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Six Pack carb parts #2608152 01/17/19 03:53 PM 01/17/19 03:53 PM
Joined: May 2004 Posts: 5,123 Warrenton, VA RoadRunnerJD OP master
RoadRunnerJD OP master Joined: May 2004 Posts: 5,123 Warrenton, VA	Has anyone installed the ProMax metering plates in their outboard carbs? Do they work good? What size jets do you use? Are they supposed to be the same size as the orifices in stock metering plates? I bought these for mine but had second thoughts about using them. I was concerned that mine had been modified and thought the ProMax might help get the carbs back to square one.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2608374 01/18/19 12:07 AM 01/18/19 12:07 AM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Nothing wrong with those metering plates, I've put them in carbs at customers request and they run great. However, you certainly don't need them to make your carbs run right, and especially not to get them back to "Square One" (stock). There looks to be a jetting guide on the paper underneath them in your pic. If that doesn't answer your questions you should probably call Pro-Max.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2608418 01/18/19 01:43 AM 01/18/19 01:43 AM
Joined: Jun 2012 Posts: 1,905 MYRTLE BEACH SOUTH CAROLINA E ek3 top fuel
ek3 top fuel E Joined: Jun 2012 Posts: 1,905 MYRTLE BEACH SOUTH CAROLINA	I have used them ,, worked well for me. if you find that you need to adjust the fuel rate , it is nice to have a quick and easy way to do it. I used a dyno run to get mine right . 1 time and it was right on!

Re: Six Pack carb parts [Re: RoadRunnerJD] #2608420 01/18/19 01:46 AM 01/18/19 01:46 AM
Joined: Jan 2003 Posts: 1,909 Nebraska 4 4406bbl top fuel
4406bbl top fuel 4 Joined: Jan 2003 Posts: 1,909 Nebraska	Plates are fine, Front plate #34 Idle feed .036 Main jet .089-.089 Rear plate #35 Idle feed .036 Main jet .086 right .093 left Kill bleeds .043 Idle air bleeds .055 High speed bleed.038 Throttle blade hole.078 This is what I found on 3 stock 1970 440 setups, 69s are not the same, 340 is not the same The mopar performance #34, #35 plates match this, some later plates did not match for me, had smaller jets. If this is wrong hopefully someone will correct. Some have said their promax plates had bigger idle feeds so check to be sure. Match a stock 34 and 35 plate to start.

Re: Six Pack carb parts [Re: 4406bbl] #2608759 01/18/19 08:09 PM 01/18/19 08:09 PM
Joined: Feb 2006 Posts: 608 TN 1DGEMAN mopar
1DGEMAN mopar Joined: Feb 2006 Posts: 608 TN	[quote=4406bbl]Plates are fine, Front plate #34 Idle feed .036 Main jet .089-.089 Rear plate #35 Idle feed .036 Main jet .086 right .093 left Kill bleeds .043 Idle air bleeds .055 High speed bleed.038 Throttle blade hole.078 This is what I found on 3 stock 1970 440 setups, 69s are not the same, 340 is not the same The mopar performance #34, #35 plates match this, some later plates did not match for me, had smaller jets. If this is wrong hopefully someone will correct. Some have said their promax plates had bigger idle feeds so check to be sure. Match a stock 34 and 35 plate to start. You seem very knowledgeable about the plates. Do you know what the sizes are on the 340 plates? I had heard that BLP makes the plates and blocks for Pro max true? Real Men shift for themselves

Re: Six Pack carb parts [Re: RoadRunnerJD] #2608765 01/18/19 08:25 PM 01/18/19 08:25 PM
Joined: Jan 2003 Posts: 3,687 South San Francisco, Ca 70sixpkrt master
70sixpkrt master Joined: Jan 2003 Posts: 3,687 South San Francisco, Ca	I've been using those Promax metering plates for the last 15 yrs. No problems with mine. The thing I like about them is you can change jets very easy and not have to worry about finding a stock set of plates. I also don't have to worry about drilling larger size holes in the stock plates. You can drill bigger but not smaller holes. It does include a jetting guide. [img]http://www.imgur.com/hxlGUJt.gif[/img] 4-speed 3:54 Dana 13.01 @107.93 with street tires (not hooking up)

