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| 4 BBL. set up https://slantsix.org/forum/viewtopic.php?t=41521 |
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| Author: | ducenaquarter [ Thu Aug 19, 2010 5:19 pm ] |
| Post subject: | 4 BBL. set up |
Im kind of new to this thing, and i was wondering, if i put an offy 4 bbl carb intake and a edelbrock 500 cfm carb. Is there anything else i need to change besides the linkage? is there any other engine modifications that need to be done? Thank you |
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| Author: | wjajr [ Thu Aug 19, 2010 6:17 pm ] |
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Ducenaquarter, Welcome to the board. Could you describe your car to us, year, make, engine, transmission, etc., and any modifications that may have been made so we can better guide you. Now to your question: Quote: if i put an offy 4 bbl carb intake and a edelbrock 500 cfm carb. Is there anything else i need to change besides the linkage?
Short answer: yes.To be able to take advantage of that almost too big carburetor, One should increase compression, install oversized valves, do a little porting, fit headers or Dutra Duals, install a larger exhaust system, add electronic ignition if not all ready equipped, distributor re-curve, and perhaps a non stock cam shaft. Once all the above is done, perhaps a higher stall converter, and shorter gears in the rear end. Before any engine mods are done, one should get the chasses up to snuff first: brakes, suspension, and front end should be well sorted before adding more power. A 500 cfm 4v is way too big for a stock engine, a Super Six set up would be a much more efficient use of your money. What one should be doing is asking them selves what they expect from his car: Stocker daily driver; street / strip weekend toy; full out race car; or something in between there somewhere. Once you decide what you want your car to do, we can better guide your build. Also take advantage of the search button to research any questions you may have, and take a look-see at the articles page when you first open /6 up there is a ton of good information to digest. Bill |
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| Author: | ducenaquarter [ Thu Aug 19, 2010 6:34 pm ] |
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Thank you so much Bill i appreciate it. I have a 1973 Plymouth duster its mostly stock, including the 225 slant six thats in it. I put a flow master 40 on it, re-wired everything, and disk breaks on the front, other than that things are pretty much stock. Im 17, and its my first car, and daily driver. 
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| Author: | wjajr [ Thu Aug 19, 2010 7:04 pm ] |
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Garrett, Disc brakes are a good starting point to get your Duster to perform better, and repairing your wiring is just as important to having a dependable car, that the Fire Gods will not be looking down on, to work their evil on… I always recommend that one install a little green knob switch that will disconnect the negative battery terminal on their old cars. You can find one for about eight bucks at Wal-Mart near the battery display. I have them installed on my old stuff, and additionally they make working on the car easier, as so many repairs require the battery to be disconnected first. Speaking of repairs, as soon as possible, purchase a copy of the “Factory Service Manual†for your car, it will be one of the best investments you can make for your tool box. This is the manual Chrysler used in their service department back in the day, the only manual worth owning, as it covers everything. These manuals are available on line from several different venders printed in book form, or on a disk. Personally I prefer the book format because you don’t have to plug it in, is easer to use under the hood or on the work bench. Also books don’t go become obsolete like most digital recording media seems to do every few years. Bill |
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| Author: | ducenaquarter [ Thu Aug 19, 2010 7:27 pm ] |
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Thanks bill for the reply, and the warm welcome. I will pick the service manual up asap on ebay. I appreciate the advice you gave me, and i will definitely go to you for more advice! |
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| Author: | olafla [ Fri Aug 20, 2010 12:14 pm ] |
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Welcome to the forum, ducenaquarter, exellent choice for a first car! You'll find an incredible amount of advice and information here, learn to use the search function and you will always find some info on a subject, there are more than 100.000 posts in the engine section alone. The article section and the FAQ's at the start of each section are great sources to start with. Many of us use our cars as daily drivers, and regular maintenance and small improvements all the time will just make the cars better. Olaf. |
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| Author: | 64'4$peed [ Fri Aug 20, 2010 2:59 pm ] |
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I second the super six 2bbl as opposed to the 4bbl on a stock motor. unless you put a bunch of money into the head it wont do you much good. but a 2bbl is a huge improvement over a stock carb. id also recomend converting to the HEI ignition. |
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| Author: | ducenaquarter [ Sat Aug 21, 2010 5:11 pm ] |
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Thanks everyone for your advice it really helped out! |
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| Author: | kesteb [ Sat Aug 21, 2010 9:26 pm ] |
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Food for thought, 1) The Edelbrock 500 4v has very small primary bores. They are about the same size as the BBD's. 2) The Edelbrock secondaries flapper door wont' open unless there is sufficient air flow thru the carburetor. 3) They are designed for today fuels. 4) They are new, not worn out, 40 year old carburetors. 5) You can actually buy jets and metering rods to tune the carburetor, along with a nice manual to guide you. 6) If you ever decide to go further in engine modifications, you won't have to buy another carburetor and manifold. So, for the most part, a Edelbrock 4v, will be a 2v with benefits. |
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