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Anyone running the CH-28? #496750
10/14/09 12:38 AM
10/14/09 12:38 AM
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Oregon
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AndyF Offline OP
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Just got a complete setup from Edelbrock. Cool looking parts but I've never run this combo before. The air cleaner is a little dinky for a Mopar. I think they would sell more of these if the air cleaner was large enough to accept the 440+6 element.

5544032-CH28.jpg (350 downloads)
Re: Anyone running the CH-28? [Re: AndyF] #496751
10/14/09 12:42 AM
10/14/09 12:42 AM
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Gainesville,FL
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A friend of mine runs that setup,yes the filter is a restiction,but easily removed at the track.

Re: Anyone running the CH-28? [Re: AndyF] #496752
10/14/09 12:47 AM
10/14/09 12:47 AM
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Downtown Roebuck Ont
Twostick Offline
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Any chance you're going to dyno that set-up? I would be curious to see how it stacks up against a Performer RPM with say a 950 Holley or a (gasp) thermoquad. It do look good if nothing else.

Kevin

Re: Anyone running the CH-28? [Re: AndyF] #496753
10/14/09 01:49 AM
10/14/09 01:49 AM
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Bend,OR USA
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Andy, one of my customers(and freinds) used that set up on a pump gas stroker in his wifes car,1968 Charger R/T. They have dyno tuned on a engine dyno and a once the motor was in the car they chassis dynoed it also. They had to rejet the motor down on the chassis dyno for the best performance (HP and torque)after jetting it on the engine dyno for best power and torque I can probally get copys of both set ups, dyno sheets and jetting if you want one I'm not sure on the air cleaner they used on either tests


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Anyone running the CH-28? [Re: AndyF] #496754
10/14/09 02:05 AM
10/14/09 02:05 AM
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Wethersfield,CT
Ray440 Offline
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Quote:

Just got a complete setup from Edelbrock. Cool looking parts but I've never run this combo before. The air cleaner is a little dinky for a Mopar. I think they would sell more of these if the air cleaner was large enough to accept the 440+6 element.



Do you think that maybe a stock HEMI airgrabber air cleaner could fit with some mods?


1969 Plymouth Road Runner 440 auto
2017 Ram 1500 Quad Cab 5.7 Hemi
Re: Anyone running the CH-28? [Re: AndyF] #496755
10/14/09 03:20 AM
10/14/09 03:20 AM
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Hamburg / Germany
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I run it in my 1969 chrysler 300 and I am very happy with it.
Tons of torque - just what you need for a complete
set up of 4400lbs.
Best ET so far 14@170km/h , 60ft was horrible 2.45.
I was running on General Tire street tires with 45psi pressure.
So absolute no grip. And kickdown linkage wasnīt right.
The tranny shiftet at 3500 into second and at 4400 into third.
Normal shift point should be at 6200. And the carbs runs to fat.
The heads are homeported edelbrocks.
Cam is a custom solid from Scott Brown. 10.76.1 compression,
1,75" headers into 3" system with h-pipe. 3:91 rear axle.
Havenīt been on the dyno yet, but car was built to run 12s.
Maybe next week I make it to the chassis dyno.
To me the air cleaner looks to small too but if I have
enough time this winter I want to built a cold air intake system.

ps: Like your new book


Hamburg/Germany

69 Chrysler 300
446cui Dual Quad
12.64 @ 110.7

Re: Anyone running the CH-28? [Re: Cab_Burge] #496756
10/14/09 09:31 AM
10/14/09 09:31 AM
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Virginia Beach, VA
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Quote:

Andy, one of my customers(and freinds) used that set up on a pump gas stroker in his wifes car,1968 Charger R/T. They have dyno tuned on a engine dyno and a once the motor was in the car they chassis dynoed it also. They had to rejet the motor down on the chassis dyno for the best performance (HP and torque)after jetting it on the engine dyno for best power and torque I can probally get copys of both set ups, dyno sheets and jetting if you want one I'm not sure on the air cleaner they used on either tests



i had to do the same thing on my 580.on the chassis dyno i picked up another 22 rwhp over the way it came off the engine dyno.i also had to jet down.....


68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
Re: Anyone running the CH-28? [Re: Twostick] #496757
10/14/09 10:18 AM
10/14/09 10:18 AM
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Oregon
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Quote:

Any chance you're going to dyno that set-up? I would be curious to see how it stacks up against a Performer RPM with say a 950 Holley or a (gasp) thermoquad. It do look good if nothing else.