Re: Six Pack carb parts [Re: 1DGEMAN] #2609405 01/20/19 04:15 PM 01/20/19 04:15 PM
Joined: Jan 2003 Posts: 1,909 Nebraska 4 4406bbl top fuel
4406bbl top fuel 4 Joined: Jan 2003 Posts: 1,909 Nebraska	Originally Posted By 1DGEMAN [quote=4406bbl]Plates are fine, Front plate #34 Idle feed .036 Main jet .089-.089 Rear plate #35 Idle feed .036 Main jet .086 right .093 left Kill bleeds .043 Idle air bleeds .055 High speed bleed.038 Throttle blade hole.078 This is what I found on 3 stock 1970 440 setups, 69s are not the same, 340 is not the same The mopar performance #34, #35 plates match this, some later plates did not match for me, had smaller jets. If this is wrong hopefully someone will correct. Some have said their promax plates had bigger idle feeds so check to be sure. Match a stock 34 and 35 plate to start. You seem very knowledgeable about the plates. Do you know what the sizes are on the 340 plates? I had heard that BLP makes the plates and blocks for Pro max true? Sorry I do not know much, just wish those that do know would post the exact stock orifice sizes for the 340 and 440 setup, that way a person would know what they have. It gets a little old seeing people post, oh just return it all to stock size and start there, what is truly stock size? I am pretty sure my 440 specs are correct as I have not been corrected, usually if you post something wrong here you will find out fast. The #34 and #35 plates that you buy from holley now are wrong, or the catalog specs are wrongfor a 6bbl. For the 340 I have little info, #41 plates, .067 kill bleeds. Holley catalog says #41 plate is .033 idle bleed, and .070 main jet....I doubt thats correct for a 6bbl. I sold the 340 stuff off years ago, if I had one I would tear it down and give you the info. Maybe someone that has a 340 that runs right could post what they have next time it is apart.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2609422 01/20/19 05:02 PM 01/20/19 05:02 PM
Joined: Feb 2012 Posts: 4,484 Morristown Tn. 7 71birdJ68 master
71birdJ68 master 7 Joined: Feb 2012 Posts: 4,484 Morristown Tn.	I've used those blue gaskets before, they tore on the first removal, worse than stock gaskets.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2609457 01/20/19 05:53 PM 01/20/19 05:53 PM
Joined: Jan 2003 Posts: 1,909 Nebraska 4 4406bbl top fuel
4406bbl top fuel 4 Joined: Jan 2003 Posts: 1,909 Nebraska	Thats weird, I have used quick fuel and holley blue with no issues. Wonder if there are cheap knockoffs out there.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2609558 01/20/19 08:55 PM 01/20/19 08:55 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Add a VERY light coat of vaseline or white grease to the gasket surfaces and they'll come off a lot easier.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2610019 01/21/19 06:28 PM 01/21/19 06:28 PM
Joined: May 2004 Posts: 5,123 Warrenton, VA RoadRunnerJD OP master
RoadRunnerJD OP master Joined: May 2004 Posts: 5,123 Warrenton, VA	I figured out how to read the jetting guide. My OE plates were definitely modified.

Re: Six Pack carb parts [Re: RoadRunnerJD] #2634583 03/19/19 07:57 PM 03/19/19 07:57 PM
Joined: Jul 2003 Posts: 5,188 upstate western ny sogtx master
sogtx master Joined: Jul 2003 Posts: 5,188 upstate western ny	they work real good - I cried when i saw you sold them never can watch all the ads.... https://lh5.googleusercontent.com/-2TVoO...0429-MOTION.gif

Re: Six Pack carb parts [Re: 4406bbl] #2634620 03/19/19 09:07 PM 03/19/19 09:07 PM
Joined: May 2012 Posts: 1,918 South Bend John Brown top fuel
John Brown top fuel Joined: May 2012 Posts: 1,918 South Bend	Originally Posted by 4406bbl Originally Posted by 1DGEMAN [quote=4406bbl]Plates are fine, Front plate #34 Idle feed .036 Main jet .089-.089 Rear plate #35 Idle feed .036 Main jet .086 right .093 left Kill bleeds .043 Idle air bleeds .055 High speed bleed.038 Throttle blade hole.078 This is what I found on 3 stock 1970 440 setups, 69s are not the same, 340 is not the same The mopar performance #34, #35 plates match this, some later plates did not match for me, had smaller jets. If this is wrong hopefully someone will correct. Some have said their promax plates had bigger idle feeds so check to be sure. Match a stock 34 and 35 plate to start. You seem very knowledgeable about the plates. Do you know what the sizes are on the 340 plates? I had heard that BLP makes the plates and blocks for Pro max true? Sorry I do not know much, just wish those that do know would post the exact stock orifice sizes for the 340 and 440 setup, that way a person would know what they have. It gets a little old seeing people post, oh just return it all to stock size and start there, what is truly stock size? I am pretty sure my 440 specs are correct as I have not been corrected, usually if you post something wrong here you will find out fast. The #34 and #35 plates that you buy from holley now are wrong, or the catalog specs are wrongfor a 6bbl. For the 340 I have little info, #41 plates, .067 kill bleeds. Holley catalog says #41 plate is .033 idle bleed, and .070 main jet....I doubt thats correct for a 6bbl. I sold the 340 stuff off years ago, if I had one I would tear it down and give you the info. Maybe someone that has a 340 that runs right could post what they have next time it is apart. I believe some of my Holley catalogues have the specs for the metering plates. I'll dig them out tomorrow and see what I find. July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.

