Blown 489 BB Chev
+ Reply to Thread
Page 1 of 18 1 2 3 4 11 ... LastLast
Results 1 to 14 of 245

Thread:
Blown 489 BB Chev

  1. #1
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default Blown 489 BB Chev

    Finally going to take the time to post some pics on the blown 489 I'm building.
    The engine is as folows:
    Mk IV BB Chev, four bolt, + .030
    Eagle 4.25 forged crank
    Probe 6.385 H beam rods
    Probe SRS forged flat tops w/ JE rings
    Clevite H series bearings
    Rollmaster timing set
    Romac Balancer w/dual keyways
    Custom hyd roller, Morel lifters
    Stefs aluminum pan, Melling pump (supplied w/the pan)
    Canfield 310 heads w/ severe duty valves, hyd roller springs and Ti retainers,
    Crane gold rockers and Canfield stud girdle. Heads were done here in my shop...they came with guides and seats unfinished. 5 angle intake valve job, radiused ex, bowls blended, chambers CNC'd by Canfield. Heads flowed in the 360/290 range @ .800. Decent for a simple bowl blend. Ports were untouched.
    Blower is a BDS 871 package w/ (2) 850 Holleys prepped by AED. We'll see how that goes.
    Ignition will be MSD small dia. dist w/ Crane HiFire 6 w/ rev limiter.

    Block prep...remove all the casting flash and blend all sharp edges. Normally I do this before machining. Block was fully machined on a CNC and the final bores were honed on a new Rottler hone. Mains were also aligned. Everything on the block checked dead nuts.

    Before:



    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    after:




    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  4. #3
    I'm No Expert Shaun's Avatar
    Join Date
    Feb 2008
    Location
    San Clemente, Ca
    Posts
    3,138

    Default

    Wahoo, finally another build thread.!! Aparently me and steel are the only ones who like to post out builds (in my case build)

    Scott, looking forward to seeing every detail!

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Banned
    Join Date
    Jan 2008
    Location
    El Cajon, CA.
    Posts
    3,605

    Default

    Quote Originally Posted by Shaun View Post
    ... Scott, looking forward to seeing every detail!
    X2. What work was done where the oil filter adaptor goes and why? Thanks.

  7. #5
    I'm No Expert Shaun's Avatar
    Join Date
    Feb 2008
    Location
    San Clemente, Ca
    Posts
    3,138

    Default

    Quote Originally Posted by hotrod56cars View Post
    X2. What work was done where the oil filter adaptor goes and why? Thanks.
    He was removing casting flash and blending sharp area's, my guess here is that he did the same for a couple reasons... Better flow, less hp required by the pump (increase probably so small it wouldnt even matter) but more importantly my guess is that removing the shape edges from this areas reduces the risk of having one of those peices break off and run a muck in the engine! Just my guess, i'm no expert!

  8. #6
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    After a thorough cleaning with solvent and then hot soapy water I was ready to set the crank and check the thrust. Mind you by this time, I've gone through two different sets of main and rod bearings to get my clearances. The Eagle crank wasn't very consistant from journal to journal, but I finaly settled on what I had.





    The cam is next. This is a Bullet steel roller with an iron gear.

    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  9. #7
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    Quote Originally Posted by hotrod56cars View Post
    X2. What work was done where the oil filter adaptor goes and why? Thanks.
    I blend all the sharp edges in the oil passages and try and help the flow in the direction it's going. Just helps the oil flow easier, helps keep oil temp down, just makes a happier engine.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  10. #8
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    NOrmally I do all the mockup and measuring before the final assembly, but in this case, I assembled as I went. Since this is a relatively mild longblock, I didn't anticipate any problems. Of course, that usually bites you in the ass. We'll see.

    Here I stick a piston in the hole and check the deck height. I do this with no rings.



    Then I degree the cam at the lifter. I needed to make a 2* adjustment here to get the intake c/l at 112*. It actually ended up at 113.5, but with a little chain stretch, it'll be closer to 112.

    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  11. #9
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    Quote Originally Posted by Shaun View Post
    He was removing casting flash and blending sharp area's, my guess here is that he did the same for a couple reasons... Better flow, less hp required by the pump (increase probably so small it wouldnt even matter) but more importantly my guess is that removing the shape edges from this areas reduces the risk of having one of those peices break off and run a muck in the engine! Just my guess, i'm no expert!
    All good reasons.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  12. #10
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    At this point, the rings have been gapped, I've done a liquid measure on the piston dome (sorry I didn't get pics of that) and I've assembled the rack of pistons. Once I'm convinced everything is ready to go together, it's time to paint.





    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  13. #11
    Senior Member NiceGuyEddie's Avatar
    Join Date
    Dec 2007
    Location
    Anaheim Hills
    Posts
    5,838

    Default

    Thanks for sharing this build!

    What kind of paint did you use?

  14. #12
    Cantard 71hallett's Avatar
    Join Date
    Mar 2008
    Location
    snow bank
    Posts
    5,017

    Default

    Quote Originally Posted by rIVERtRASH View Post
    Thanks for sharing this build!

    What kind of paint did you use?
    And who used it for you?
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

  15. #13
    Cantard 71hallett's Avatar
    Join Date
    Mar 2008
    Location
    snow bank
    Posts
    5,017

    Default

    Hey Steel, whats your take on the ring location on these? I cant say I like them much on an a/n deal....maybe its just the srp pistons I shouldnt like...?
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster

  16. #14
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    What kind of paint did you use?
    Just NAPA spraycan gloss black engine paint. It got a couple coats of SEM Prime first.

    And who used it for you?
    Ouch...that wasn't nice.

    Hey Steel, whats your take on the ring location on these? I cant say I like them much on an a/n deal....maybe its just the srp pistons I shouldnt like...?
    Some guys really don't like these pistons, but I didn't see anything terrible, just not an expensive piston. Rings were far down enoug to not worry me. Expansion groove between top and second ring.
    JE makes the SRP, these are Probe SRS...the SRP's are definitely a nicer piston, but more expensive.

    I'll have more pics later today.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

+ Reply to Thread
Page 1 of 18 1 2 3 4 11 ... 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

Tags for this Thread

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