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From the lens Mopar 273 Small Block.

  • nick g May 23, 2012 @ 11:55 am | delete
    Ok I have a 273 2 barrel on my 67 dart I want to go up to a four.barrel and have had a time finding the.intake manifold if I buy an original 67 4 barrel intake will it fit right on the block no problem?
  • Vik Nov 11, 2011 @ 11:25 pm | delete
    My 68 dodge Coronet 500 runs a LA 273 engine, so far the best ride car I ever had,
    very enjoyable car to ride,smooth and fun driver,not to mention very reliable engine.
    Long live for the 273 dodge engine if you have one keep it.
    if i want a loud ride I just take out my 71 b body 440
  • c lehenky Nov 7, 2011 @ 9:25 pm | delete
    a great carb option is a rochester 375...right off a old pontiac...you'll almost think you have a 4barrel. this is an old hot rodders swap that i have seen a few times and was always impressed. it will also help with the commen cold natured aspect of start ups
  • AndyPo Sep 26, 2010 @ 4:52 am | delete
    Excellent lens. Very interesting. I wish I had more time to work on my cars' engines.
  • rms Sep 17, 2010 @ 7:22 am | delete
    Great info!
  • toolmanmike Sep 10, 2010 @ 9:54 pm | delete
    Just an update. My HP 273 is in and burnin' gas. It runs good with just a few hundred break in miles ion it. I am fighting carb problems. The original carb has sloppy throttle shafts and is causing vacuum leaks. Otherwise it runs pretty strong. Mike Weidner Here's a link to my build. http://www.forabodiesonly.com/mopar/showthread.php?t=94343
  • dave Sep 8, 2010 @ 12:42 pm | delete
    offenhauser makes 360* 4 barrel intakes dual plane and most of the non egr inakes will fit with a touch of work i have a 300hp 273 in my dodge truck they will spin up pretty hi and they sound good and pull pretty hard with a decient cam i cant remember what cam i have in mine i think it is a isky the motor is out of a 65' dart has minor port work 30 over and the later modle truck rods for more strength and biger rod bolts the 273 also came stock with adjustable valve train they run cooler and have thicker cylinder walls i pull mine to almost 7 grand alot it is a good motor and is diffrent everybody kind of gives me a look when i tell them i have a 273 instead of a 318 or 360. also check paw and cambell enterprises they have alot of nice mopar stuff also try enginekits.com for pistons and as always wiesco will make a piston for anything a resonable price but unless your boosting of spraying your engine cast piston will do just fine. im glad to see other people running 273's hope yall have good luck with yours
  • Kayla Jul 8, 2010 @ 5:11 pm | delete
    Hey, thanks for all the info. You mentioned it's difficult to find an aftermarket intake manifold for the 273, but do you know any place where i could get one? the parts for the water hose are thrashed and can't be removed (trust me i've tried).
  • toolmanmike Sep 10, 2010 @ 9:46 pm | delete
    Offenhauser has 64-65 4-barrel intakes. Otherwise look on e-bay or hang around forabodiesonly.com and ask if anyone has one. They surface from time to time. toolmanmike
  • dabpuschridge@comcast.net Mar 23, 2010 @ 11:10 pm | delete
    I have a 66 f/s , 4 spd baracuda 273, some one has put a egr 4bl manifold on. I understand there is a way to drill the intake to fit the heads, if this is true whats the trick, thanks DB
  • toolmanmike Mar 24, 2010 @ 7:46 pm | delete
    The egr manifold is obvilously a late model unit. It doesn't really belong on a 66-273. You need a factory 66 -69 273 intake or an old Edelbrock LD4B. No redrilling is necessary unless you're trying to fit a 64-64 273 intake on 66 and newer heads. Mike
  • Mike Weidner Feb 12, 2010 @ 2:10 pm | delete
    glockr I want to correct my post. The E-4 cam is a 260 duration and .425 lift. The Egge pistons are really nice pieces. My machinist was impressed with the quality and consistency. (they were all within .0003 of the same size and very close weight-wise when he balanced them) Mike
  • glockr Feb 14, 2010 @ 4:34 pm | delete
    Hi Mike, thanks for the update and the info on the Egge pistons. I've decided to get a set as soon as I sell some of my Slant Six stuff. Did you get the 9:1 or the 10.5:1 pistons?
  • Mike Weidner Feb 14, 2010 @ 5:23 pm | delete
    I got the 10.5/1 pistons. I didn't have any ping problems before and hope with ported heads and a fresh rebuild that won't be an issue. I can always use a thicker head gasket if needed. Mike
  • Mike Weidner Feb 8, 2010 @ 10:36 am | delete
    I too am rebuilding/restoring the 273 in my 66 Dart this winter. It is a HP motor and I worked to keep as close to stock as possible. The block got a +.030 bore and Egge Machine has both low and high compression pistons. I got the 10.5/1 pop-ups like the originals. I ordered a Isky E-4 cam. It's a solid lifter cam with .260 lift and 425 duration.
    (real close to the stock HP cam) The crank got a .010/.010 turn and the whole thing got balanced. The Egge pistons and pins are lighter than the stockers so a balance was necessary. Most of the short block work has been done and next comes the heads. I have a shop nearby that specializes in Mopar cylinder heads. I will have them go through my heads and port match and bowl blend. They will probably install stainless valves and set them up with new springs. I am going to use the original intake and AFB carb and also the original dual point distributor. My desktop dyno program figured 322 Hp @ 5000 rpm.
    I will be happy if I get over 300 and I would like to dyno it if possible. Mike
  • glockr Feb 8, 2010 @ 1:03 pm | delete
    Hi Mike, thanks for the info on the Egge pistons. I'd looked on their web site last summer and couldn't find the 273 pistons. I went back today and downloaded their latest catalog and sure enough they have them listed. Managed to find them on the web site too. Just might have to get a set. Now I'm glad I held onto my 273.
  • BGriz Feb 7, 2010 @ 1:11 am | delete
    glockr,
    I am restoring a 65 Dart GT w/ 273 as a daily driver. I also prefer good mileage and smooth idle. My cam was worn so changed to 0.422/0.444 hydraulic. A little worried too much lift since more than HiPo, but claims "RV/Torque". I now see Rhoades "variable lifters" ($116) that give less lift at low rpm, similar idea to variable valve timing. What do you think? I may try later. I have a Holley Projection w/ O2 feedback and Crane XR700 ignition. It wasn't hard to counter-sink the holes on a later Edlebrock 4-barrel intake to fit. I'll post mileage once I'm driving.

