low compression 468bbc hyd cam or roller?
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 23

Thread:
low compression 468bbc hyd cam or roller?

  1. #1
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default low compression 468bbc hyd cam or roller?

    the lil nordic needs more cam and less impellor, but i can't decide which way to go with it. the boat will be for sale but i wanted to upgrade the valvetrain beforehand to make sure it gets into the 80's on this motor. not sure what someone would rather have in it, the hull has a flat keel so turnin 6500 ain't gonna happen without detonate'n some impellors the solid roller cam set-up i have peaks around 6800, so its alil on the big side for this motor.

    the motor's got flat tops and 049's, 60 over, whatever compression that makes it, i didn't build it so that's all i know bout it.i snagged a single plane dart intake for it, and i think i've found a comp cams extreme marine k-kit that might do better than the solid set-up i have. tell me what yall think , i'm no good picking out lil cams for lil motors. for 329.00 this kit comes with a hyd comp cam, lifters, pushrods,chain set, locks, retainers, springs, lube, and tee shirt,lol:

    Cam Grind Number: 305AH

    Advertised Duration: 305(Intake) & 312(Exhaust)

    Intake Duration @ .050 in. Lift: 253

    Exhaust Duration @ .050 in. Lift: 260

    Valve Lift with 1.7:1 Rocker Arm Ratio: 0.575(Intake) & 0.600(Exhaust)

    Lobe Separation Angle: 110°

    i like the lift, but duration is alil much i would think.i can feel that the springs are dead over 5400rpms currently, so a spring change was in ordered regardless, figured i'd upgrade while i was at it.cut the impellor to a b-cut and throw in a uwr.
    Last edited by IMPATIENT 1; 08-06-2009 at 02:41 PM.

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    desktop dyno cam iterator program and comp camquest both say to run the hyd cam over the solid 1 i have lol, the camquest program actually picked it out as the best match for ther motor, says 540hp at 6k, 514ftlbs at 5k. that's good nuff for a b-cut to turn 6k i would think, phuck it, if it don't i'll spray da biatch

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  4. #3
    Senior Member hotbo's Avatar
    Join Date
    Feb 2008
    Location
    lake Ouachita AR
    Posts
    4,677

    Default

    tom flat tops with 049s,lol!!!thats like 8-1 compression.

    that cam is way to big imo.

    i have used a 282s comp its a solid flat tappet,236-561 110 106 it would work great with your set-up

    okay tom heres the deal,if the 049s are stock 600 lift is going to get you no where.

    8-1 compression with that kinda duration,wow it will be a turd.

    those programs are full of shit,that motor with a better cam and intake,probably more like 450hp if that much.

    b-cut 500hp is 5500.so figure from there.me personally wouldnt waste the money and time for a roller set-up when the rpm range you are going to be in is going to be a waste.as always just my .02.travis

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member hotbo's Avatar
    Join Date
    Feb 2008
    Location
    lake Ouachita AR
    Posts
    4,677

    Default

    tom whats wrong with a herbert hyd.cam

    you can get them very cheap and they work decent.

    i would not get out of the 240s at .050(really the 230s and lift well if the heads are stock, with stock valves hell then your really pissing in the wind,but i wouldnt go near .600 lift stay around the .550 mark or less.

    i like the solid flats.that comp 282s we have ran in several flat top mills with stock to modified heads always done wonderful on low budget builds.

    come on you pussy don't be scared

  7. #5
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    not looking for low end power, i'm ordering the kit i picked out, its the best off the shelf comp cam for this thing to run up to 6k, comes with everything i need, and being hyd it'll be low maintenance

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  8. #6
    Senior Member hotbo's Avatar
    Join Date
    Feb 2008
    Location
    lake Ouachita AR
    Posts
    4,677

    Default

    Quote Originally Posted by IMPATIENT 1 View Post
    not looking for low end power, i'm ordering the kit i picked out, its the best off the shelf comp cam for this thing to run up to 6k, comes with everything i need, and being hyd it'll be low maintenance
    okay whatever you saylow end power hell you wont have anything but a turd

  9. #7
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    Quote Originally Posted by hotbo View Post
    okay whatever you saylow end power hell you wont have anything but a turd
    go to bb on labor day and line up with it, 468 vs 468, i'll even spray it to make things even

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  10. #8
    Senior Member hotbo's Avatar
    Join Date
    Feb 2008
    Location
    lake Ouachita AR
    Posts
    4,677

    Default

    Quote Originally Posted by IMPATIENT 1 View Post
    go to bb on labor day and line up with it, 468 vs 468, i'll even spray it to make things even
    okay ill be there hold your breathi havent raced anyone or anything this year.

    im just trying to make it till the end of the season with smokeyi havent even filled my bottles,just been going out cruizing.

    tom if thats what you want for a cam go for it.imo its to big for all the stock shit you have and wont make peak power in your rpm range thats all i was suggesting.good luck bro.

  11. #9
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    Quote Originally Posted by hotbo View Post
    okay ill be there hold your breathi havent raced anyone or anything this year.

    im just trying to make it till the end of the season with smokeyi havent even filled my bottles,just been going out cruizing.

    tom if thats what you want for a cam go for it.imo its to big for all the stock shit you have and wont make peak power in your rpm range thats all i was suggesting.good luck bro.grn
    i would agree with ya if this motor had large valves, but it don't homie that cam will peak tq at 5k, hp at 6k, the roller set-up is gonna be into the high 6's before it peaks, and this motor ain't balanced

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  12. #10
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    how bout the same k-kit with this cam:

    113 centerline
    240 253 durations
    575 595 lift

    its a nitrous cam, would help with compression

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  13. #11
    Senior Member hotbo's Avatar
    Join Date
    Feb 2008
    Location
    lake Ouachita AR
    Posts
    4,677

    Default

    Quote Originally Posted by IMPATIENT 1 View Post
    how bout the same k-kit with this cam:

    113 centerline
    240 253 durations
    575 595 lift

    its a nitrous cam, would help with compression
    i dont like the 113 but it is better.

    tom no matter what the heads will hold it back and you wont make the power you think.i promise this

    hey pick whatever you want no matter what its better than whats in there.

    tom hope to see you soon.ready to throw done

  14. #12
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    Quote Originally Posted by hotbo View Post
    i dont like the 113 but it is better.

    tom no matter what the heads will hold it back and you wont make the power you think.i promise this

    hey pick whatever you want no matter what its better than whats in there.

    tom hope to see you soon.ready to throw done
    i just want all it has to be making it to the pump that 113 killed topend power on camquest, the 110 i listed 1st makes more over 5krpms. and peaks tq at 5k, the 113 peaks wayyyyyy down low(like 3k) and peaks hp at 5k
    i'm gonna let the dd cam iterator run all weekend and see what it comes up with after 40hrs or so then maybe i'll have dougherbert grind it, did that with steve's bbf in his sj and it sure runs good for a low compression bit. the iterator ran for 24hrs before it picked out his cam.

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  15. #13
    Senior Member cheyenne580's Avatar
    Join Date
    Dec 2007
    Posts
    434

    Default

    You HAVE A PM IMPATIENT1!!!!

  16. #14
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    Quote Originally Posted by cheyenne580 View Post
    You HAVE A PM IMPATIENT1!!!!
    dude, ya don't know how much i appreciate it! thanx again

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95