Re: Six Pack carb parts [Re: John Brown] #2638006 03/28/19 09:06 AM 03/28/19 09:06 AM
Joined: May 2012 Posts: 1,918 South Bend John Brown top fuel
John Brown top fuel Joined: May 2012 Posts: 1,918 South Bend	Here's what my old Holley catalogues have comparing plate numbers to idle restrictions and jet sizes. July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.

Re: Six Pack carb parts [Re: John Brown] #2643043 04/08/19 10:48 PM 04/08/19 10:48 PM
Joined: Feb 2003 Posts: 3,665 NE OHIO K kevin69bman master
kevin69bman master K Joined: Feb 2003 Posts: 3,665 NE OHIO	OK I may be a dummy but there was never a meter block on the out board carbs I don't have any on mine there just the to dump gas????

Re: Six Pack carb parts [Re: kevin69bman] #2643063 04/09/19 12:33 AM 04/09/19 12:33 AM
Joined: Jan 2003 Posts: 1,909 Nebraska 4 4406bbl top fuel
4406bbl top fuel 4 Joined: Jan 2003 Posts: 1,909 Nebraska	No metering blocks on outboards, they use metering plates. The holley chart above is incorrect for a 6bbl. A #34 plate with a .052 main jet will not work in any 1-3/4 plate carb, nor will the #35 with .071 jet. 2 #27 or #5s would be a decent start.

Re: Six Pack carb parts [Re: 4406bbl] #2650709 04/30/19 09:46 PM 04/30/19 09:46 PM
Joined: Jul 2007 Posts: 291 St. Louis I Imrare enthusiast
Imrare enthusiast I Joined: Jul 2007 Posts: 291 St. Louis	Thanks for the information. The two metering plates in my end carburetors had a stamping of #41 with a casting #34R-6153B. The PVCR (Power Valve Channel Restriction) or jetting (fig. A above) is staggered at .086 (driver side) and .073 (pass side) with the Secondary Idle Speed Restriction being .036 on both plates (front & rear carb), driver and pass side. Based on the parts book and what I am understanding then, the metering plates were the same for both front and rear carbs. Is anyone familiar with how many turns out the air mixture screws were set from the factory on the end carbs? I know this must have been a very precise setting because all end carbs came with "plugs" over the adjusting needles so they couldn't be messed with. Thanks

Re: Six Pack carb parts [Re: Imrare] #2652175 05/05/19 10:24 AM 05/05/19 10:24 AM
Joined: Aug 2009 Posts: 1,324 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,324 Ohio	As an original owner of an A12, if my memory (I'm 77) serves me right, when I tried to improve the bad idle characteristics, the screws were barely, if at all, off the seats. The best results were 1/8 or a 1/4 turn off the seat. Joe

Re: Six Pack carb parts [Re: jlatessa] #2652253 05/05/19 12:23 PM 05/05/19 12:23 PM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Originally Posted by jlatessa As an original owner of an A12, if my memory (I'm 77) serves me right, when I tried to improve the bad idle characteristics, the screws were barely, if at all, off the seats. The best results were 1/8 or a 1/4 turn off the seat. Joe I just finished two sets of A12 carbs,one for a member here and the other a member on the A12 site that still had the original lead plugs,both sets were out exactly two turns except the driver side front left on the one set and it was 1 3/4 turns out.

Re: Six Pack carb parts [Re: 62maxwgn] #2652291 05/05/19 02:05 PM 05/05/19 02:05 PM
Joined: Aug 2009 Posts: 1,324 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,324 Ohio	So much for my memory...LOL Joe

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