Another 318 Build... Surprise!

Small Block Mopar Engine

  1. Wayne's World

    Wayne's World My World, My Universe, My Garage

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    Here’s my 318 build.

    Plan is to use most of what I have and as usual it’s a budget build. The goal is a good performing street ride in my 66 Coronet. It’s got 3:23’s , 904 with the A&A low first gear set. Shift kit, 5k governor with the higher shift point 1-2 shift spring. advertised 3k street rod converter. Not looking to tear up the streets but a fun car that’s pretty quick, can run on the highway, has AC and runs on pump gas.
    I have the following parts that I can use:
    302 heads cut .050 to 54 cc, larger 360 valves, port/polish, blended bowls, matched to the intake. PC seals and new springs for the cam. 273 adjustable rockers and custom length pushrods.
    I have a Summit CHRYSLER Summit Racing SUM-K6901 Summit Racing™ Classic Cam and Lifter Kits | Summit Racing Duration 276/288, Lift .441/.441 cam but also considering the Lunati 10200702LK VooDoo 702 stick Duration 262/268, Lift .475/.494
    600 Edelbrock carb and LD4B intake
    Mopar Dist with chrome box recurved and a blaster 2 coil
    I have a complete rebuilt 273 short block that I can sell or use the polished forged crank reworked rods with arp bolts in the 318.
    The 318 would be bored .030, line honed and the deck cleaned. My plan is to use a set of the KBPKB167KTM.030 or another recommend piston and since they are around .015 above the deck use the Fel-Pro 521SD head gaskets.
    I would prefer to run exhaust manifolds to keep with a somewhat stock appearance so looking for recommendations. I have a late model LA series set but they are 2-1/4 pipes and the rest of the exhaust is a 2-1/2 mandril bent system with a cross over so I hate to choke it down. A nice set of 340 ones are out of the budget. Might look at a set of the short style headers if I can’t find a suitable pair of irons.

    So, this is the basis of my plan! Please provide any thoughts or recommended changes. Also, if anyone is near Manchester MD 21102 that’s selling a 318 short block, please let me know.

    Thanks,
    Wayne
     
  2. 318willrun

    318willrun Utube channel 318willrun

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    That build will not require the forged 273 crank. The factory cast 318 crank will take a lot more power than your build will give it.
     
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    • j par

      j par Well-hung Member

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      I've yet to see somebody produce a picture of a broken Factory crank...
       
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      • Wayne's World

        Wayne's World My World, My Universe, My Garage

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        Yes, I agree but I already have it and the rods machined and ready to go. I could sell it with the 273 block assembly and pay for the cast crank and rods to be reworked.
         
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        • 318willrun

          318willrun Utube channel 318willrun

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          Honestly, if you get a good 318 I wouldn't think twice about using the 318 crank, rods, and even (watch out!!) the factory rod bolts. I've been beating on 318's (probably 35+ of them) for about.... 35 years and have yet to have one give way. But, I mean you have them and if you want to use them, they'd work great.
           
        • Dartswinger70

          Dartswinger70 Only thing I ever bought new was a Fender Strat

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          Had a 69Coronet years ago with 318. My thought at the time was "it needs a 383..." :)
           
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          • rumblefish360

            rumblefish360 I have escaped the evil Empire State! FABO Gold Member

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            One question before I tell you to throw that Summit cam as hard as you can into the ocean on a charter fishing boat out on the shelf…..

            What’s is your gear ratio & tire size?


            Take that Summit cam and throw it as far as you can into the ocean on your next deep sea fishing adventure when your out by the shelf. It’ll do you good.
             
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            • j par

              j par Well-hung Member

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              Get a 4-speed with 355 gears and hold third gear to the end of the quarter mile LOL.. he may not lose a crank, but the rod bearing may not like it LOL.. ask me how I know...
               
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              • cudamark

                cudamark FABO Gold Member FABO Gold Member

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                With your intake, carb, and exhaust manifolds, use the smaller of the two cams. The 273 crank may not work with your converter if the crank register doesn't match. You may want to check that before you decide. 904 converters after '67 have a bigger button diameter than the '67 and earlier ones.
                 
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                • dirty white boy

                  dirty white boy 50 yr old Juvenal delinquent

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                  i wouldnt do all that work and spend all that money to help it breath better then cork it up with manifolds or shorty shit headers...dwb
                   
                • Dan the man

                  Dan the man Well-Known Member

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                  With the cylinder heads being milled 0.050", did you have the intake surface of the cylinder head milled as well? For every 0.010" milled from the cylinder head and or the deck surface, .0095" has to be milled off the intake surface of the cylinder head in order to maintain proper port alignment. When you ordered your push rods did you figure in the heads being milled, block decked, thinner head gaskets?
                   
                • gliderider06

                  gliderider06 Well-Known Member

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                  I would not run the Summit cam. There was a show that used that cam on a dyno and it made very little power over a stock 360 cam. 73 up 340/360 manifolds can be found relatively cheap on Ebay or on here. I'm running them in my Duster with TTI head pipes and Summit dual exhaust.
                  I have a brand new. 060 318 that's been balanced and blue printed. Edelbrock heads, rpm intake. Roller rockers, erson cam stc... Only run on the engine stand. I'll sell it complete or keep the top end for myself, and just sell the bottoman end. I'm located in Delaware. PM me if you are interested
                   
                • Wayne's World

                  Wayne's World My World, My Universe, My Garage

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                  The converter was used with the crank.
                   
                • Wayne's World

                  Wayne's World My World, My Universe, My Garage

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                  Yes, everything was done to assure correct fit. This motor was already built but a cam bearing install problem mandated it coming apart so I'm going to add some cubes.
                   
                • Wayne's World

                  Wayne's World My World, My Universe, My Garage

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                  As far as swapping to a 360...
                  My concern with the 360 is using my converter, balance issues or what will I need to do.
                  The lower hose on my radiator is on the DS so I use the 273 water pump. Its a nice stock looking stamped upper aluminum rad and I don't want to buy another one.
                  The big thing is my custom set up for my AC. Will my 273 crank pulley fit the 360 balancer? and will it line up to the water pump? I really don't want to have to redesign the system.
                   
                • rumblefish360

                  rumblefish360 I have escaped the evil Empire State! FABO Gold Member

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                  The pulley will fit the balanced. Possibly one bolt will be off. Slot with a dermal/die grinder
                   
                • cudamark

                  cudamark FABO Gold Member FABO Gold Member

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                  Sounds like you have a small button converter. If you go with a 318 or 360 crank, you'll need a reducer bushing to use your converter. You may also have to do something with balance weights to use a 360, unless you zero balance the bottom end. If you zero balance the 360, you can use your 273 balancer, pulley, timing cover, water pump combo without having to modify anything. A 318 is internally balanced, so, no balance issues there. Your 273 parts will be a bolt-on there too....just add the crank bushing for your converter.
                   
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