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Thread: Stroker

  1. #1
    Join Date
    Sep 2004
    Posts
    410

    Default Stroker

    What are you guys using to stroke you BBB, what crank, rods pistons ext. also how many cubes dose it make it, I understand if you dont want to share you combo, I was just looking around today and every thing seemed really pricey, even for a buick so I was just wondring if you have and combo that are good, thanks Gary

  2. #2
    Join Date
    Feb 2002
    Location
    Medina,Ohio
    Posts
    2,039

    Default Re: Stroker

    My Block is bored to 4.350
    My Crank is a custom billet from Moldex w/ 4.25 stroke
    This makes 505ci.
    Rods are Aluminum GRP 6.80 long and Custom Venolia pistons.
    Gary Kubisch
    '70 Skylark STG 2
    9.40's at 141+ all motor at 3370lbs
    ALL IN GOOD TASTE

  3. #3
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    Feb 2002
    Location
    chardon,ohio
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    4,533

    Default Re: Stroker

    Quote Originally Posted by skylarkman13 View Post
    What are you guys using to stroke you BBB, what crank, rods pistons ext. also how many cubes dose it make it, I understand if you dont want to share you combo, I was just looking around today and every thing seemed really pricey, even for a buick so I was just wondring if you have and combo that are good, thanks Gary
    525 w/moldex 1/2 stroker
    494 w/stock crank offset ground to chevy sb rod small lournal
    482 w/stock crank offset ground to chevy sb rod large journal
    470 w/stock crank offset ground to chevy bb rod

    we have them all and in a light car I think I like the 482 with 6.8" al rods best.
    a heavy car ,like 3400+, I like the big moldex with al rods
    I run the 494 in Scat w/ steel rods but it would be just as quick with the 482 and the rod journals are fatter for more strength
    gary
    gary
    Iron Stage 2
    GSCA #51
    BPG #1135
    To grow old is mandatory,
    To grow up is optional.
    "CARPE DIEM"

    69 GS400 4 speed documented Stage2,original owner,18k miles
    68 GS400 Stage2 race car "Great Scat" 9.94 best et
    69 GS400 4 speed convertible
    70 Q-Q GSX ( actually Sandy's) pure stock trim,12.78 best et
    70 Race car, "Thumper"resurrected 9.88 et so far.
    71 GS 455 10 second street car, triple black

  4. #4
    Join Date
    Sep 2004
    Posts
    410

    Default Re: Stroker

    Thanks for your info. I heard that Moldex is not to easy to deal with, also how much do they hit you for a crank. I should have also mentioned that I want to run steel rods and not alum. No much street driving for that, Thanks again, Gary

  5. #5
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    Feb 2002
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    NYC
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    Default Re: Stroker

    I wonder why they offer these with a SB Chevy rod journal and not BBC?Isnt small block rod journal too small?

    Thanks
    George



    "If ur going to beat a Hemi you better have a Buick"

  6. #6
    Join Date
    Feb 2004
    Location
    Haines City,FL
    Posts
    120

    Default Re: Stroker

    I had a 523" built by AM&P. It is for the street,a pumpgas engine (compression 10.4:1). I used a Moldex 4.4 strok crank and went .038 over bore. We used Eagle steel 7.1 rods(Chevy), with JE pistons. I haven't finished the car yet,but it made very good numbers on the dyno.The engine is on AM&P's website under dynoed engines. Mike Nussell

  7. #7
    Join Date
    Feb 2002
    Location
    Medina,Ohio
    Posts
    2,039

    Default Re: Stroker

    Quote Originally Posted by skylarkman13 View Post
    Thanks for your info. I heard that Moldex is not to easy to deal with, also how much do they hit you for a crank. I should have also mentioned that I want to run steel rods and not alum. No much street driving for that, Thanks again, Gary

    I believe they are now around $3k.
    You just have to allow alot of lead time,Or contact TA Perf.
    They have been known to stock a few Billet Cranks.
    Steel rods are no problem,Just a different application.

    What are your plans?
    Racecar?Street/Strip?
    Gary Kubisch
    '70 Skylark STG 2
    9.40's at 141+ all motor at 3370lbs
    ALL IN GOOD TASTE

  8. #8
    Join Date
    Feb 2002
    Location
    chardon,ohio
    Posts
    4,533

    Default Re: Stroker

    Quote Originally Posted by staged67gspwr View Post
    I wonder why they offer these with a SB Chevy rod journal and not BBC?Isnt small block rod journal too small?

