks,
Scott

[cdr]

if you are racing & want every little bit of hp, you will need more cfm, i have more cyl head & cam & cubes, i have a 3310 750 holley on mine right now & it runs really good, street car ? race car ? be careful the hp carbs & others cfm is rated at a different pressure  

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=13&cad=rja&uact=8&ved=0CIsBEBYwDA&url=http%3A%2F%2Fwww.thecarburetorshop.net%2Fbigger2.html&ei=EGluVYjKBsnVsAW30oKQAw&usg=AFQjCNGlbnNIKF1Aa9mUlbRirIKbuFZxPQ&bvm=bv.94911696,d.b2w

[c00nhunterjoe]

Problem is, those 3.23s will like a vacuum secondary carb, but the 3.91s will respond well to the mechanicals. I say put the 750 you have on it for now and buy a new carb after you have finsihed upgrading. The difference in hp between the 750 and an 850 dp will be minimal and possibly not even felt.

[BSB67]

A small venture 950 HP type carb.  

If you are on a budget, a used Holley 4781 will work well and won't give up much to the 950.

[BSB67]

Problem is, those 3.23s will like a vacuum secondary carb, but the 3.91s will respond well to the mechanicals. I say put the 750 you have on it for now and buy a new carb after you have finsihed upgrading. The difference in hp between the 750 and an 850 dp will be minimal and possibly not even felt.

That motor won't bat an eye at a DP carb.

[cdr]

i just saw you are running a dual plane intake, so yes you do need a real 850. like BSB67 suggested. i have the indy s/p max wedge port intake.

[scott1973]

Thanks for the feedback...I'm still kicking it around.  I like the idea of putting the old 750 back on to save some money, but I also like the idea of getting the 850 now and finishing the set up with the gears, etc. later. 

Thanks,
Scott