Bottom End Shocker Build

Small Block Mopar Engine

  1. rumblefish360

    rumblefish360 Getting closer FABO Gold Member

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    That’s the thing with our northern neighbors. There government slams them with a crap ton of tax when stuff crosses there boarders.
     
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    • 67autocross

      67autocross A new iron curtain drawn across the 49th parallel

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      I looked on the Promaxx site and they cost $2200 US dollars for the CNC 185 heads for a pair…so that’s $2750 Canadian plus shipping and tax …so around $3000 Canadian…
       
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      • Mean416

        Mean416 Well-Known Member

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        Would a hyd roller cam not help gain more efficient use of the head flow for lower rpm torque production?

        In the dual plane vs. single plane I agree the dual is the way to go.
         
      • 67autocross

        67autocross A new iron curtain drawn across the 49th parallel

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        I have zero interest in any type of retrofit roller setups rather do a solid mechanical….I don’t trust them
         
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        • rumblefish360

          rumblefish360 Getting closer FABO Gold Member

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          I’m looking at the cam specs and timing events to help decide if it suites rather than if it is a Hyd. or Solid which have there own Characteristics and features that you may wish to consider for their use or not.
           
        • 67autocross

          67autocross A new iron curtain drawn across the 49th parallel

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          I have asked all over town and still no air gap to be found…
           
        • rumblefish360

          rumblefish360 Getting closer FABO Gold Member

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        • 67autocross

          67autocross A new iron curtain drawn across the 49th parallel

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        • 512Stroker

          512Stroker We are all here because we are not all there.

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          There is a small speed shop close to me that had one on the shelf back in the spring. I will call over there tomorrow see if it is still there.
          Stay tuned
           
        • 67autocross

          67autocross A new iron curtain drawn across the 49th parallel

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          Tanks Bra!!!
           
        • Mean416

          Mean416 Well-Known Member

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          Dang. Maybe I should sell mine.
           
        • Mean416

          Mean416 Well-Known Member

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          Out of curiosity, why don't you trust them? To each his own, I'm just curious.

          Also since the intention is to make max low end, any consideration for offset grinding the 4" to get longer stroke? That would definitely pump up the torque.
           
        • 67autocross

          67autocross A new iron curtain drawn across the 49th parallel

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          I’m thinking that the 4 inch crank is likely even too much for the head flow I will end up at…plus it would probably just cost less to purchase a 4.25 crank if I was going that route
           
        • Mean416

          Mean416 Well-Known Member

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          I guess I have just been stuck on this quote from you: " I want the bottom end torque of a big block and peak power at 5500rpm…"

          At that rpm head flow isn't going to be a problem. At bottom end of rpm range a 4.25 will definitely be badass. I didn't know it was available off the shelf. A 4.25 stroke with a 4.060 bore will actually be a 440 :)
           
        • Jadaharabi

          Jadaharabi FABO Gold Member FABO Gold Member

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          .
          Hughes 435 kit bored to 4.1 = 440

          Hughes Engines
           
        • Mean416

          Mean416 Well-Known Member

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          Heck yeah! That's a good route there!
           
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          • 67autocross

            67autocross A new iron curtain drawn across the 49th parallel

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            I would do to a bigger stroke if I didn’t already have the new 4 inch scat crank already….
             
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            • Josh owen

              Josh owen Well-Known Member

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              I also acquired a complete 72' 340 minus intake for $125 from craigslist this summer. Not everyone wants to line there pockets some people just wanna keep the hobby alive and just wanna move stuff out of there way, I had it bored. .060 for $20 a hole, line bored for $150 new cam bearings for $20 and whole thing hot tanked ready for assembly for another $150. Deals are out there
               
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              • 67autocross

                67autocross A new iron curtain drawn across the 49th parallel

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                Okay…I drove out to the head porting guys place tonight and dropped off the pro maxx heads…he has some amazing equipment including a really nice SF450 bench with a bunch of add ons…the bench has extra motors for flowing really high flowing heads…he uses David Vizards head software.
                I asked him to flow the heads stock and see how they compare to the advertised numbers…
                 
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                • Krooser

                  Krooser Reform School Graduate

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                  Few engines need a line hone much less a line bore. I line bored many engines but the guys that do my stuff today tell me if the crank is easy to turn in the block its a waste of $$$.
                   
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                  • pittsburghracer

                    pittsburghracer FABO Gold Member FABO Gold Member

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                    Plus it raises issues of having a sloppier timing chain. I’ve had one engine line bored and that was a big block I put 440source main caps on. Zero blocks line honed except probably technically the same block.
                     
                  • 67autocross

                    67autocross A new iron curtain drawn across the 49th parallel

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                    Well the block came with no caps so I'm assuming with aftermarket caps and studs I'm figuring a line bore into the build...the last few small blocks I have used the magnum timing chain tensioners setups with good results
                     
                  • pittsburghracer

                    pittsburghracer FABO Gold Member FABO Gold Member

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                    Yep new caps you are thinking right. I’ve never used the tensioners and never felt the need to do so and I’ve heard of issues with them. I can’t afford issues so I invest in good gears and chains. I have 3-4 (360) blocks that I bought off a younger guy that though it was a good idea to throw all the main caps in a box, the same box. That will take me a long weekend probably getting them all matched up. I have a name for guys like that.
                     
                  • rumblefish360

                    rumblefish360 Getting closer FABO Gold Member

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                    Idiot comes to mind……
                     
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                    • pittsburghracer

                      pittsburghracer FABO Gold Member FABO Gold Member

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                      Exactly. Thanks.
                       
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