Kevin




I am going to dyno it but I'm going to compare it to a tunnel ram. Basically a dual carb showdown. The engine in the picture is a 505 with RPM heads and a hyd roller cam. Heads had a little touch up work done by Dwayne years ago. Motor should make some torque but it isn't a high power setup.

Re: Anyone running the CH-28? [Re: AndyF] #496758
10/14/09 11:26 AM
10/14/09 11:26 AM
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Downtown Roebuck Ont
Twostick Offline
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I predict the only category the CH 28 will be superior in will be hood clearance.

Kevin

Re: Anyone running the CH-28? [Re: Twostick] #496759
10/14/09 11:43 AM
10/14/09 11:43 AM
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Backwater, PA
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I've worked on a CH-60! But never owned one.


This post is available in double vision where drunk.
Re: Anyone running the CH-28? [Re: Ray440] #496760
10/14/09 11:44 AM
10/14/09 11:44 AM
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Posts: 3,533
Indiana
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Quote:

Quote:

Just got a complete setup from Edelbrock. Cool looking parts but I've never run this combo before. The air cleaner is a little dinky for a Mopar. I think they would sell more of these if the air cleaner was large enough to accept the 440+6 element.



Do you think that maybe a stock HEMI airgrabber air cleaner could fit with some mods?




I don't know about the Hemi, but the early factory DQ intakes are 7 1/8" center-center spacing. New Eddy stuff is 6 7/16" IIRC.

This aircleaner is bigger and would look much nicer with those valvecovers. $70 more than that cheapie chrome one, too, which isn't much in the grand scheme of that induction setup.
http://www.summitracing.com/parts/EDL-41...mp;autoview=sku

5544617-edl-41193_w.jpg (91 downloads)

Parts I seek: driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set 16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better. 69-73 C-body caliper brackets and/or splashields Send a PM.
Re: Anyone running the CH-28? [Re: AndyF] #496761
10/14/09 12:30 PM
10/14/09 12:30 PM
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Syracuse,NY
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Andy,

Don Dulmage used to ( probably still does) run that combo I think. He is on here, not sure if he frequents the board much. He is in Canada and I know has ran it for many years. Maybe someone can help me out with his contact info here.

He was running it on a early 70's Sattelite or Roadrunner and ran quite well. HEavy car.


RIP Monte Smith

Your work is a reflection of yourself, autograph it with quality.

WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
Re: Anyone running the CH-28? [Re: Fury Fan] #496762
10/14/09 01:17 PM
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I'll check out that larger air cleaner. I didn't know they had that one. I have seen the new Edelbrock valve covers and they look great also.

Re: Anyone running the CH-28? [Re: CompWedgeEngines] #496763
10/14/09 01:18 PM
10/14/09 01:18 PM
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Yep, I have Don's book and I remember how much he liked this intake. I'm pretty sure a good single plane intake with a nice 4150 carb will blow away the CH-28 setup on the dyno but it still looks cool.

I'll get it on the dyno and find out how she does. Sometimes I'm surprised at what I learn.

Re: Anyone running the CH-28? [Re: CompWedgeEngines] #496764
10/14/09 02:08 PM
10/14/09 02:08 PM
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Hamburg / Germany
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Quote:

Andy,

Don Dulmage used to ( probably still does) run that combo I think. He is on here, not sure if he frequents the board much. He is in Canada and I know has ran it for many years. Maybe someone can help me out with his contact info here.

He was running it on a early 70's Sattelite or Roadrunner and ran quite well. Heavy car.




I own his book also and had lots of email conversation with him.
very nice guy! He made a small video also. He ran 11.50 or so in
a full 74 charger of 4150lbs.. With the CH-28. So if the components are right, they are excellent for heavy cars.
For sure you canīt put a 300° cam in and say it is s.... It is all about the combo.
"big-d at sympatico.ca". Say hello to him from Dennis Stoffers from Hamburg.


Hamburg/Germany

69 Chrysler 300
446cui Dual Quad
12.64 @ 110.7

Re: Anyone running the CH-28? [Re: AndyF] #496765
10/14/09 05:54 PM
10/14/09 05:54 PM
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Ohio
racerAL Offline
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Ohio
i've had it off and on the car 3 times...i'm having fuel delivery/pressure/volume issues that aren't as bad when i have the single 4 on it,so thats how i finished the season..i plan on changin fuel systems over the winter and hope to start next season with the CH-28..

