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Re: 500 CI RB SIX PACK HELP [Re: Cab_Burge] #1792802
04/04/15 05:06 AM
04/04/15 05:06 AM
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NJ-USA
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HPMike Offline
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NJ-USA
Quote:

Quote:

. Then shut the car off and hook up the outboards. have somebody get in the car and floor it. Make sure all 3 are wide open.


I've never seen any vacume actuated six pak open when in nuetral at WOT, with the motor running or not OP, sixpaks will barely start to open the outboards when hitting the throttle to wide open, by the time the motor builds up enough manifold CFM flow to actuate the vacume secondary pods the motor will be revved way higher than you want to hear




What I think he means is to verify that the outboards have the capability to open fully with the engine off...I do this as well, although, unless you have a mech setup, you would have to pull the linkage open manually to do this..

-70 is too much jet on the center....
-Make sure float level is set...
-Must trim the idle circuit on the outboards...Biggest mistake people make on these when they cant get them to idle properly..
-use the outboard jet plates-no one is that lucky drilling out the stockers..
-NO WAY are the yellow springs going to work...Prob fall flat on its face and then struggle to regain..Go brown or purple...Ive even modified them for further stiffness..
-As delivered accel pump usually fine on a stroker..Never saw any benefit to the bigger pump...usually worse..
-Play with different pump cams to dial in the fuel delivery progression to the outboards..
-Even though its mostly for the resto guys, Use an idle solenoid to prevent dieseling,especially when running pump gas..


These setups work great on strokers..Bear this in mind folks...The carbs on the FAST 6 pack A12 cars I built(the red stick car and the black auto) are all just jetted, outboard springs and pump cams from being right out of the box..We had one of the brightest carb guys in the country make a set of really tricked out 2300''s...No matter what we did, they werent better than the ones that were on them...Dont over think this...

MB

Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1792803
04/04/15 10:40 AM
04/04/15 10:40 AM
Joined: Jul 2003
Posts: 3,947
Holland MI Ottawa
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2boltmain Offline
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Holland MI Ottawa
"i also hear people talk about pro max but one gentelman I know had problems with the floats hitting their plates?"

Maybe on a plastic float the parting line "Flash" can be sanded down?

8480496-image(27).jpg (115 downloads)

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Re: 500 CI RB SIX PACK HELP [Re: 2boltmain] #1792804
04/04/15 10:41 AM
04/04/15 10:41 AM
Joined: Jul 2003
Posts: 3,947
Holland MI Ottawa
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2boltmain Offline
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Holland MI Ottawa
From summer 2008 Engine Masters magazine.

8480497-image(26).jpg (105 downloads)

Keep old mopars alive.
Re: 500 CI RB SIX PACK HELP [Re: 2boltmain] #1792805
04/04/15 01:04 PM
04/04/15 01:04 PM
Joined: Nov 2008
Posts: 85
Washington PA
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69 plymouth rnr Offline OP
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Washington PA
Thanks for the info im going to play with alot of things ... going to use jet plates I think it will be easier to dial in than drilling

Re: 500 CI RB SIX PACK HELP [Re: 2boltmain] #1792806
04/04/15 01:46 PM
04/04/15 01:46 PM
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NJ-USA
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HPMike Offline
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Quote:

"i also hear people talk about pro max but one gentelman I know had problems with the floats hitting their plates?"

Maybe on a plastic float the parting line "Flash" can be sanded down?




I use a razor blade...Takes less than a minute...Just take down the parting line of the mold...

MB

Re: 500 CI RB SIX PACK HELP [Re: HPMike] #1792807
04/05/15 01:04 AM
04/05/15 01:04 AM
Joined: Oct 2003
Posts: 2,391
WASHINGTON, PA
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11secaarcuda Offline
top fuel
11secaarcuda  Offline
top fuel
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Posts: 2,391
WASHINGTON, PA
Nick, what do your spark plugs look like after trying to get it to run? Were you able to get a timing light on it yet?
Mike

8481174-unnamed(2).jpg (49 downloads)

67 Dart GT 340 4 speed
70 AAR Cuda 408 6 barrel
96 Indy Ram original owner
2011 Hemi Durango
Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1792808
04/05/15 01:07 AM
04/05/15 01:07 AM
Joined: Oct 2003
Posts: 2,391
WASHINGTON, PA
1
11secaarcuda Offline
top fuel
11secaarcuda  Offline
top fuel
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WASHINGTON, PA
Quote:

Ok guys the carbs are brand new from summit on sale around christmas not sur of the numbers or application . i did buy a spring kit and am in the prossess of using the yellow springs .because they are the lightest and i have low vaccume . I leaning to buyimg the quick fuel plates and block so no drilling just jets . also I m having a hard time doing anything because i cant keep it running long enough to check timing , floats ect...




If you have an electric fuel pump, set the floats with the pump running, but not the engine. This will get you close enough for starting.


