dm440c
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Post by dm440c on Sept 5, 2014 8:07:09 GMT -5
Great info here guys!! Getting ready to run my first mopar (79 doba)and I have been wondering what to do for a carb and intake. Looks like a 4412 will replace my carter!! Any of you have good luck with an air gap intake or should I save my $$$ an run the stock intake with an adaptor for the 4412??? Just bought an hei distributor to eliminate the smog crap as well. Any good info to help me there??? I pretty much agree with seventyonehemicuda across the board. I run the 600 Edelbrock Performer model on all of my 4 bbl derby engines regardless of displacement. I run only the factory iron manifolds on all of my derby engines; aftermarket intakes are a waste of money for dubious benefit on a derby engine in my opinion. I experiment frequently with different ignition systems but my standard setup is plain ol' Mopar points; you'll find all you need to know about that in the wiring and small block engines topics. I think I saw your post in a different topic that you have a small block in your car... I didn't catch whether it was a 318 or 360. Not sure what manifold it has now, but there are a variety of carbs and adapters discussed in this thread for all of the various combinations out there.
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Post by HEADSTRONG1 on Sept 5, 2014 9:25:33 GMT -5
The car has a 360 with a 2bbl carb, 904 tranny. Any idea what gears came stock in this model '79 cordoba? Need to get rid of the electronic spark control system and change up the carb. I read all the threads about what carb to run and most of you state that the Holley 4412 is the 2bbl of choice. Are you guys running the circle track edition or just the standard?
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dm440c
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Post by dm440c on Sept 5, 2014 11:06:50 GMT -5
I just use the standard 4412 with a Mr Gasket #1937 adapter on the factory manifold. The factory axle is a C clipper with highway gears. My advice is to take the money you would have wasted on an intake manifold and apply it towards an 8-3/4 axle setup with some decent gears. See the Mopar axles thread for more info.
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Post by destructiondylan on Apr 20, 2015 15:30:54 GMT -5
Hey guys. Ran a 76 doba last year with a 400 in it. Had a carter 4bbl on it when i got it with an adapter plate. Motor ran good i just thought it was rich. Kept stalling in the derby after big hits and as soon as it quit id get flames out the stacks. It fired up and ran again every time i just hated all the restarts. First mopar ive ran. Last car was a Buick with a 455. Had a q-jet on it that i rebuilt and kept. It seemed to run a bit leaner as it ran better as it got hotter but never stalled. Was thinking about puttin it on the 400 as i know it will fit without the adapter. Im just worried if it runs leaner it might cause too much heat. Any input?
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Post by seventyonehemicuda on Apr 20, 2015 22:45:12 GMT -5
Hey guys. Ran a 76 doba last year with a 400 in it. Had a carter 4bbl on it when i got it with an adapter plate. Motor ran good i just thought it was rich. Kept stalling in the derby after big hits and as soon as it quit id get flames out the stacks. It fired up and ran again every time i just hated all the restarts. First mopar ive ran. Last car was a Buick with a 455. Had a q-jet on it that i rebuilt and kept. It seemed to run a bit leaner as it ran better as it got hotter but never stalled. Was thinking about puttin it on the 400 as i know it will fit without the adapter. Im just worried if it runs leaner it might cause too much heat. Any input? 99% chance that you were running a big ole thermoquad carb on your big block 400 (has a big black plastic like section in the middle body of the carb) these have HUGE float bowls, on big hits they love to spill over and flood the engine(stall then black smoke pours out of stacks while cranking). i love t-quads for street use, i run one on my 77 aspen rt (318 with a thermoquad from a 400) if you know what you are doing with a thermoquad you can work magic as far as street use is concerned... however the derby racket is a whole new ball game. i run edelbrock 750's on all my big blocks. and 600's on all my small blocks. a q-jet is a decent carb (assuming you can tune it) but i guarantee that an edelbrock will make you very happy.
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Post by destructiondylan on Apr 21, 2015 12:41:57 GMT -5
Definately not a tq. Seen lots of tquads on buddys dodges. This is definately a carter. Says right on the side. And its a wide bore carb that somebody put on aftermarket because it has an adapter plate under it to accept the factory narrow bore manifold. Externally it looks quite similar to an edlebrock
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Post by fordpowerforever on Apr 21, 2015 12:54:52 GMT -5
probably just a carter afb, just about an edelbrock
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Post by seventyonehemicuda on Apr 21, 2015 21:33:32 GMT -5
Just so ya know- Carter made the Thermoquad
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Post by sissybamf on Apr 26, 2015 19:09:16 GMT -5
Ok so I have a holley 2300. 500cfm which I have attached to Mr gasket 1937 on a 318. Car floods out with one pump of gas pedal. Won't stay idling. If we close the choke completely it will idle.the carb has been rebuilt just 2 days ago. Put sealant on to ensure no vacuum leaks. I don't see any vacuum holes on carb to put a hose/bolt on. It will run under throttle well though! I have messed with jets and the fuel screw/nut. I am at a loss any advice is welcome.
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Post by seventyonehemicuda on Apr 26, 2015 20:02:44 GMT -5
-screw in the needle screws on the front all the way down till they stop (don't sinch them right down just till they lightly seat and stop) -screw them back out 1.5 turns each and start from there
other than that, could be a stuck float or possibly could it be that you still have the old phenolic foam float in the carb? when they get old they like to soak up fuel and sink to the bottom of the bowl
I'm not really a carb guy, hopefully someone like dm440 can help ya out if its any deeper than that.
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dm440c
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Post by dm440c on Apr 27, 2015 15:57:43 GMT -5
- looking down the carb throat with the engine off, work the throttle. Do you see good clear streams of fuel from the squirters?
- if it needs choke to idle, it is telling you it is way lean. Back the idle speed adjustment (screw that contacts the throttle cable linkage) off until the throttle plate is closed. Then do the idle air bleed adjustments described in the previous post.
- don't assume that the rebuild went 100% according to plan. Try that carb on another engine and try another carb on this engine to isolate the variables.
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Post by sissybamf on Apr 28, 2015 19:40:41 GMT -5
We used a different carb same issue. Redid intake gaskets for gasket leak just in case. Will run on throttlevsecond I stop it to dies. I'm about to roll it off the cliff. Would idle on stock Carter 2bbl but wouldn't run on power. Opposite of issue I'm having now
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Post by klicky96 on Apr 28, 2015 21:40:33 GMT -5
We used a different carb same issue. Redid intake gaskets for gasket leak just in case. Will run on throttlevsecond I stop it to dies. I'm about to roll it off the cliff. Would idle on stock Carter 2bbl but wouldn't run on power. Opposite of issue I'm having now How do those carbs run on another engine. Sounds like the issue are the carbs if you have a completely different issue now. of you can, try them on abother engine to make sure.
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Post by sissybamf on Apr 28, 2015 22:00:32 GMT -5
So I got pissed put the Carter back on. It will idle now but struggles to run under power.Opposite of the Holley. This is rather annoying.
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Post by seventyonehemicuda on Apr 28, 2015 23:07:08 GMT -5
do you have a vacuum leak maybe? didn't get upset and smash the intake with a hammer did ya JJ?
take a can of wd-40 or something like it. even a squirt bottle with gas in it and spray it around the intake manifold seals the carb, seal, the whole area see if you can see it "sucking" anywhere.
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