5545268-engine015.jpg (109 downloads)

-1967 Plymouth Satellite #3555
446 cid on E-85
best 1/4 et 10.577 @ 127.58
best 1/8 et 6.722 @ 100.68
best 60ft. 1.419
Re: Anyone running the CH-28? [Re: Twostick] #496766
10/14/09 07:29 PM
10/14/09 07:29 PM
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Canada
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Quote:

I predict the only category the CH 28 will be superior in will be hood clearance.

Kevin




It's pretty danged awesome for hood - AND bonnet- clearance!

I run one on my Jensen Interceptor, it's a 9.35 to 1 compression 440, .030" over, ported heads, 270 Comp Cam, and two little Edelbrock 500s. It hasn't been to the track yet but it seems to run really good right out of the box, the idle is steady and solid.





I was thinking of trying two Edelbrock 600s, but the engine is pretty mild, the car has 3.08 gears, and it doesn't have a stroker crank or anything.... maybe I'll change it down the road if it doesn't do what I hope!


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496767
10/14/09 07:36 PM
10/14/09 07:36 PM
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Jacksonville, FL
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Has anyone tried it with Holley carbs or are the Eddy/Carters the only ones that fit??


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: Anyone running the CH-28? [Re: Chris2581] #496768
10/14/09 08:01 PM
10/14/09 08:01 PM
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Canada
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Quote:

Has anyone tried it with Holley carbs or are the Eddy/Carters the only ones that fit??




My Edelbrocks have about 1/8" between the carb bases! I think it is 6 3/8" center to center of the carbs.... pretty tight!


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496769
10/14/09 09:13 PM
10/14/09 09:13 PM
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I have a pair of 500 cfm carbs as well as a pair of 800 cfm carbs. I think I'll run the 500 cfm carbs on this motor even though it is 505 inches and 12:1.

Re: Anyone running the CH-28? [Re: AndyF] #496770
10/14/09 11:41 PM
10/14/09 11:41 PM
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Canada
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Quote:

I have a pair of 500 cfm carbs as well as a pair of 800 cfm carbs. I think I'll run the 500 cfm carbs on this motor even though it is 505 inches and 12:1.




I can't wait to see the results!


I want to put more power under the hood/bonnet of my Jensen as time goes by.... it will interest ME for sure!


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496771
10/14/09 11:57 PM
10/14/09 11:57 PM
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Between a rock & a hard place
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Here is Don's ink in Chrysler Power back in the day! He got ALOT out of that combo and many would be advised to take it to heart before calling Indy, using the stroker stuff, etc.

Re: Anyone running the CH-28? [Re: cudadoug] #496772
10/14/09 11:58 PM
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Re: Anyone running the CH-28? [Re: cudadoug] #496773
10/14/09 11:58 PM
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Re: Anyone running the CH-28? [Re: cudadoug] #496774
10/15/09 12:02 AM
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Re: Anyone running the CH-28? [Re: cudadoug] #496775
10/15/09 12:05 AM
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yea, another...

Re: Anyone running the CH-28? [Re: cudadoug] #496776
10/15/09 12:06 AM
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last page...11.50's @ 4,100 lbs. He is right, that's mid 10's in an a-body! With parts that many consider "junk".

Re: Anyone running the CH-28? [Re: Chris2581] #496777
10/15/09 04:35 PM
10/15/09 04:35 PM
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Manitoba, Canada
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Quote:

Has anyone tried it with Holley carbs or are the Eddy/Carters the only ones that fit??




Nope it's edelbrocks or nothing. And I bet they made it that way on purpose. I looked into this once. No way a pair of holleys would even come close to fitting. Only way to do the dual holleys is a tunnel ram or possibly the early 60's stock dual quad intake? Although it looks so bad for flow who would bother...

Re: Anyone running the CH-28? [Re: cudadoug] #496778
10/15/09 07:55 PM
10/15/09 07:55 PM
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Central NC
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Quote:

last page...11.50's @ 4,100 lbs. He is right, that's mid 10's in an a-body! With parts that many consider "junk".



Not knocking his results(especially back in the day)but the 5000 stall and 4.56 gears had a lot to do with it IMO.

