Closed Thread
Results 1 to 12 of 12

Reload Thread: WTH is a 2bolt & 4bolt main?

  1. #1
    psycho72's Avatar
    psycho72 is offline Senior VIP Member



    Join Date
    Dec 2004
    Location
    Los Angeles
    Posts
    489
    Post Thanks / Like
    Mentioned
    0 Post(s)

    WTH is a 2bolt & 4bolt main?

    Just like the title says, what is this. Got any pics? What is the diff? I was told 4 is better. Is this true? Can I convert a 2 into a 4?







  2. #2
    cheeseburger35's Avatar
    cheeseburger35 is offline CarAudio.com Elite



    Join Date
    Dec 2004
    Location
    Okc, Ok
    Posts
    1,320
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    the bolts refer to your main caps... some main caps use 4 bolts some use 2 bolts to attach to the block.... the 4 bolts are stronger.. and if you intend to build a motor that will have some power get a 4 bolt main block...



    Bought From: JAZN, EFFENDI, HCCAFAN, SurgicaL,djman37, MSSOKC(2), Mr. Loki, skeptikal, streetbeater07, blaze383, fatboyracing, stl_style
    Sold to: HOAX_1(2), gtpzach51, JaysonR, Justinh722, n8skow, Mast240,ampjunkielikeme
    soundpressure= Louisiana_CRX, mechanicpunk, Williambrea, WilsonDD, ultimateauto, j225, DD Scion,
    this guy *****: BulldogSr04
    06 dodge ram- dbl din, ditched the L5's now working on a fiberglass box under the rear seat for a 9510
    02 celica- total kicker build in progress rs comps, 4 zx amps, 2 12" L7's - sold

  3. #3
    Polecat's Avatar
    Polecat is offline Team Kicker Manager



    Join Date
    Apr 2004
    Location
    Stillwater, OK
    Posts
    5,244
    Post Thanks / Like
    Images
    6
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    true...unless it's a 400 SBC, then a 2 bolt is better....but for most street performance, any 2 bolt will suffice.



    In Memory of Greg Welch

    Team Kicker
    Kinetik Juiced


    Behind every great man....is an underwear tag!


    Don't argue with an idiot; people watching may not be able to tell the difference.



  4. #4
    psycho72's Avatar
    psycho72 is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2004
    Location
    Los Angeles
    Posts
    489
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    I am asking is because I am getting a caprice with the LT-1, only problem is the caprice LT-1 is a 2 bolt main. So my alternatives are be happy with a max 400 horse beater (I read that a 2 bolt is good for a max of 400 ponies), swap engines or ???? Oh and all of this is on Fantasy Island right now. I am gonna get the car real soon but won't have money to dump into it for a while because I am dumping all my current funds into the stereo, rims and a drop.




  5. #5
    Acidburn's Avatar
    Acidburn is offline Super Mod-like-guy



    Join Date
    Dec 2003
    Location
    Tempe, AZ
    Age
    27
    Posts
    15,596
    Post Thanks / Like
    Images
    22
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    Quote Originally Posted by psycho72
    I am asking is because I am getting a caprice with the LT-1, only problem is the caprice LT-1 is a 2 bolt main. So my alternatives are be happy with a max 400 horse beater, swap engines or ???? Oh and all of this is on Fantasy Island right now. I am gonna get the car real soon but won't have money to dump into it for a while because I am dumping all my current funds into the stereo, rims and a drop.
    even a 400hp B-body will be smoking fast, and i know people with over 400hp on Impalas so i dont think it makes that big of a difference



    MdOiDcEtRaAtToOrR
    1996 Chevrolet Impala SS 14.5 @ 94
    1967 Chevrolet Camaro 18.4 @ 74

  6. #6
    Join Date
    Jan 2005
    Location
    Farmington, NM
    Age
    92
    Posts
    2,455
    Post Thanks / Like
    Mentioned
    20 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    hey polecat, doesn't 400 sb chevys only come with 2 bolt mains...
    there is an option some machine shops will do where they turn a 2 bolt( l o l ) main into a 4 bolt angled ( \\ o // ) main, which is stronger than the normal 4 bolt( ll o ll ). i think it's an rpm based upgrade mainly.



    --My truck: 2006 GMC 1500 crew cab, Kenwood DNX570HD, DLS front stage, JL JX1000.1, JL dual 8w3v3 microsub enclosure, Second Skin deadening.

    --Wife's car: 2013 Chevrolet Impala LTZ, Kenwood DNX470, GermanMAESTRO components on CT125.2, 2x AT10"s on an AT800.1, RF Deadskin deadening.

    --Work truck: 2014 GMC 2500 crew cab, Kenwood DNX470, Kenwood front stage, DD M1A on a pair of American Bass XD10s.

  7. #7
    cheeseburger35's Avatar
    cheeseburger35 is offline CarAudio.com Elite



    Join Date
    Dec 2004
    Location
    Okc, Ok
    Posts
    1,320
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    have you heard about the upgrade to a 6 bolt ?? the outside extra two go at an angle into a thicker part of the block..

    also the new gto's.. and the upcoming LS7 vettes will both have six bolt mains.. the LS7 will be a 427.. with an amazing bottom end..