    Thanks
    George
    the csb rod journal is only 2" there fore you get a 1/4" stroke,the cbb rod journal is larger giving only a small stroke increase,yes 1/4" stroke may make the stock bbb crank too weak with a 2" rod journal,but I haven't had any problems relating to this.Others have some concern.Thats why I think the csb large end journal may make more sense since it leaves the bbb crank bigger and still yields 482 inches.
    gary
    gary
    Iron Stage 2
    GSCA #51
    BPG #1135
    To grow old is mandatory,
    To grow up is optional.
    "CARPE DIEM"

    69 GS400 4 speed documented Stage2,original owner,18k miles
    68 GS400 Stage2 race car "Great Scat" 9.94 best et
    69 GS400 4 speed convertible
    70 Q-Q GSX ( actually Sandy's) pure stock trim,12.78 best et
    70 Race car, "Thumper"resurrected 9.88 et so far.
    71 GS 455 10 second street car, triple black

  9. #9
    Join Date
    Feb 2002
    Location
    NYC
    Posts
    5,797

    Default Re: Stroker

    Quote Originally Posted by greatscat View Post
    George
    the csb rod journal is only 2" there fore you get a 1/4" stroke,the cbb rod journal is larger giving only a small stroke increase,yes 1/4" stroke may make the stock bbb crank too weak with a 2" rod journal,but I haven't had any problems relating to this.Others have some concern.Thats why I think the csb large end journal may make more sense since it leaves the bbb crank bigger and still yields 482 inches.
    gary

    Ok now i understand it i was alittle concerned when someone told me about the small rod journals thanks for the info.
    George



    "If ur going to beat a Hemi you better have a Buick"

  10. #10
    Join Date
    Sep 2004
    Posts
    410

    Default Re: Stroker

    Mine would be a street peeler, that would find its way to the track from time to time. I would like to use the stock crank, but if you do that it looks like your looking at custom rods, if you offset grind the crank is there any rods that will go in it, or is it going to have to be custom made?

  11. #11
    Join Date
    Jul 2004
    Location
    Central New York
    Posts
    1,859

    Default Re: Stroker

    Quote Originally Posted by greatscat View Post
    yes 1/4" stroke may make the stock bbb crank too weak with a 2" rod journal,but I haven't had any problems relating to this.Others have some concern.

    Has anyone actually had a problem with a 2" rod journal?
    Bob

    '72 GS350 convertible, 455, "TORQUED" 11.37 @117, 1.57
    '70 GSX Tribute 9.51 @140+, 1.33, 3650 lbs race weight, factory iron block, 1 carb, full exhaust, no power adders
    '87 GN 59K original owner

    http://www.youtube.com/watch?v=hyXRjiO-oFE

  12. #12
    Join Date
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    Medina,Ohio
    Posts
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    Default Re: Stroker

    Quote Originally Posted by TORQUED455 View Post
    Has anyone actually had a problem with a 2" rod journal?
    No more so than a 2.250,Using the Stock Crank has it's risks.
    But,There are many guys running 494's for years now.
    If done right the smaller Journal could theoretically end up stronger,You can get a really nice radius on the journal when it's turned.
    I would guess that many failures w/ Stock Cranks happen when something else goes wrong.
    That said,Billet/Aftermarket will always stand up to more power/abuse than the Stock piece.
    Gary Kubisch
    '70 Skylark STG 2
    9.40's at 141+ all motor at 3370lbs
    ALL IN GOOD TASTE

  13. #13
    Join Date
    Jul 2004
    Location
    Central New York
    Posts
    1,859

    Default Re: Stroker

    Quote Originally Posted by GS Kubisch View Post
    You can get a really nice radius on the journal when it's turned.
    It always seems like me asking the stupid questions -- what does this mean?
    Bob

    '72 GS350 convertible, 455, "TORQUED" 11.37 @117, 1.57
    '70 GSX Tribute 9.51 @140+, 1.33, 3650 lbs race weight, factory iron block, 1 carb, full exhaust, no power adders
    '87 GN 59K original owner

    http://www.youtube.com/watch?v=hyXRjiO-oFE

  14. #14
    Join Date
    Feb 2002
    Location
    Medina,Ohio
    Posts
    2,039

    Default Re: Stroker

    Not stupid at all.
    Just think of the outside of the rod journals/bearing surface where it transitions to the counterweight.
    From the factory there isn't much radius which is more prone to fatigue/cracking.
    As you offset grind to gain stroke you can also improve strength by leaving a larger radius.
    Gary Kubisch
    '70 Skylark STG 2
    9.40's at 141+ all motor at 3370lbs
    ALL IN GOOD TASTE

  15. #15
    Join Date
    Sep 2004
    Posts
    410

    Default Re: Stroker

    If you offset grind you crank to make it a 494 what rod would you use? Thanks Gary

  16. #16
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    Location
    NYC
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    Default Re: Stroker

    Quote Originally Posted by skylarkman13 View Post
    If you offset grind you crank to make it a 494 what rod would you use? Thanks Gary
    I used TA`s steel Billet rods i think made by Crower.