Re: Anyone running the CH-28? [Re: gch] #496779
10/15/09 08:33 PM
10/15/09 08:33 PM
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Canada
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Quote:

Quote:

last page...11.50's @ 4,100 lbs. He is right, that's mid 10's in an a-body! With parts that many consider "junk".



Not knocking his results(especially back in the day)but the 5000 stall and 4.56 gears had a lot to do with it IMO.




If I can somehow get a 12.99 I would be truly amazed, and my Jensen is 3600 pounds.....
I think realistically I'll be a second above that with my 3.08 gears and 235/60/15s...?


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496780
10/15/09 11:12 PM
10/15/09 11:12 PM
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Central NC
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With that 26" tire you may rev up like it has a 3.23 gear.You need torque in that thing.

Re: Anyone running the CH-28? [Re: gch] #496781
10/16/09 12:47 AM
10/16/09 12:47 AM
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Quote:

With that 26" tire you may rev up like it has a 3.23 gear.You need torque in that thing.




That's why I went with 500 carbs, a 270 Comp Cam and 9.35 to 1 compression....
I've ran a ton of tunnel rams before, but never a CH28 or a low rise 2x4bbl....


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: Fury Fan] #496782
10/22/09 09:28 PM
10/22/09 09:28 PM
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Oregon
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Thanks for the tip FuryFan, the classic air cleaner showed up today in the mail and it does look a lot better.

Re: Anyone running the CH-28? [Re: AndyF] #496783
10/22/09 11:31 PM
10/22/09 11:31 PM
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South Jersey
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Wow what a difference that made.

Re: Anyone running the CH-28? [Re: kruger] #496784
10/23/09 12:08 AM
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Looks way better IMO!


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: AndyF] #496785
11/27/09 04:42 PM
11/27/09 04:42 PM
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I just finished building a linkage kit for this intake. Nobody seemed to make a throttle bracket or a return spring setup so I designed my own. I'll stock a few in inventory by the end of the year in case anyone else needs it.

5630688-CH28.jpg (146 downloads)
Re: Anyone running the CH-28? [Re: AndyF] #496786
11/27/09 07:58 PM
11/27/09 07:58 PM
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Quote:

I just finished building a linkage kit for this intake. Nobody seemed to make a throttle bracket or a return spring setup so I designed my own. I'll stock a few in inventory by the end of the year in case anyone else needs it.




Can the factory bracket for the kickdown be used with that bracket??


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496787
11/27/09 08:49 PM
11/27/09 08:49 PM
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Missouri
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Quote:

Quote:

I just finished building a linkage kit for this intake. Nobody seemed to make a throttle bracket or a return spring setup so I designed my own. I'll stock a few in inventory by the end of the year in case anyone else needs it.




Can the factory bracket for the kickdown be used with that bracket??




Andy, if you get any jetting suggestions would you share? I have no O2 tools or access/$$ for any kind of dyno info.

CMG, I had a ton of factory kickdown hardware to work with and couldn't just "bolt-on" any of them. I took one, cut the cable mounting off and added welded it to another (see attached). Also had to grind the bracket to fit the CH28. Remember, this is a driver not a show car. I needed kickdown, throttle, and cruise and this is what worked for me. Yes, all oem parts.
Russ:) If the pic doesn't work with this reply I will try to shrink it and do another reply.

5631150-IMGP2986.JPG (91 downloads)

BigBlock 74 Swinger
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496788
11/27/09 09:33 PM
11/27/09 09:33 PM
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Oregon
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AndyF Offline OP
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Quote:

Quote:

I just finished building a linkage kit for this intake. Nobody seemed to make a throttle bracket or a return spring setup so I designed my own. I'll stock a few in inventory by the end of the year in case anyone else needs it.




Can the factory bracket for the kickdown be used with that bracket??




Nope, I have a Doug Nash 5 speed in my car so I didn't try to accomodate the factory kickdown in my design.

Re: Anyone running the CH-28? [Re: bb74swngr] #496789
11/28/09 03:31 AM
11/28/09 03:31 AM
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Canada
CrAzYMoPaRGuY Offline
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I made an interconnecting piece from flat stock for my carbs, and drilled a hole at the exact location the original carb linkage rod was.
I bolted the factory piece in the factory location, and I hooked up my kickdown and throttle linkage bracket to it....
I'll post a pic when it stops pouring rain!