    This is my first small block. I have a Newport w/ 383. I also like the slant 6. I had a 69 Dart 225 for 18 yrs until stolen. Those are sleeper slants on youtube, mostly turboed & some even inter-cooled. A straight six is perfect for turboing. Maybe I'll try that on a slant if I ever get play time. I have a small turbo from a Mercedes diesel.
  • michael Jan 14, 2010 @ 9:52 pm | delete
    glockr....I haven't fired up my 273 yet so I can't say how my 64 cuda will perform but I can share a couple of things I did...new cam pistons rockers lifters intake and soon exshaust....but the big thing was I put on a set of 318 heads.....bigger valves so it can breath better but even better....less volume then 273 stock heads....with the cam durtation figured in, the math says about 9.5/1 compression......give it enough gas and it should spank that cuda....
  • glockr Jan 15, 2010 @ 10:56 pm | delete
    Hi Michael,
    Where did you get your pistons and what cam are you running? When you get your 64 going hope you'll post on how it runs. I really like the early Barracudas and Valiants.
  • glockr Jul 13, 2009 @ 4:59 pm | delete
    Hi Steve,
    Any 360 you find will need some work done if you want to go racing. You don't necessarily need to spend a lot of money. If you read car magazines (esp Mopar-oriented mags) you'll see a fair number of fancy cars with wheel tubs, cages, pimped up engines with big carbs and fender-well headers, etc that only manage to run high 12's in the 1/4 mile. In 2003 (I think) Car Craft put together a budget built 360, stuck it in a 68 Barracuda, and ran 11.70's with it. The important thing is how well your combo works together, not how much money you spend. If I can find the link to the Car Craft article I'll post it here.
  • steve Jul 11, 2009 @ 11:38 am | in reply to glockr | delete
    I've come across a running 360 with a 727 transmission, but it is out of an RV or camper. I'm not sure if this is a good fit (meaning) would I have to replace all the internal parts to get lots of horespower, or do I stay with low end torque, or is this the wrong block to work
    with ?
    My main objective is to go racing. With the odd drive to the car shows in town.

    Also. How well does an AMC Dana 20 rear end bolt up to the driveshaft / tranny in my Dart
    Are there many modifications ? If I'm not mistaken, the width differnce is about a 1/2 inch.

    Thanks for your input.

    Steve
  • glockr Jun 28, 2009 @ 10:41 pm | in reply to Steve | delete
    Your biggest challenge with rebuilding the 273 is going to be finding pistons. If you want to go as fast as possible for the least dollars, a 360 is what you want. Pretty easy to get 450 HP out of a 360 and the core is a lot cheaper than a set of 273 pistons. A built 904 will handle the power OK (it's better than a 727 for racing IMHO), you're right about needing to replace the 7.25 rear end. If you do decide to rebuild the 273... let the rest of us know where you found affordable, quality pistons.

    Cheers,
    glockr
  • Steve Jun 24, 2009 @ 8:14 pm | delete
    I have just purchased a 1968 Dodge Dart out of California, with a 273 ci motor, with the smallest of small transmissions (904) and rear ends (7.25).
    My initial craving was to produce a Hemi looking Dart. Without the high cost of a Hemi.
    Of course I've been searching high and low to replace the complete drive line with a more aggressive small block set-up. But with the recession in full swing, I've been contemplating a expensive build-up with the 273 & 904. Only major change is the rear end. Not much information out there with this build up.
    The limited edition Dart with 275 HP would suit me fine for now. If there are any 273 mopar finatics out there, I would greatly appreciate your imputs.
  • dave Sep 8, 2010 @ 12:54 pm | delete
    u can also swap on late model magnum heads it pretty easy u have to swap out lifters and pushrods and head gaskets but u get 160-190cc runners depending if rt's or just magnums and 60 cc chambers and alot better valve covers and valve train and with the new gas u can run a little more compression and more fuel and if u run a carter/edlbrock u should put a phernolic spacer to help against hydrolocking cuz this ethenal gas is a nightmere on the old stuff and remember if your running pre 74 heads the werwe designed for leaded gas and u need to install hardend seats or they can get beat up and come out of the pocket and trash a good motor quick

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glockr

The Mopar 273 makes a good street engine, especially if you're trying to keep your car original or your goal is fuel economy. I got my 273 'cause that's... more »

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