Xe285hl cam

Discussion in 'Small Block Mopar Engine' started by Rodsaknockin, Oct 7, 2018.

  1. Rodsaknockin

    Rodsaknockin Well-Known Member

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    Hi are any of you guys running the xe285hl cam? Just wondering what it will sound and run like ?
     
  2. rumblefish360

    rumblefish360 so close yet so far away

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    Like a normal hot rod muscle car on a typical 110 C line.
     
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    • toolmanmike

      toolmanmike FABO Staff Staff Member FABO Gold Member

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      What are you thinking about putting it in?
       
    • brian6pac

      brian6pac Well-Known Member

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      • toolmanmike

        toolmanmike FABO Staff Staff Member FABO Gold Member

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        • brian6pac

          brian6pac Well-Known Member

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          HaHa it's still going to sound the same or very close and like I said it was the first thing that came up, I just wanted to see what would come up. It was better than saying it sounds like this thumpity thump. LOL
           
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          • toolmanmike

            toolmanmike FABO Staff Staff Member FABO Gold Member

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            You put that in a 273 and it will sound like a top fueler. Put it in a 408 and you wish you had one bigger. In a big block it sounds completely different.
             
            Last edited: Oct 7, 2018
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            • 4spdragtop

              4spdragtop FABO Gold Member FABO Gold Member

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            • brian6pac

              brian6pac Well-Known Member

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              I ran a couple 273's back in the days when I was a kid, one had a DC 500 lift 292 dur solid lifter and some nice valve springs, that thing sounded awesome,
              That's when I learned about push rods. LOL
               
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              • Rodsaknockin

                Rodsaknockin Well-Known Member

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                Well plans are to put in a 360 with 107kbs and 63cc eddy heads dougs headers and a 750 double pumper
                 
              • KnuckleDuster

                KnuckleDuster Well-Known Member

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                It sounds like this at 800rpm in a 410" with 1-5/8" headers, Flowmaster 40's and 2-1/2" exhaust.



                And this at about 4500rpm...
                (excuse the poor quality audio and wind noise on my phone.)

                 
                Last edited: Oct 8, 2018
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                • Rodsaknockin

                  Rodsaknockin Well-Known Member

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                  That sounds good I'm still debating weather or not to stroke it.
                   
                • mderoy340

                  mderoy340 Well-Known Member

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                  pick a cam for best power not sound.
                   
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                  • Rodsaknockin

                    Rodsaknockin Well-Known Member

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                    I agree Iam just a little concerned about my compression I think it is going to come out at 11.2 so just looking for a little more cylinder bleed off if I'm thinking right my 360 block is zero decked with kb107and 63cc heads really want to get it right the first time any input on this would be great. I have also been thinking about stroking it and getting different pistons and lower the compression some options for both ways would be appreciated
                     
                  • mderoy340

                    mderoy340 Well-Known Member

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                    0 deck .039 gasket is 10.75
                    high 60 low 70 degree intake closing will run great on pump gas. 240ish @ .050 intake duration
                     
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                    • Rodsaknockin

                      Rodsaknockin Well-Known Member

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                      Thankyou for that
                       
                    • nm9stheham

                      nm9stheham Well-Known Member

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                      Yep, I agree; I get SCR = 10.65, with the same head gasket. DCR end sup around 8.2 for that cam at an ICL of 106. Should be runnable on pump premium; take care in tuning.

                      That is all at sea level.

                      What elevation are you at OP? If up at 3000' then DCR drops over half a point, so you might want to re-think if that is the case, depending on what you want to do with this. What is the planned use of this engine?
                       
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                      • Rodsaknockin

                        Rodsaknockin Well-Known Member

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                        Street car for sure 3:91 rear end and Iam at 2500 feet elevation thanks for the info
                         
                      • Rodsaknockin

                        Rodsaknockin Well-Known Member

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                        I was going to go with the xe274 at first and one machine shop said the xe285 would be a better choice. I really want this thing to run good
                         
                      • nm9stheham

                        nm9stheham Well-Known Member

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                        OK; I corrected my DCR numbers above so re-check. I had put in the wrong duration. That and 2500' elevation puts you at 7.7 effective DCR. So ought to be pretty torquey and take off pretty darned good with that 3.91. I don't think you have too much SCR by any means.
                         
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                        • nm9stheham

                          nm9stheham Well-Known Member

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                          'Run good' is somewhat hard to target..... Run good on the drag strip and run good around corners are 2 different things. I was thinking a 274 or 278 might be better IF you are doing a lot of powering out of corners on back roads. But, I keep forgetting that 3.91 gear....
                           
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                          • Wyrmrider

                            Wyrmrider Well-Known Member

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                            I would not use 750 double pumper on the street if I had to buy the gas
                            that 285 is a big cam for a 360 so it needs the compression you are going for but also gears and converter depending on how and where you are going to drive it you have 3.91 so you should be ok for hot rod use ?converter?
                            IDK about a drive to work daily driver.. it's going to be soft getting going even with the gears
                            If you need crank work and rod work and pistons then a stroker makes sense more torque more driveability
                            top end power is in the heads so no change there- and top end power is overated for a street build- you don't get there very often
                            what rockers? if roller tip price in a B3 kit and then 274 with 1.6 makes sense or go solid lifters like thousands of 273's- works fine
                             
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                            • Rodsaknockin

                              Rodsaknockin Well-Known Member

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                              I'm going to go roller rockers and solid lifters I was going to stick with 1:5 ratio and run a 2500 rpm converter I also have a 670 Holley vacuum secondary's and I have been reading about the efi systems. Maybe that's the way to go idk
                               
                            • mopowers

                              mopowers Well-Known Member

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                              Which 670 Holley do you have? If it's a street avenger, I'd keep it on the shelf. I tried one on my 340 and it ran like crap. For engines with a bit of camshaft, the idle circuits are way too lean on those carbs. You'll have to open up the idle feed restrictors to keep it from bogging down. The 750dp will be a better carb for the motor IMO.
                               
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                              • Rodsaknockin

                                Rodsaknockin Well-Known Member

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                                It is a street avenger I also have a edelbrock can't remember what cfm it is I think it is a 750. I don't really like them as well as a Holley