CrAzYMoPaRGuY
Re: Anyone running the CH-28? [Re: CrAzYMoPaRGuY] #496790
11/28/09 12:51 PM
11/28/09 12:51 PM
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Holland MI Ottawa
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2boltmain Offline
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Holland MI Ottawa
You must remember that setup was a hot setup 35 years ago. It is definately a more street than strip deal. That being said I have run it on 2 Challengers with 440s, 509 cams and 3000rpm stall converters. It is FANTASTIC!!! Great sound and even better looks- plus its a period hop up from a day when more carbs simply equaled more power output. On a 440 Edelbrock says the manifold is an idle to 6000 rpm setup. I love that setup. Wish they made a manifold for the smallblock.


Keep old mopars alive.
Re: Anyone running the CH-28? [Re: AndyF] #496791
11/30/09 05:04 PM
11/30/09 05:04 PM
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Moved to N.E. Tennessee
GomangoCuda Offline
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Quote:

I just finished building a linkage kit for this intake. Nobody seemed to make a throttle bracket or a return spring setup so I designed my own. I'll stock a few in inventory by the end of the year in case anyone else needs it.



Why not progressive linkage similar to a street hemi?
I think power will be similar to a 6pk.


In theory, there is no difference between theory and practice. In practice, there is.
Re: Anyone running the CH-28? [Re: GomangoCuda] #496792
11/30/09 06:42 PM
11/30/09 06:42 PM
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Oregon
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AndyF Offline OP
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I can't think of any reason to add the complexity of a progressive linkage. Maybe I would need to try it both ways before I understood the issues involved.

Re: Anyone running the CH-28? [Re: AndyF] #496793
12/02/09 01:16 AM
12/02/09 01:16 AM
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Oregon
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AndyF Offline OP
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I finished up the 505 motor and we're ready to go to the dyno. I'll test this intake against a Performer RPM and see how they do. This should be a nice hot street motor or maybe a bracket motor. Comp 292HR hyd roller cam, Edelbrock heads with some mild porting by Dwayne, 4.250 stroke with SCAT 6.800 long rods and Diamond +5cc flat tops. (they aren't domes but they have a +5cc raised flat top) I figure she might hammer out 575 hp or so but we'll see. I'm not sure how the big hyd roller cam will do on the dyno.

5640491-505.jpg (73 downloads)
Re: Anyone running the CH-28? [Re: AndyF] #496794
12/02/09 03:11 AM
12/02/09 03:11 AM
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Manitoba, Canada
DaytonaTurbo Offline
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Cool, can't wait to read the result!

Re: Anyone running the CH-28? [Re: 2boltmain] #496795
12/02/09 04:06 PM
12/02/09 04:06 PM
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The Swamp
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Sixpak Offline
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Quote:

Wish they made a manifold for the smallblock.




Edelbrock DID make a 2x4 inline manifold for a small block - I've seen them personally and for sale on this and various other boards. They're out there..

Re: Anyone running the CH-28? [Re: AndyF] #496796
12/12/09 02:50 AM
12/12/09 02:50 AM
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Oregon
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AndyF Offline OP
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Got the 505 running on the dyno today after the usual little problems. It was making crazy power with the Performer RPM intake and a Holley 1000HP carb. Could be the 20 degree cold air being sucked in from outside? Thing was making so much power I asked the dyno owner to dead weight the dyno in the morning so we know what is going on.

The motor also appeared to be slowly eating a bearing so we stopped testing and will pull the pan off to see what is what. Every pull would put another tiny piece of bearing material into the Oberg. Each piece was about the size of a head of a pin but something is going on down there so we stopped so we can check it out. So bottom line is that I won't have any CH-28 numbers for another week or so.

5662466-dyno2.jpg (66 downloads)
Re: Anyone running the CH-28? [Re: AndyF] #496797
12/12/09 03:26 PM
12/12/09 03:26 PM
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St. Louis, MO
mopardamo Offline
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Hello Andy,

Nice rockers. Good thing for the Oberg. What is the compression and the header specs?

Damon

Re: Anyone running the CH-28? [Re: AndyF] #496798
12/12/09 03:42 PM
12/12/09 03:42 PM
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Las Vegas, NV
dodgeboy11 Offline
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Oh that's just mean. It's making crazy power but you aren't telling us what the numbers are???

Re: Anyone running the CH-28? [Re: mopardamo] #496799
12/12/09 07:03 PM
12/12/09 07:03 PM
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Oregon
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AndyF Offline OP
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Compression is 12:1 with the Edelbrock heads. Headers are 2x32 pipes with 3 1/2 x 15 collectors. Custom built by Stahl. Heads were lightly ported by Dwayne a few years ago, they are not a max effort head at all. Cam is a Comp 292HR hyd roller.