    Bought From: JAZN, EFFENDI, HCCAFAN, SurgicaL,djman37, MSSOKC(2), Mr. Loki, skeptikal, streetbeater07, blaze383, fatboyracing, stl_style
    Sold to: HOAX_1(2), gtpzach51, JaysonR, Justinh722, n8skow, Mast240,ampjunkielikeme
    soundpressure= Louisiana_CRX, mechanicpunk, Williambrea, WilsonDD, ultimateauto, j225, DD Scion,
    this guy *****: BulldogSr04
    06 dodge ram- dbl din, ditched the L5's now working on a fiberglass box under the rear seat for a 9510
    02 celica- total kicker build in progress rs comps, 4 zx amps, 2 12" L7's - sold

  8. #8
    Polecat's Avatar
    Polecat is offline Team Kicker Manager



    Join Date
    Apr 2004
    Location
    Stillwater, OK
    Posts
    5,244
    Post Thanks / Like
    Images
    6
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    Quote Originally Posted by soundstreamer
    hey polecat, doesn't 400 sb chevys only come with 2 bolt mains...
    there is an option some machine shops will do where they turn a 2 bolt( l o l ) main into a 4 bolt angled ( \\ o // ) main, which is stronger than the normal 4 bolt( ll o ll ). i think it's an rpm based upgrade mainly.
    no, there were two different castings, 509's were better...there were:
    casting 3951509, came out in 70-71 and they all were 4 bolt mains, then castings 3951509, from 74-80, were two bolt, these are the years to have, then in 70-73, casting 3951511, were 4 bolt, but some from the factory outlets had some 2 bolt mains.

    My 406 I built was a 509 casting, 74-80, 2 bolt...and I had an eagle rotating assembly, crank, 6" rods, JE forged pistons, etc...11:1, dart Pro 1 aluminum heads, 1.6 Comp roller rockers, RPM inatke and Holley HP series race carb...man, I miss that engine.



    In Memory of Greg Welch

    Team Kicker
    Kinetik Juiced


    Behind every great man....is an underwear tag!


    Don't argue with an idiot; people watching may not be able to tell the difference.



  9. #9
    zane's Avatar
    zane is offline Bored.....



    Join Date
    Dec 2001
    Location
    Cedar Rapids, IA USA
    Posts
    1,887
    Post Thanks / Like
    Images
    9
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    To make this easier to grasp have a look at the following page for pictures of 2 bolt and 4 bolt mains:

    http://johnmonnin.netfirms.com/4boltPictures.html





    Webslave - www.SoundwavesCS.net


    "The man who goes alone can start today; but he who travels with another must wait till that other is ready."

    - Henry David Thoreau


  10. #10
    psycho72's Avatar
    psycho72 is offline Senior VIP Member

    Threadstarter


    Join Date
    Dec 2004
    Location
    Los Angeles
    Posts
    489
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    Looking at those pics would be of any use to simply purchase some hardcore titanium or magnesium alloy whatever bolts. I mean the concern is bolt right? Just a question, not that I will actully do it but I am curious if uber bolts would make a diff.




  11. #11
    Polecat's Avatar
    Polecat is offline Team Kicker Manager



    Join Date
    Apr 2004
    Location
    Stillwater, OK
    Posts
    5,244
    Post Thanks / Like
    Images
    6
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    Nope..not really, they are grade 8 bolts from GM, about the strongest you can get. But I wouldn't hesitate to make 450 HP on a 2 bolt main...



    In Memory of Greg Welch

    Team Kicker
    Kinetik Juiced


    Behind every great man....is an underwear tag!


    Don't argue with an idiot; people watching may not be able to tell the difference.



  12. #12
    MSSOKC's Avatar
    MSSOKC is offline CarAudio.com Elite



    Join Date
    Oct 2004
    Location
    Moore, Ok now San Antonio, Tx
    Posts
    574
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: WTH is a 2bolt & 4bolt main?

    A stock LT1 block will hold more than 400 ponies. They're good for over 500 at the wheels. I know plenty of people than ran in the 450+ range on the stock block and didn't have any issues.




Closed Thread

Similar Threads

  1. Xtatic Batcap 800 as a main battery ?
    By supa_c in forum Wiring, Electrical and Installation Help
    Replies: 0
    Last Post: 03-10-2005, 12:32 AM
  2. wth to do, im beating myself up
    By Pilgrims in forum Subwoofers
    Replies: 9
    Last Post: 02-07-2005, 09:55 PM
  3. replacing main battery
    By IshbOO in forum Wiring, Electrical and Installation Help
    Replies: 13
    Last Post: 02-06-2005, 01:17 AM
  4. Location of power amp main fuse
    By jetta2vr6 in forum Wiring, Electrical and Installation Help
    Replies: 18
    Last Post: 12-19-2002, 02:18 PM

Posting Permissions

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

1e2 Forum