67 Dart GT 340 4 speed
70 AAR Cuda 408 6 barrel
96 Indy Ram original owner
2011 Hemi Durango
Re: 500 CI RB SIX PACK HELP [Re: 11secaarcuda] #1792809
04/05/15 09:14 PM
04/05/15 09:14 PM
Joined: Nov 2008
Posts: 85
Washington PA
6
69 plymouth rnr Offline OP
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69 plymouth rnr  Offline OP
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Washington PA
Thanks Mike parts didnt show so didnt mess with it this weekend

Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1798918
04/08/15 10:26 PM
04/08/15 10:26 PM
Joined: Nov 2008
Posts: 85
Washington PA
6
69 plymouth rnr Offline OP
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69 plymouth rnr  Offline OP
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Posts: 85
Washington PA
HEY GUYS, THANKS !!! Her is what I did and what happened so far...Quick fuel jet plates and metering block 70 in the center
front 84 choke side and 88 throttle
Rear 88 choke and 90 throttle
blue cam...2.5 power valve
stock 30 cc pump... air fuel mix is 1 1/2 to 1 3/4 turns
Fires up runs idles got it warm and did hole shots in driveway No stumble No stall !!!! Im close Need to check timing and vacume . Thanks NICK

Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1799150
04/09/15 03:24 AM
04/09/15 03:24 AM
Joined: Oct 2006
Posts: 405
Sweden
Mopar Guy Offline
mopar
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Posts: 405
Sweden
I did just about what you are doing ! Mine is a 505 stroker and i ended up whit 70 jets in center carb and 82-84 jets on outer carbs. There is a realy good articel from a car Magazine that Jerry Binder wrote regarding how the carbs work and how to tune that i saved on my lap top that i can send you if you like !?

Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1799248
04/09/15 11:09 AM
04/09/15 11:09 AM
Joined: Jan 2003
Posts: 24,301
Brookeville, Md
Mr.Yuck Offline
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Brookeville, Md
Originally Posted By 69 plymouth rnr
Thanks <img src="/ubbthreads/images/graemlins/thumbs.gif" alt="" />, what is your combo ?? <img src="/ubbthreads/images/graemlins/beer.gif" alt="" />


Stock stroke .030 11.2:1 440, ported stage VI heads, totally stock intake and carbs, 588 solid roller cam, 2" hookers, 3800 Turbo Action convert, RMVB 727, 3.91's.
I guess I need to step down because I run 70 center jets...hahaha

Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1799461
04/09/15 03:39 PM
04/09/15 03:39 PM
Joined: Aug 2003
Posts: 33,400
Bend,OR USA
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Cab_Burge Offline
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Originally Posted By 69 plymouth rnr
HEY GUYS, THANKS !!! Her is what I did and what happened so far...Quick fuel jet plates and metering block 70 in the center
front 84 choke side and 88 throttle
Rear 88 choke and 90 throttle
blue cam...2.5 power valve
stock 30 cc pump... air fuel mix is 1 1/2 to 1 3/4 turns
Fires up runs idles got it warm and did hole shots in driveway No stumble No stall !!!! Im close Need to check timing and vacume . Thanks NICK
I've ran a bunch of different sixpaks on a lot of different motors, on your deal I would check the vacume idling with the motor warmed up in gear and then use a power valve one to two inches lower than that. The reason I'm suggesting that is I had a sixpak on my 518 C.i. low deck pump gas stroker motor with a big solid roller cam in it that I had a 2.5 power valve in the center carb., I swapped the motor out(reuse the same carbs on both motors) to a smaller 464 C.I. RB motor with a smaller hydraulic cam and found out that the 2.5 power valve would start to close and reopen in high gear in the 1/4 mile, NOT GOOD! I put either a 4.5 or a 5.5 ,(CRS)power valve in it and that cured the problem in high gear. IHTHs

Last edited by Cab_Burge; 04/09/15 03:40 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1799611
04/09/15 06:49 PM
04/09/15 06:49 PM
Joined: Nov 2008
Posts: 85
Washington PA
6
69 plymouth rnr Offline OP
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Washington PA
Hi guys all im saying is I threw som stuff at it and it works , not saying its perfect but close . I still need to drive it , check timing and vac .
Right now i have a good problem.... It runs and stays running, now the fine tune.. PS and if any one has any info be it personal six pack stuff or a story from a magazine whatever post it !!!! No two engines are the same so what works for one six pack stroker may not work for the other.
Thanks again guys!!!

Re: 500 CI RB SIX PACK HELP [Re: 69 plymouth rnr] #1800033
04/10/15 03:12 AM
04/10/15 03:12 AM
Joined: Oct 2006
Posts: 405
Sweden
Mopar Guy Offline
mopar
Mopar Guy  Offline
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Posts: 405
Sweden
My experience is that the stock center carbs is kind of a restriktion on a large engine like a 500 cube lung ! I ended up whit a set of BG that flow equal on al 3 carbs and that work´t better for me aand one realy nice benefit is that the outer carbs have acc pumps and they are side hung float carbs whit lose jets on al carbs same as the old back in the days Direct Connetion sold 82&83 carbs that also outpreform the stock carbs if they are tuned corekt.

inst1.JPGP1020388.JPG
Last edited by Mopar Guy; 04/11/15 02:19 PM.
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