RE: 850 DP vs dual 4's

[Doug Jacobsma <big_jake57@xxxxxxxxxxx>]

I have run two dual four cars and two six pack cars and loved them.  I had one six pack set up to run mechanical, and it was junk until I got it all set back up to vacuum.  Both dual quad setups were mechanical secondaries, with non progressive linkage.  One was a Hemi with Carters, the other a 440 with small Holleys, 500's as I recall.  The 440 is more to this situation, and basically, it ran with a lesser throttle than a single carb.  Wasn't much different than having a giant 4 bbl on it.  I don't think it was much worse if at all on fuel than the 800 singles I ran.  Outside of the fact that you always have the chance of double the problems (and double the expense) with a dual quad set up, it's not that difficult to run.   Too bad Dulmage isn't handy, he's probably the one that has run single and dual carbs on the same engine setup.

Jake,
'63 Sport Fury 'vert





> To: 1962to1965mopars@xxxxxxxxxx
> From: ledman_70@xxxxxxxxxxx
> Subject: 850 DP vs dual 4's
> Date: Wed, 25 Nov 2009 21:36:19 +0000
> 
> 
> Hey guys, I plan on replacing the sp 750 Holley on the 426 in my 64 
> Polara this winter with a dp 800 Holley I have. I've also been 
> considering going to a dual 4 setup. Which do you guys/gals think is 
> better, performance-wise? The dual 4 set will cost a lot more as I 
> already have the 850. Are dual 4's THAT much more trouble to set up and 
> keep adjusted? Do they perform a noticable amount better, or is it 
> mostly for show? The engine has headers, a 513" Lunati Voodoo cam, small 
> amount of head work with smaller valves, and a 4-spd with 3:91 gears. 
> I'm also installing an A833 od.
> 
> 
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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.