    Thanks
    George



    "If ur going to beat a Hemi you better have a Buick"

  17. #17
    Join Date
    Apr 2002
    Posts
    113

    Default Re: Stroker

    I have a used offset ground buick crank with 2" rod journal, .010 under mains with Carrillo rods for sale. I believe the rods are 6.8" long. It's internally balanced. Email me directly if you want further information.

  18. #18
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    Feb 2002
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    chardon,ohio
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    Default Re: Stroker

    Quote Originally Posted by skylarkman13 View Post
    If you offset grind you crank to make it a 494 what rod would you use? Thanks Gary
    Its a csb,and for steel I'd use crower,for al. I use Bill Miller.You'll need custom pistons and rods for pin placement on the piston and rod length,I like to use long rods,better rod angle and the piston is at TDC slightly longer.
    gary
    gary
    Iron Stage 2
    GSCA #51
    BPG #1135
    To grow old is mandatory,
    To grow up is optional.
    "CARPE DIEM"

    69 GS400 4 speed documented Stage2,original owner,18k miles
    68 GS400 Stage2 race car "Great Scat" 9.94 best et
    69 GS400 4 speed convertible
    70 Q-Q GSX ( actually Sandy's) pure stock trim,12.78 best et
    70 Race car, "Thumper"resurrected 9.88 et so far.
    71 GS 455 10 second street car, triple black

  19. #19
    Join Date
    Apr 2002
    Posts
    113

    Default Re: Stroker

    Guess I should give you my email address:
    bruce@finelinemolds.com

  20. #20
    Join Date
    Jul 2004
    Location
    Central New York
    Posts
    1,859

    Default Re: Stroker

    If you are building a new engine and need new rods and pistons anyway, are there any good reasons not to stroke? I realize that coin spent on heads is of utmost importance, but if you alreay have that, wouldn't a few hundred dollars spent on a 482 or 494 be worth some "easy" power numbers?

    Anything wrong with a local competent machine shop offset grinding a good crank, and purchasing some bolt-in aluminum rods and JE pistons from TA?
    Bob

    '72 GS350 convertible, 455, "TORQUED" 11.37 @117, 1.57
    '70 GSX Tribute 9.51 @140+, 1.33, 3650 lbs race weight, factory iron block, 1 carb, full exhaust, no power adders
    '87 GN 59K original owner

    http://www.youtube.com/watch?v=hyXRjiO-oFE

  21. #21
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    Feb 2002
    Location
    chardon,ohio
    Posts
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    Default Re: Stroker

    Quote Originally Posted by TORQUED455 View Post
    If you are building a new engine and need new rods and pistons anyway, are there any good reasons not to stroke? I realize that coin spent on heads is of utmost importance, but if you alreay have that, wouldn't a few hundred dollars spent on a 482 or 494 be worth some "easy" power numbers?

    Anything wrong with a local competent machine shop offset grinding a good crank, and purchasing some bolt-in aluminum rods and JE pistons from TA?
    Not at all,I always girdle it when I stroke though.Jim Burek has done some strokers using the poston girdled pan w/o a normal girdle.
    gary
    gary
    Iron Stage 2
    GSCA #51
    BPG #1135
    To grow old is mandatory,
    To grow up is optional.
    "CARPE DIEM"

    69 GS400 4 speed documented Stage2,original owner,18k miles
    68 GS400 Stage2 race car "Great Scat" 9.94 best et
    69 GS400 4 speed convertible
    70 Q-Q GSX ( actually Sandy's) pure stock trim,12.78 best et
    70 Race car, "Thumper"resurrected 9.88 et so far.
    71 GS 455 10 second street car, triple black

  22. #22
    Join Date
    Feb 2002
    Location
    NYC
    Posts
    5,797

    Default Re: Stroker

    I`m not using a girdle either just the stock oil pan too.

    Thanks
    George



    "If ur going to beat a Hemi you better have a Buick"

  23. #23
    Join Date
    Sep 2004
    Posts
    410

    Default Re: Stroker

    The only down side is the rods you use for a 494 are $1500 and you can get standard 455 ones for about half that. Gary

  24. #24
    Join Date
    Jul 2004
    Location
    Central New York
    Posts
    1,859

    Default Re: Stroker

    Not so at all -- TA 1631 billet al standard lenght $995; TA 1631A 494 stroker billet al $995.
    Bob

    '72 GS350 convertible, 455, "TORQUED" 11.37 @117, 1.57
    '70 GSX Tribute 9.51 @140+, 1.33, 3650 lbs race weight, factory iron block, 1 carb, full exhaust, no power adders
    '87 GN 59K original owner

    http://www.youtube.com/watch?v=hyXRjiO-oFE

  25. #25
    Join Date
    Dec 2003
    Location
    CORAM,NY
    Posts
    638

    Default Re: Stroker

    Quote Originally Posted by staged67gspwr View Post
    I`m not using a girdle either just the stock oil pan too.

    Thanks
    george are you running aluminum rods ?
    MIKE

 

 
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