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six pack carb question #1916197
09/20/15 05:31 PM
09/20/15 05:31 PM
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Utah, USA
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tweeter1 Offline OP
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Getting ready to purchase a Holley six pack carb setup for a big block.
I have heard that some have used the 340 six pack carbs, and some using the 440 center carb and 340 outboard carbs.

I would love to get some feedback, and who is the leading authority here on 6 pac induction.

Thanks for your help

Re: six pack carb question [Re: tweeter1] #1916204
09/20/15 05:50 PM
09/20/15 05:50 PM
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las vegas
70AARcuda Offline
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Get the list number off the carbs....


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: six pack carb question [Re: tweeter1] #1916216
09/20/15 06:10 PM
09/20/15 06:10 PM
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Utah, USA
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tweeter1 Offline OP
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440 center carb 0-4144-1
outboards 0-4365-1

340 center carb 0-4792
outboards 0-4790

I looked up the numbers Summit

Hope this helps and thanks

Re: six pack carb question [Re: tweeter1] #1916270
09/20/15 07:51 PM
09/20/15 07:51 PM
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bethlehem pa
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mikemee1331 Offline
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Originally Posted By tweeter1
who is the leading authority here on 6 pac induction.

Thanks for your help


Silly Rabbit, we ALL are of course! biggrin

Re: six pack carb question [Re: tweeter1] #1916572
09/21/15 09:49 AM
09/21/15 09:49 AM
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Philadelphia PA
Pynzo Offline
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Philadelphia PA
I put Holley 340 center and outboards on my 383. Mopar Performance reccomended 440 center and 383 outboards for B Blocks, and the only difference I could see between the 440 and 340 centers was the main jets.
I pulled the 61 jets out and installed 63's as reccomended by the six pack tuning tips. Stock '70 383 Magnum, Stock manifolds and 2-1/2" exhaust. Motor runs nicely now. Holleys are about $100 less each than the Mopar Performance carbs, and the 340 center less than the 440. Jets are $6 a pair.

http://www.mopar1.us/6barreltips.html

Re: six pack carb question [Re: tweeter1] #1916736
09/21/15 02:50 PM
09/21/15 02:50 PM
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Bend,OR USA
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Cab_Burge Offline
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Buy the BB carbs, do not mixed them with the SB smaller center carb, you will always be sorry if you do tsk twocents remeber that BB love air and fuel, more air and fuel, more power up the right foot determines how far the carbs. open up to wide open throttle work shruggy grin I love six paks up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: six pack carb question [Re: tweeter1] #1916780
09/21/15 03:33 PM
09/21/15 03:33 PM
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mopar346 Offline
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I thought the center carbs were the same CFMs, at least the factory carbs, am I wrong?


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Re: six pack carb question [Re: mopar346] #1916833
09/21/15 04:58 PM
09/21/15 04:58 PM
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Philadelphia PA
Pynzo Offline
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image.jpg
Last edited by Pynzo; 09/21/15 05:16 PM.
Re: six pack carb question [Re: mopar346] #1917095
09/21/15 11:23 PM
09/21/15 11:23 PM
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Cab_Burge Offline
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I'm sure that the stock 1970 340 carbs, automatic and stick shift, CA and non CA carbs. flowed 300 CFM from Holley on Mopar production 340 C.I.motors, not 350 CFM like the original 1969,1970 and 1971 model productions OEM 440 carbs did shruggy I know several NHRA stocker racers that had a bunch of different original OEM 340 and 440 carbs, none of them ever said that all the center carbs. they had flowed (a bunch of them) for both motors flowed the same for the BB and SB motors work In fact, I've seen stocker racers switch the center carbs. after qualifying at NHRA major races, before being tech. or sealed up for tech. work shruggy Lots of misinformation out there shruggy

Last edited by Cab_Burge; 09/21/15 11:24 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: six pack carb question [Re: tweeter1] #1917103
09/21/15 11:29 PM
09/21/15 11:29 PM
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mopar346 Offline
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Cant tell you about actual flow numbers but pretty sure they were advertised as the same. I am reasonably sure the 440 pulled more from the secondaries than the 340 pulls.


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Re: six pack carb question [Re: tweeter1] #1917211
09/22/15 03:03 AM
09/22/15 03:03 AM
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WA
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tman Offline
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Re: six pack carb question [Re: tman] #1917313
09/22/15 11:51 AM
09/22/15 11:51 AM
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Blair County,PA
62maxwgn Offline
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Originally Posted By tman


And some incorrect information .







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