Motor sounds a lot tougher than I expected with the hyd roller cam. Spun the needle on the dyno a lot faster than we expected to! Just need to figure out what is going on in the bottom end before we can get back to testing.

Re: Anyone running the CH-28? [Re: AndyF] #496800
12/18/09 09:35 PM
12/18/09 09:35 PM
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AndyF Offline OP
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Pulled the pan off and looked it all over carefully and couldn't find anything wrong. Bearings has some shiny spots from some stuff going thru the oil and the pump had to be replaced. Only thing we could figure is that a little bit of trash was caught somewhere inside the engine and once the engine started to make power it shook it loose. We got it back together and made a bunch of dyno pulls and the Oberg filter is now nice and clean.

That first day we fired it up it was making 660+ ft-lbs of torque which seemed crazy for such a mild motor. The last several days the motor settled down and hammered out fairly consistent 600-625 ft-lbs and similiar horsepower. The cold air coming into the dyno room last week was below freezing while this week the temp was in the upper 40's and low 50's. So I think that is where the extra power was coming from. Even with the correction factor it was still making more power so evidently the correction factor didn't quite compensate for the extreme cold.

Re: Anyone running the CH-28? [Re: AndyF] #496801
12/18/09 09:50 PM
12/18/09 09:50 PM
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Flint, Michigan
B1Fish540 Offline
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Better find that little speck and put it back in the motor..

Re: Anyone running the CH-28? [Re: AndyF] #496802
12/22/09 02:17 AM
12/22/09 02:17 AM
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AndyF Offline OP
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Here is a picture from the dyno session. The motor sounded really smooth with the CH-28 and dual Edelbrock carbs. With the big Holley carb the idle was fairly choppy. I just thought it was the cam at the time but after hearing how it sounded with the Eddy carbs on there I think the Holley idle circuit needed attention.
Engine made a solid 600/600 with the CH-28 setup. I installed two inch spacers under the carbs because it is a big engine and I figured it could use some extra plenum volume.

5682715-ch28dyno.jpg (95 downloads)
Re: Anyone running the CH-28? [Re: AndyF] #496803
12/22/09 02:00 PM
12/22/09 02:00 PM
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Georgia
66coronet Offline
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So, it lost roughly 25 hp going to the ch-28 setup? Inquiring minds want to know.

Re: Anyone running the CH-28? [Re: 66coronet] #496804
12/22/09 02:23 PM
12/22/09 02:23 PM
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Oregon
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AndyF Offline OP
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Basically that is correct. We ran a bunch of pulls with both the Performer RPM and the CH-28. On average the CH-28 was down 15 or 20 hp from the Performer RPM. I wouldn't say that either setup was perfectly tuned so your numbers might vary.

Going into this dyno session I really didn't expect the CH-28 to support 600 hp. It is a low rise intake and the airflow has to struggle to get thru all the twists and turns. But it sounded healthy and pulled hard on the dyno.

Re: Anyone running the CH-28? [Re: AndyF] #496805
12/22/09 02:56 PM
12/22/09 02:56 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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That is encouraging for guys contemplating the nostalgic look, but still seeking hp. I wonder how a little porting might work? Maybe no carb spacers under the carbs for a different booster signal?
Pretty impressive, when you figure it was designed in the days when we were hogging out stock iron heads looking for more hp!


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: Anyone running the CH-28? [Re: gregsdart] #496806
12/22/09 04:33 PM
12/22/09 04:33 PM
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Oregon
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AndyF Offline OP
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Hughes Engines offers a ported version of the CH-28. I thought about getting a ported intake from them to run some back to back tests but I just didn't have the time to make that happen.

This is a 505 inch motor with 12:1 compression so I wouldn't expect the average "street" motor to make this kind of power. A 440 with 9:1 compression would be down a bunch of power from this setup but I think this intake would still run hard on a less radical engine.

Re: Anyone running the CH-28? [Re: AndyF] #496807
01/03/10 06:27 PM
01/03/10 06:27 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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i would expect a decent single plane intake to best the RPM by at least 20-25hp on a 12:1 505" motor, which says to me the CH-28 is down about 40-50hp from a decent single plane(like a Victor).


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
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