what dual carb setup on a bb 440
#84434
07/05/08 03:19 PM
07/05/08 03:19 PM
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I need help i have been searching the boards and the net but can't find what i need. I have a 1969 Plymouth Satellite. It has been sitting at my friends house for almost a year due to my health it has a bb rb 440, Mopar purple 509 292 int./292 exh. with 108 degree lobe sep. cam, carter high flo fuel pump, with 8 an 1/2 in fuel line to the holly reg, Mallory hyfire 6a box,323 rear sure grip, 2500 stall, and a nitrous setup, my question is i got a dual carb intake and old offylow rise 360 style that is in great shape it had 2 650 hollys on it that are junk. but before i put it on i need to know if there is certin carbs that are made for a dual carb intake , or do you just buy 2 of the same carbs? also what cfm would be good for this setup with gas prices of the 110 oct. tht i run in it it will be mostly ran at woodburn's 1/4 mile and drivin to shows. it now has a 750 dp on it but all its seals are bad and just pours gas everywhere. would 2 650's be to much for this car note i dont care about the gas millage. you would have to be nuts to car with a car like this. or would it be better to run 2 450's or???????? and what brand of carb would be best i see a lot of dual setups now come with edelbrocks are they good for street and strip? I love this car i have had it since i was 15 im now 29 and it deserves every ounce of money i can put into it which is not much with 3 kids but i try. i have always wanted a dual carb for it or a blower and i got the intake and cars for 100 bucks so it won. any help is very much appreated as so i can get my baby back on the road ..... also would a 3000 stall tq converter be a better choice? i just remember my buddy had a 74 challenger with the same setup but single carb. with a 3000 stall and couldn't keep it at a light with out it wanting to jump out and go his last pass on it was 12.3 in a 1/4 with all the same internals as mine. im also trying to decide what shot of nitrous to run..... I have an update i dont know it it helps but my friend and i were talking and i relized i did put a 3000 stall in it a few years back.... and right now it has a eld. tourquer 2 intake on it with a 750 holly so it runs great with that but its not the look of the dual carbs under the scoop that i bought .....
Last edited by myfyn69; 07/07/08 02:44 PM.
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Re: what dual carb setup on a bb 440
[Re: Lil Demon]
#84439
07/05/08 09:13 PM
07/05/08 09:13 PM
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i dont think i need to it just runs better with it. if i do anything else it's 92 oct. from the local 76 station.
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Re: what dual carb setup on a bb 440
[Re: 65Coronet7165]
#84441
07/06/08 09:25 AM
07/06/08 09:25 AM
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Joined: Jan 2003
Posts: 5,904 Athens, Greece
Pyper70
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Actually I think the 474 Purple shaft was used in the 440 HP motors with a 10.2:1 compression (6-pak)
I do kind of agree with the previous post about the cam/converter/gearing not matched up correctly with the DQ.
My setup, as I am still building it, is a CH-28 Dual Quad with Dual 500 Eddy's. A .541 roller CompCams, 3000 B&M converter, 11:1 CR, and 3.55s with optional 3.91s if I wanna get cooky....Given this setup is in a 509 stroker, but I think you will definitely need more gear....
Since its a heavy car, maybe a CrossRam would better suit you with some AFBs?
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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Re: are you asking? or know and listening?
[Re: mark7171]
#84443
07/06/08 12:31 PM
07/06/08 12:31 PM
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wow by the sounds of it i should just stick with a single carb at this point.o and the health was poor but im back on my feet which is why im getting back into the car now.
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Re: are you asking? or know and listening?
#84444
07/06/08 02:11 PM
07/06/08 02:11 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
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Quote:
wow by the sounds of it i should just stick with a single carb at this point.
Sounds like a good idea to me. IMO you'd be better off with an edelbrock performer rpm intake and a 750dp holley carb. Perform better and much easier to tune than that low rise dual quad intake.
Either way, I don't think you'll be too impressed with that cam + 2500 converter + 3.23's, but that's just IMO.
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Re: are you asking? or know and listening?
[Re: DaytonaTurbo]
#84445
07/06/08 05:35 PM
07/06/08 05:35 PM
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Joined: Jul 2003
Posts: 4,774 Holland MI Ottawa
2boltmain
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I have run the edelbrock C-28 unit on 2 440s. It is great. I have spoke to 2 gentlemen who run the Offenhauser 2x4 intake (non T Ram) and they were happy with the performance. The Offy is an old design. Buy one new? I wouldnt- Id buy the Eddy new BUT if you already have the offy or can get it cheap by all means do it. That intake was made for AFB carb so a set of Eddy 500 or 600 cfm carbs should be considered mandatory. I ran the old 509 cam but had a 3000 stall and 4:11s. Once again, some gearhead friends have run the 509 purpleshaft (old skool cam) with the factory hi po converter and 3:23s and they said it worked fine. Dont flame me its what they claim. I have a new offy 2x4 that I will run on my 360. I know an RPM and Holley will make more power but I love the old school "Dual Quad" look.
Keep old mopars alive.
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Re: what dual carb setup on a bb 440
#84447
07/07/08 01:53 AM
07/07/08 01:53 AM
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Joined: Mar 2008
Posts: 58 Langford SD
dodgedart270
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I used the tunnel ram package sold in the summit magazine. It has two 450 holleys with manual secondaries on each carb. I have the same cam as you with ten to one compresion. I use 3:55 and 4:56 gears depending on if I am racing or not. Either way the set up worked real well with great street manners and good power. I often wonder if I should have chosen the bigger carbs instead. I made my own fuel line for it and the linkage you get is not so great but is functional.
VARIOUS YEAR A BODY PARTS FOR SALE MAINLY DARTS
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Re: what dual carb setup on a bb 440
#84448
07/07/08 03:27 AM
07/07/08 03:27 AM
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Joined: Aug 2004
Posts: 214 Hamburg / Germany
Den300
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I drive the CH-28 form EDL with two 600cfm from EDL set on a pair of ported RPM heads with a 8AN fuel line. 3.91 gears and 2800 stall. .530 solid custom form Scott Brown. The 275/60 tires stil spin at 45mph if I put the pedal to the metal for only 80%. And my car weights tons! (69 Chrysler 300). I love this set up, but if you wanna have fun with a 2x4 you better save some money for gas. The price here in Germany is now over 9$ per gallon. keep the converter, the carbs will by fine. just dial them in correct. but you could use a cam that is more torque orientated.
Hamburg/Germany
69 Chrysler 300 446cui Dual Quad 12.64 @ 110.7
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