Six pack carb's made simple

[deepockets]

Not!  I didn't have any thing better to do, so I figured I'd put in adjustable air bleeds for the idle circuits. I still haven't figured them out yet, but getting closer. The metering block I bought from pro max just doesn't work. Tried it twice with two different power valves and it just wont rev past 3000 rpm. Put the same power valves in the stock metering plate, and they work great. I drilled out the butterfly's a little too big, and the rpms at 1200 to 1300 is just a tad too high. So I found some countersunk rivets that worked out really nice and set flush to the blades. So now I can play with the bleeds and see how they affect things. At least I'm doing all this on the test stand before it goes in the car. Here's some before, during, and after pictures.

[rt green]

I hope it works out for you. could you see what pro max was trying to improve on their stuff vs stock?

[deepockets]

They had said that they build it to better suit a larger ci engine. When I told him of what was happening, he said he never heard of that. I'm not interested in trying it any more. It has all kinds of little jets in it.

[Ghoste]

I hope you keep us updated as I'm curious how it all works out.  Most say the best thing to do with the Six Pack is to leave exactly as Chrysler designed it. 

[BSB67]

I hope you keep us updated as I'm curious how it all works out.  Most say the best thing to do with the Six Pack is to leave exactly as Chrysler designed it.  

I purchased my 6 pac in 1978 from Mancini (back when they were on 6 mile road, and the people that worked there were named.....Mancini).  That 6 pack has been on everything from a 280 hp 383 to 600 hp 500 in motors, and just about everything in-between.  Always runs great, only change the main jetting, and even those don't change much.  

[deepockets]

I have a saying that I say to people once and awhile "There's something to be said for leavening things alone"  I  can't always take my own advice and make things complicated. I'll keep you updated as I go.

[BSB67]

I have a saying that I say to people once and awhile "There's something to be said for leavening things alone"  I  can't always take my own advice and make things complicated. I'll keep you updated as I go.

I'm not sure what you are trying to fix exactly, but if it is because the motor wont rev over 3000 rpm, this is not your problem.  In fact, it is not a carb problem, unless the outboard carbs are not opening.

[Ghoste]

I purchased my 6 pac in 1978 from Mancini (back when they were on 6 mile road, and the people that worked there were named.....Mancini).  

Yeah, you walk in their showroom now and most of the stuff on display is for Chevy and a little Ford.  Mopar is their mainstay but it sure isn't all they do.
I was there back in that time period a couple of times too, were they on McNicholls for a while?

[BSB67]

I purchased my 6 pac in 1978 from Mancini (back when they were on 6 mile road, and the people that worked there were named.....Mancini).  

Yeah, you walk in their showroom now and most of the stuff on display is for Chevy and a little Ford.  Mopar is their mainstay but it sure isn't all they do.
I was there back in that time period a couple of times too, were they on McNicholls for a while?

Yes, McNichols = 6 Mile Rd.  My old stomping grounds.

[Ghoste]

Ok.  You aren't in the Detroit area now though are you?

[BSB67]

No.  Bunch of family still there.

[rt green]

well, how did you come out?  did it work?

[68pplcharger]

 

[deepockets]

I just got thru making a drill fixture to drill and ream some new jets. since I'm experimenting, I bought a few jets that were on the smaller side. carbs are all clean and put back together. I'll have it running again this weekend. I'll give ya heads up on results.

[BSB67]

I just got thru making a drill fixture to drill and ream some new jets. since I'm experimenting, I bought a few jets that were on the smaller side. carbs are all clean and put back together. I'll have it running again this weekend. I'll give ya heads up on results.

Are you drilling jets?, or bleeds and/or restrictors?  I would buy the jets the as they are sized by flow rating and not hole size. For bleeds and restrictors, I think you can get blanks from BLP for like 10 cents each.

[deepockets]

drilling, then reaming to size. Yes I've read that there flowed. I'm also checking them with pin gages.

[rt green]

testing. good?  bad?   same?  more adjustable?

[deepockets]

Things are looking up. I've got things where I'm happy and need to leave things alone now. When I had the carbs off I set the idle screw to where there was .020 of the transition slot exposed and it idles real nice right there also. Prior to this I could remove the idle screw completely and the idle would not go lower than 1200 to 1300 rpm. That was caused by me enlarging the holes in the outer carbs butterfly's a little too much. As far as the adjustability of the air bleeds, they'll play better part when I put the engine in the car and check the air/fuel ratio when driving. Most of my tuning mistakes were caused from my inexperience with these carbs. I'm not an expert, but know a lot more about these things than before I started.